CN114361369A

CN114361369A - Transparent display substrate, display device and vehicle

Info

Publication number: CN114361369A
Application number: CN202210006346.7A
Authority: CN
Inventors: 朱运遥; 孔超; 曹鹏; 金广; 李金钰; 张建超
Original assignee: BOE Technology Group Co Ltd; Chengdu BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Chengdu BOE Optoelectronics Technology Co Ltd
Priority date: 2022-01-05
Filing date: 2022-01-05
Publication date: 2022-04-15
Anticipated expiration: 2042-01-05
Also published as: CN114361369B

Abstract

The embodiment of the disclosure discloses a transparent display substrate, a display device and a vehicle, relates to the technical field of display, and is used for improving the contrast of the transparent display substrate. The transparent display substrate is provided with a plurality of device arrangement areas and a light transmission area positioned between two adjacent device arrangement areas. The transparent display substrate has opposing viewing and back surfaces. The transparent display substrate includes: the light-emitting device comprises a plurality of light-emitting devices and a light ray adjusting layer which is positioned on one side, close to the back surface, of the plurality of light-emitting devices. One of the device arrangement regions is provided with at least one light emitting device. The light ray adjusting layer is configured to receive ambient light and/or light emitted by the light emitting device, and the interception amount of the ambient light by the light ray adjusting layer is adjusted under the action of the received light. The transparent display substrate, the display device and the vehicle provided by the embodiment of the disclosure are used for image display.

Description

Transparent display substrate, display device and vehicle

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to a transparent display substrate, a display device, and a vehicle.

Background

The transparent display device has both a display function and a see-through effect, and a user can see an image displayed on the transparent display device and a scene behind the transparent display device at the same time.

Disclosure of Invention

An object of the disclosed embodiments is to provide a transparent display substrate, a display device and a vehicle, which are used for improving the contrast of the transparent display substrate.

In order to achieve the above purpose, the embodiments of the present disclosure provide the following technical solutions:

in one aspect, a transparent display substrate is provided, which has a plurality of device arrangement regions and a light transmission region located between two adjacent device arrangement regions. The transparent display substrate has opposing viewing and back surfaces. The transparent display substrate includes: the light-emitting device comprises a plurality of light-emitting devices and a light ray adjusting layer which is positioned on one side, close to the back surface, of the plurality of light-emitting devices. One of the device arrangement regions is provided with at least one light emitting device. The light ray adjusting layer is configured to receive ambient light and/or light emitted by the light emitting device, and the interception amount of the ambient light by the light ray adjusting layer is adjusted under the action of the received light.

Therefore, according to the transparent display substrate provided by some embodiments of the present disclosure, the light ray adjusting layer is disposed on one side of the plurality of light emitting devices close to the back side, and the light ray adjusting layer can receive the light emitted by the ambient light and/or the light emitting devices, and under the effect of the light emitted by the ambient light and/or the light emitting devices, the amount of interception of the light ray adjusting layer to the ambient light is adjusted, for example, the stronger the light emitted by the ambient light and/or the light emitting devices is, the more the ambient light intercepted by the light ray adjusting layer is, so that the ambient light entering the transparent display substrate can be always maintained in a relatively low intensity. On one hand, under the condition that the light-emitting device is in stronger ambient light for a long time, the illumination intensity of the ambient light received by the light-emitting device positioned in the transparent display substrate can be greatly reduced, the damage of the stronger ambient light to the light-emitting device is avoided, and the service life of the light-emitting device is prolonged. On the other hand, the ambient light which passes through the transparent display substrate and enters human eyes can be reduced, and the influence of the ambient light on the brightness of a dark picture in a display picture of the transparent display substrate is weakened, so that the brightness difference between the dark picture and a bright picture in the display picture of the transparent display substrate is increased, and the contrast of the transparent display substrate is improved.

In some embodiments, the light conditioning layer comprises: the first electrode, the first electrochromic layer and the photovoltaic semiconductor layer are stacked. Wherein the first electrode and the light-induced power generation semiconductor layer are electrically connected. The light-generating semiconductor layer is configured to: receiving ambient light and/or light emitted by the light-emitting device, and forming a first driving voltage between the photovoltaic semiconductor layer and the first electrode under the action of the received light. The first electrochromic layer is configured to: and under the driving of the first driving voltage, adjusting the reflectivity or the transmittance of the first electrochromic layer.

In some embodiments, the light conditioning layer further comprises: the second electrochromic layer is positioned on one side, far away from the first electrode, of the photoinduced power generation semiconductor layer, and the second electrode is positioned on one side, far away from the photoinduced power generation semiconductor layer, of the second electrochromic layer. The second electrode is electrically connected to the light-induced power generation semiconductor layer. The light-generating semiconductor layer is further configured to: receiving ambient light and/or light emitted by the light-emitting device, and forming a second driving voltage between the photovoltaic semiconductor layer and the second electrode under the action of the received light; the second electrochromic layer is configured to: adjusting the reflectance or transmittance of the second electrochromic layer under the driving of the second driving voltage.

In some embodiments, in a case where one of the first electrochromic layer and the second electrochromic layer is used to adjust the reflectance and the other is used to adjust the transmittance, one of the first electrochromic layer and the second electrochromic layer, which adjusts the reflectance, is closer to the light emitting device than the other.

In some embodiments, the reflectivity is positively correlated to the illumination intensity of the light received by the photovoltaic semiconductor layer. The transmittance is inversely related to the illumination intensity of the light received by the photovoltaic semiconductor layer.

In some embodiments, the material of the light regulating layer comprises a photochromic material.

In some embodiments, an orthographic projection of the plurality of light emitting devices on the plane of the transparent display substrate is within an orthographic projection range of the light ray adjusting layer on the plane of the transparent display substrate.

In some embodiments, the light regulating layer includes a plurality of light regulating subsections, one of the light regulating subsections being located within one of the device mounting regions. The orthographic projection of one light-emitting device on the plane of the transparent display substrate is positioned in the orthographic projection range of one light ray adjusting sub-part on the plane of the transparent display substrate, or the light ray adjusting layer is of an integral layer structure.

In some embodiments, the transparent display substrate further comprises: a substrate. The plurality of light emitting devices are disposed at one side of the substrate. The light ray adjusting layer is arranged between the plurality of light emitting devices and the substrate, or the light ray adjusting layer is arranged on one side of the substrate far away from the plurality of light emitting devices.

In some embodiments, the light emitting device comprises: a third electrode, a light-emitting layer, and a fourth electrode stacked in this order. Wherein, in a case where the light ray adjustment layer is provided between the plurality of light emitting devices and the substrate and the light ray adjustment layer includes a first electrode, the third electrode is multiplexed as the first electrode.

In another aspect, there is provided a display device including: a transparent display substrate as described in any one of the previous embodiments.

The transparent display substrate included in the display device provided in some embodiments of the present disclosure has the same structure and beneficial effects as the transparent display substrate provided in some embodiments described above, and details are not repeated here.

In yet another aspect, a vehicle is provided, the vehicle comprising: a vehicle body and a display device as described in some embodiments above. The vehicle body has a window. In the display device, a transparent display substrate is disposed in the window. In the transparent display substrate, a plurality of light emitting devices are closer to the inside of the vehicle body than a light ray adjustment layer.

The display device included in the vehicle provided in some embodiments of the present disclosure has the same structure and beneficial effects as the display device provided in some embodiments described above, and details are not repeated here.

Drawings

In order to more clearly illustrate the technical solutions in the present disclosure, the drawings needed to be used in some embodiments of the present disclosure will be briefly described below, and it is apparent that the drawings in the following description are only drawings of some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art according to the drawings. Furthermore, the drawings in the following description may be regarded as schematic and are not intended to limit the actual size of products to which embodiments of the disclosure relate.

FIG. 1 is a block diagram of a transparent display substrate according to some embodiments of the present disclosure;

FIG. 2 is a block diagram of another transparent display substrate in accordance with some embodiments of the present disclosure;

FIG. 3 is a schematic diagram of a transparent display substrate according to some embodiments of the present disclosure;

FIG. 4 is a schematic sectional view taken along line A-A' of FIG. 2;

FIG. 5 is another schematic cross-sectional view taken along line A-A' of FIG. 2;

FIG. 6 is a graph of the relationship between the luminous intensity of ambient light and the transmittance of a light conditioning layer in accordance with some embodiments of the present disclosure;

FIG. 7 is a schematic cross-sectional view taken along line A-A' of FIG. 2;

FIG. 8 is a schematic cross-sectional view taken along line A-A' of FIG. 2;

FIG. 9 is a schematic cross-sectional view taken along line A-A' of FIG. 2;

FIG. 10 is a block diagram of yet another transparent display substrate in accordance with some embodiments of the present disclosure;

FIG. 11 is a schematic cross-sectional view taken along line B-B' of FIG. 10;

FIG. 12 is a block diagram of a display device in accordance with some embodiments of the present disclosure;

FIG. 13 is a block diagram of a vehicle in accordance with some embodiments of the present disclosure.

Detailed Description

Technical solutions in some embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided by the present disclosure belong to the protection scope of the present disclosure.

Throughout the specification and claims, the term "comprising" is to be interpreted in an open, inclusive sense, i.e., as "including, but not limited to," unless the context requires otherwise. In the description herein, the terms "one embodiment," "some embodiments," "an example embodiment," "an example" or "some examples" or the like are intended to indicate that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the disclosure. The schematic representations of the above terms are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be included in any suitable manner in any one or more embodiments or examples.

In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present disclosure, "a plurality" means two or more unless otherwise specified.

In describing some embodiments, the expression "connected" and its derivatives may be used. For example, the term "connected" may be used in describing some embodiments to indicate that two or more elements are in direct physical or electrical contact with each other. The embodiments disclosed herein are not necessarily limited to the contents herein.

"A and/or B" includes the following three combinations: a alone, B alone, and a combination of A and B.

The use of "adapted to" or "configured to" herein is meant to be an open and inclusive language that does not exclude devices adapted to or configured to perform additional tasks or steps.

Additionally, the use of "based on" means open and inclusive, as a process, step, calculation, or other action that is "based on" one or more stated conditions or values may in practice be based on additional conditions or values beyond those stated.

Example embodiments are described herein with reference to cross-sectional and/or plan views as idealized example figures. In the drawings, the thickness of layers and regions are exaggerated for clarity. Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, the exemplary embodiments should not be construed as limited to the shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of the exemplary embodiments.

The transparent display device is in a transparent or translucent state. When the transparent display device is in an operating state, images (also called images) can be displayed, and a viewer can see a display picture of the transparent display device and a real scene (such as a placed object, a passerby and the like) on one side of the transparent display device, which is far away from the viewer; when the transparent display device is in a non-working state, a viewer can see the real scene on the other side through the transparent display device.

Since the transparent display device is entirely in a transparent or translucent state, on one hand, ambient light can be incident into the transparent display device from any side of the transparent display device, so that the light-emitting device located in the transparent display device is directly irradiated by the ambient light. Under the condition that the light-emitting device is under strong ambient light for a long time, the strong ambient light greatly damages the light-emitting device, thereby seriously affecting the service life of the light-emitting device.

On the other hand, when the transparent display device is in an operating state, that is, when the transparent display device has a display screen, ambient light can enter from a side of the transparent display device away from the viewer, pass through the transparent display device, and enter human eyes from a side facing the viewer, so that compared with a case without the influence of the ambient light, the luminance of a dark picture (with relatively small luminance) and the luminance of a bright picture (with relatively large luminance) in the display screen become larger, but the multiple of the difference between the luminance of the dark picture and the luminance of the bright picture in the display screen is reduced, so that the luminance difference between the dark picture and the bright picture is reduced, the contrast of the transparent display device is deteriorated, and the stronger the ambient light has a larger influence on the contrast of the transparent display device.

In the related art, for example, the driving voltage may be increased to make the light emitting device emit higher brightness to increase the brightness of a bright picture, thereby increasing the contrast of a displayed picture.

In the related art, for example, a transparent display device may be provided with a structure having a liquid crystal polarizing plate as a core to improve the contrast of a display screen. However, such a technical solution is generally complicated, costly and the preparation process is not mature enough.

Based on this, some embodiments of the present disclosure provide a transparent display substrate, as shown in fig. 1, the transparent display substrate 100 has a plurality of device arrangement regions a and a light transmission region B between two adjacent device arrangement regions. The transparent display substrate 100 has opposing viewing and back surfaces. As shown in fig. 1 and 2, the transparent display substrate 100 includes: a plurality of light emitting devices P, and a light adjusting layer 10 on a side of the plurality of light emitting devices P near the back surface. Wherein one device arrangement region a is provided with at least one light emitting device P. As shown in fig. 3, the light regulating layer 10 is configured to receive ambient light and/or light emitted from the light emitting device P, and regulate the amount of interception of the ambient light by the light regulating layer 10 by the received light.

The shape of the device arrangement region a is not limited in the present disclosure, and can be selectively arranged according to actual needs.

Illustratively, the shape of the device arrangement region a includes a rectangle, a square, a circle, a regular hexagon, and the like.

For example, as shown in fig. 1, the device-disposing region a has a rectangular shape.

The number of the light emitting devices disposed in one device disposing region a is not limited in the present disclosure, and may be selectively disposed according to actual needs.

Illustratively, as shown in fig. 1, only one light emitting device P is disposed in one device disposition region a, and the device disposition regions a and the light emitting devices P correspond one to one.

Illustratively, one device disposition region a may also dispose a plurality of light emitting devices P.

For example, the ambient light on the viewing surface side of the transparent display substrate 100 can be emitted from the rear surface side of the transparent display substrate 100 through the portion of the transparent display substrate 100 located in the light-transmitting region B, or the ambient light on the rear surface side of the transparent display substrate 100 can be emitted from the viewing surface side of the transparent display substrate 100 through the portion of the transparent display substrate 100 located in the light-transmitting region B. In this way, no matter which side of the transparent display substrate 100 the viewer stands on, the ambient light on the other side can enter into human eyes, so that the viewer can see the picture on the opposite side through the transparent display substrate 100, thereby realizing transparent display.

Note that, both the viewing surface side and the back surface side of the transparent display substrate 100 can be used to display a screen, but the quality of the display screen on the viewing surface side is superior to that on the back surface side, and in actual use, the viewing surface side of the transparent display substrate 100 is mainly used to display a screen.

Illustratively, the stronger the ambient light and/or the light emitted by the light emitting device P, the greater the amount of ambient light intercepted by the light conditioning layer 10. This ensures that the ambient light entering the transparent display substrate 100 is always maintained at a relatively low intensity.

Illustratively, the Light Emitting device P may be, for example, an OLED (Organic Light Emitting Diode) Light Emitting device or a QLED (Quantum Dot Light Emitting Diode) Light Emitting device.

For example, in a case where the light emitting device P does not operate, the light ray adjustment layer 10 can only receive the irradiation of the ambient light, and at this time, the light ray adjustment layer 10 only adjusts the interception amount of the ambient light by the light ray adjustment layer 10 under the action of the ambient light.

For example, the stronger the ambient light, the greater the amount of ambient light intercepted by the light conditioning layer 10. In this way, even if the transparent display substrate 100 is in strong ambient light, since the ambient light intercepted by the light ray adjusting layer 10 is increased, the amount of the ambient light actually passing through the light ray adjusting layer 10 is relatively small, so that the damage of the strong ambient light to the light emitting device P is greatly reduced, and the service life of the light emitting device P is further prolonged.

For example, in the case that the light emitting device P is in an operating state, the light ray adjusting layer 10 may receive the ambient light and the light emitted by the light emitting device P at the same time, and at this time, the light ray adjusting layer 10 adjusts the amount of interception of the ambient light by the light ray adjusting layer 10 under the action of the ambient light and the light emitted by the light emitting device P.

It is understood that in the case where the ambient light is extremely weak, for example, negligible, it is considered that the light ray adjusting layer 10 can only receive the irradiation of the light emitted from the light emitting device P, and at this time, the light ray adjusting layer 10 adjusts the interception amount of the ambient light by the light ray adjusting layer 10 only under the action of the light emitted from the light emitting device P.

For example, the stronger the sum of the illumination intensity of the ambient light and the illumination intensity of the light emitted from the light emitting device P, the more the amount of the ambient light intercepted by the light ray regulation layer 10. This ensures that the ambient light entering the transparent display substrate 100 is maintained at a relatively low intensity, which, on the one hand, greatly reduces the damage of the strong ambient light to the light emitting device P and improves the service life of the light emitting device P. On the other hand, the ambient light passing through the transparent display substrate 100 and entering human eyes can be reduced, so that the influence of the ambient light on the brightness of a dark picture in the display picture of the transparent display substrate 100 is weakened, the brightness difference between the dark picture and a bright picture is increased, and the contrast of the transparent display substrate 100 is improved.

Therefore, according to the transparent display substrate 100 provided by some embodiments of the present disclosure, by providing the light ray adjustment layer 10 on the side of the plurality of light emitting devices P close to the back surface, the light ray adjustment layer 10 can receive the ambient light and/or the light emitted by the light emitting devices P, and under the effect of the ambient light and/or the light emitted by the light emitting devices P, the amount of interception of the ambient light by the light ray adjustment layer 10 is adjusted, for example, the stronger the ambient light and/or the light emitted by the light emitting devices P is, the more the ambient light intercepted by the light ray adjustment layer 10 is, so that it can be ensured that the ambient light entering the transparent display substrate 100 is always maintained in a relatively low intensity. On the one hand, under the condition that the light emitting device P is in strong ambient light for a long time, the illumination intensity of the ambient light received by the light emitting device P located in the transparent display substrate 100 can be greatly reduced, the damage of the strong ambient light to the light emitting device P is avoided, and the service life of the light emitting device P is prolonged. On the other hand, the ambient light passing through the transparent display substrate 100 and entering human eyes can be reduced, and the influence of the ambient light on the brightness of the dark image in the display image of the transparent display substrate 100 can be weakened, so that the brightness difference between the dark image and the bright image in the display image of the transparent display substrate 100 can be increased, and the contrast of the transparent display substrate 100 can be improved.

It should be noted that, according to the related experimental data, it is shown that, in the case of using the transparent display substrate 100 provided in some embodiments of the present disclosure, the service life of the light emitting device P can be prolonged, for example, the service life of the light emitting device P can be increased by more than 10% compared with the case of not using the light ray adjusting layer 10.

It should be noted that the present disclosure is not limited to the manner of adjusting the interception amount of the ambient light by the light regulation layer 10.

For example, the amount of ambient light intercepted by the light conditioning layer 10 may be varied by varying the reflectivity of the light conditioning layer 10, varying the amount by which ambient light is reflected as it passes through the light conditioning layer 10.

As another example, the amount of ambient light intercepted by the light regulating layer 10 may also be varied by varying the transmittance of the light regulating layer 10.

Based on this, in some examples, as shown in fig. 4, the light ray adjustment layer 10 includes: the first electrode 11, the first electrochromic layer 12, and the photovoltaic semiconductor layer 13 are stacked. Wherein the first electrode 11 and the light-induced power generation semiconductor layer 13 are electrically connected. The light-generating semiconductor layer 13 is configured to: receiving the ambient light and/or the light emitted from the light emitting device P, a first driving voltage V1 is formed between the photovoltaic semiconductor layer 13 and the first electrode 11 by the received light. The first electrochromic layer 12 is configured to: the reflectance or transmittance of the first electrochromic layer 12 is adjusted under the drive of the first drive voltage V1.

Illustratively, the above-described reflectance is positively correlated with the light irradiation intensity of the light received by the photovoltaic semiconductor layer 13. The transmittance is inversely related to the light intensity of the light received by the photovoltaic semiconductor layer 13.

For example, the greater the illumination intensity of light received by the light-generating semiconductor layer 13, the greater the reflectivity of the light ray regulation layer 10, the greater the amount of ambient light reflected when passing through the light ray regulation layer 10, the greater the amount of interception of ambient light by the light ray regulation layer 10, and thus the smaller the amount of ambient light actually passing through the light ray regulation layer 10.

For example, the greater the illumination intensity of light received by the light-generating semiconductor layer 13, the smaller the transmittance of the light ray regulation layer 10, the greater the amount of interception of ambient light by the light ray regulation layer 10, and the smaller the amount of ambient light actually passing through the light ray regulation layer 10.

This ensures that the ambient light entering the transparent display substrate 100 is always maintained at a relatively low intensity, regardless of which of the above two approaches is used.

In the present disclosure, the electrical connection mode between the first electrode 11 and the photovoltaic semiconductor layer 13 is not limited, and may be selectively set according to actual needs.

Illustratively, the first electrode 11 and the light-generating semiconductor layer 13 may be directly electrically connected. Thus, when the photovoltaic semiconductor layer 13 receives light, the electron-hole pairs of the photovoltaic semiconductor layer 13 are cut off by the received light, and photo-generated electrons are excited, and the photo-generated electrons can be directly transmitted to the first electrode 11, so that the first driving voltage V1 is formed between the photovoltaic semiconductor layer 13 and the first electrode 11.

Illustratively, as shown in fig. 4, the light adjusting layer 10 further includes: and a first connection line 14, one end of the first connection line 14 being electrically connected to the first electrode 11, and the other end of the first connection line 14 being electrically connected to the light-induced power generation semiconductor layer 13. So that the first electrode 11 and the light-generating semiconductor layer 13 can be indirectly electrically connected through the first connection line 14. At this time, upon the photo-generated semiconductor layer 13 receiving light, photo-generated electrons may be transferred to the first electrode 11 along the first connection line 14, thereby forming a first driving voltage V1 between the photo-generated semiconductor layer 13 and the first electrode 11.

Illustratively, the light irradiation intensity of the light received by the light-generating semiconductor layer 13 is positively correlated with the first drive voltage V1. That is, the greater the light irradiation intensity of the light received by the light-generating semiconductor layer 13, the more photo-generated electrons are excited, and thus the greater the first driving voltage V1 formed between the light-generating semiconductor layer 13 and the first electrode 11.

For example, the first electrochromic layer 12 may adjust the reflectivity of the first electrochromic layer 12 under the driving of the first driving voltage V1.

Because the light adjusting layer 10 includes the first electrode 11, the first electrochromic layer 12 and the photovoltaic semiconductor layer 13, which are stacked, and the photovoltaic semiconductor layer 13 can receive ambient light and/or light emitted by the light emitting device P, and generate the first driving voltage V1 under the action of the received light, the reflectance of the first electrochromic layer 12 is adjusted by driving the first electrochromic layer 12 under the first driving voltage V1, so that the amount of interception of the first electrochromic layer 12 to the ambient light can be adjusted, thereby adjusting the amount of interception of the light adjusting layer 10 to the ambient light, and further ensuring that the ambient light entering the transparent display substrate 100 is always maintained in a relatively low intensity.

For example, the reflectance of the first electrochromic layer 12 and the first driving voltage V1 are positively correlated, so that in the case where the illumination intensity of light received by the photovoltaic semiconductor layer 13 and the first driving voltage V1 are positively correlated, it is possible to achieve positive correlation between the reflectance of the first electrochromic layer 12 and the illumination intensity of light received by the photovoltaic semiconductor layer 13.

For example, the first electrochromic layer 12 may adjust the transmittance of the first electrochromic layer 12 under the driving of the first driving voltage V1.

Because the light adjusting layer 10 includes the first electrode 11, the first electrochromic layer 12 and the photovoltaic semiconductor layer 13 which are stacked, the photovoltaic semiconductor layer 13 can receive ambient light and/or light emitted by the light emitting device P, and generate a first driving voltage V1 under the action of the received light, the transmittance of the first electrochromic layer 12 is adjusted by driving the first electrochromic layer 12 under the first driving voltage V1, so that the amount of interception of the first electrochromic layer 12 to the ambient light can be adjusted, thereby adjusting the amount of interception of the light adjusting layer 10 to the ambient light, and further ensuring that the ambient light entering the transparent display substrate 100 is always maintained in a relatively low intensity.

For example, the transmittance of the first electrochromic layer 12 and the first drive voltage V1 are inversely correlated, so that when the light intensity of the light received by the photovoltaic semiconductor layer 13 is positively correlated with the first drive voltage V1, the transmittance of the first electrochromic layer 12 and the light intensity of the light received by the photovoltaic semiconductor layer 13 are inversely correlated.

In summary, when the light ray adjusting layer 10 adopts the structure in the above example, the light ray adjusting layer 10 can receive the ambient light and/or the light emitted by the light emitting device P, and the amount of interception of the ambient light by the first electrochromic layer 12 is adjusted by adjusting the reflectivity or transmittance of the first electrochromic layer 12 under the effect of the received light, so as to adjust the amount of interception of the light ray adjusting layer 10 to the ambient light, and further ensure that the ambient light entering the transparent display substrate 100 is always maintained within a relatively low intensity, so as to achieve the beneficial effects of the light ray adjusting layer 10 described in some embodiments, which is not described herein again.

Continuing to refer to the structure of the light adjusting layer 10 in the previous example, in other examples, as shown in fig. 5, the light adjusting layer 10 further includes: a second electrochromic layer 15 on the side of the photovoltaic semiconductor layer 13 remote from the first electrode 11, and a second electrode 16 on the side of the second electrochromic layer 15 remote from the photovoltaic semiconductor layer 13. The second electrode 16 is connected to the light-generating semiconductor layer 13. The light-generating semiconductor layer 13 is further configured to: receiving the ambient light and/or the light emitted from the light emitting device, a second driving voltage V2 is formed between the photovoltaic semiconductor layer 13 and the second electrode 16 by the received light. The second electrochromic layer 15 is configured to: the reflectance or transmittance of the second electrochromic layer 15 is adjusted under the driving of the second driving voltage V2.

Since the first electrode 11 and the second electrode 16 share the photovoltaic semiconductor layer 13, the first drive voltage V1 and the second drive voltage V2 are substantially the same in value.

The electrical connection mode of the second electrode 16 and the photovoltaic semiconductor layer 13 is not limited in the present disclosure, and can be selectively set according to actual needs,

illustratively, the second electrode 16 and the light-generating semiconductor layer 13 may be directly electrically connected. Thus, upon receiving light, the photo-generated electrons of the photo-generated semiconductor layer 13 can be directly transferred to the second electrode 16, thereby forming a second driving voltage V2 between the photo-generated semiconductor layer 13 and the second electrode 16.

Illustratively, as shown in fig. 5, the light adjusting layer 10 further includes: and a second connection line 17, one end of the second connection line 17 being electrically connected to the second electrode 16, and the other end of the second connection line 17 being electrically connected to the photovoltaic semiconductor layer 13. So that the second electrode 16 and the light-generating semiconductor layer 13 can be indirectly electrically connected through the second connection line 17. At this time, upon receiving the light, the photo-generated electrons of the photo-generated semiconductor layer 13 may be transferred to the second electrode 16 along the second connection line 17, thereby forming the second driving voltage V2 between the photo-generated semiconductor layer 13 and the second electrode 16.

Illustratively, the light irradiation intensity of the light received by the light-generating semiconductor layer 13 is positively correlated with the second drive voltage V2. That is, the greater the light irradiation intensity of the light received by the light-generating semiconductor layer 13, the more photo-generated electrons are excited, and thus the greater the second driving voltage V2 formed between the light-generating semiconductor layer 13 and the second electrode 16.

It should be noted that other descriptions of the second electrochromic layer 15 may refer to the above description of the first electrochromic layer 12, and are not repeated here.

It is to be understood that in the case where the light ray adjustment layer 10 further includes the second electrochromic layer 15, the manner of adjusting the amount of interception of the ambient light by the first electrochromic layer 12 and the amount of interception of the ambient light by the second electrochromic layer 15 includes various cases.

Illustratively, the first electrochromic layer 12 adjusts the reflectivity under the driving of the first driving voltage V1, and the second electrochromic layer 15 adjusts the transmittance under the driving of the second driving voltage V2.

Illustratively, the first electrochromic layer 12 adjusts transmittance upon actuation of a first actuation voltage V1, and the second electrochromic layer 15 adjusts reflectance upon actuation of a second actuation voltage V2.

Illustratively, the first electrochromic layer 12 adjusts the reflectivity under the driving of the first driving voltage V1, and the second electrochromic layer 15 adjusts the reflectivity under the driving of the second driving voltage V2.

Illustratively, the first electrochromic layer 12 adjusts the transmittance under the driving of the first driving voltage V1. The second electrochromic layer 15 adjusts the transmittance under the driving of the second driving voltage V2.

By providing the second electrochromic layer 15 and the second electrode 16, the light ray adjusting layer 10 can intercept the ambient light for the second time, so that the amount of the ambient light intercepted by the light ray adjusting layer 10 can be adjusted more efficiently, and the transparent display substrate 100 can adapt to stronger ambient light.

In some examples, in the case where one of the first electrochromic layer 12 and the second electrochromic layer 15 is used to adjust the reflectance and the other is used to adjust the transmittance, one of the first electrochromic layer 12 and the second electrochromic layer 15, which is used to adjust the reflectance, is closer to the light emitting device P than the other.

It should be noted that, as shown in fig. 3, when the light emitting device P emits light, the light is emitted in multiple directions, that is, the light is emitted from both the side of the observation surface and the side of the back surface, one of the first electrochromic layer 12 and the second electrochromic layer 15 for adjusting the reflectivity is closer to the light emitting device P than the other, and in the case that the reflectivity is positively correlated to the illumination intensity of the light received by the photovoltaic semiconductor layer 13, the greater the illumination intensity of the light received by the photovoltaic semiconductor layer 13 is, the greater the reflectivity is, so that the light emitted from the light emitting device P along the side of the back surface can be reflected to the side of the observation surface, thereby increasing the light emitted from the light emitting device P entering human eyes, that is, the light emitting efficiency of the light emitting device P can be increased, the brightness of the display screen seen by human eyes can be increased, and the brightness of the bright screen in the display screen can be further improved, the difference between the bright picture and the dark picture is increased, and the contrast of the transparent display substrate 100 is further improved.

In some examples, the material of the first electrode 11 and the second electrode 16 is a transparent material.

For example, the transparent material may be: indium tin oxide.

In some examples, the material of the light-generating semiconductor layer 13 may be a photovoltaic material.

Illustratively, the photovoltaic material may include: perovskite photovoltaic materials, ferrite photovoltaic materials, and other various metal oxide photovoltaic materials.

In some examples, the material of the first electrochromic layer 12 may be an inorganic electrochromic material or an organic electrochromic material. The material of the second electrochromic layer 15 may be an inorganic electrochromic material or an organic electrochromic material.

Illustratively, the inorganic electrochromic material may be: tungsten trioxide, vanadium pentoxide, nickel oxide, titanium dioxide and the like, and the organic electrochromic material can be: organic micromolecular electrochromic materials, polymer electrochromic materials and the like.

The following is configured with the first electrochromic layer 12: the reflectance of the first electrochromic layer 12 is adjusted under the driving of the first driving voltage V1, and the second electrochromic layer 15 is configured to: the process of adjusting the amount of interception of ambient light by the light ray adjustment layer 10 will be specifically described, taking as an example that the transmittance of the second electrochromic layer 15 is adjusted under the driving of the second driving voltage V2, and the first electrochromic layer 12 is closer to the light emitting device P than the second electrochromic layer 15.

Illustratively, the turn-on voltage of the first electrochromic layer 12 is V4, and the turn-on voltage of the second electrochromic layer 15 is V3, where V4 is greater than V3.

It should be noted that the electrochromic materials used in the first electrochromic layer 12 and the second electrochromic layer 15 may not change the reflectivity or transmittance after applying a voltage of any magnitude, but need to provide a turn-on voltage to activate the electrochromic materials, and then the reflectivity or transmittance may change with the change of the voltage when the voltage is continuously increased.

It should be noted that the first electrode 11 and the second electrode 16 share the photovoltaic semiconductor layer 13, and therefore, the first driving voltage V1 and the second driving voltage V2 are substantially identical in value, and for convenience of describing the above-described adjustment process, the first driving voltage V1 and the second driving voltage V2 are collectively referred to as a driving voltage V0 for explanation.

In this case, the transmittance of the light ray control layer 10 is determined by both the reflectance of the first electrochromic layer 12 and the transmittance of the second electrochromic layer 15, and the smaller the transmittance of the second electrochromic layer 15, the larger the reflectance of the first electrochromic layer 12, the smaller the transmittance of the light ray control layer 10.

As shown in fig. 6, when the light emitting device P does not operate and the illumination intensity of the ambient light reaches x1 candela, the driving voltage V0 excited by the photovoltaic semiconductor layer 13 has a value equal to V3, and the second electrochromic layer 15 is turned on by the driving voltage V0. When the illumination intensity of the ambient light is greater than x1 candela, the value of the driving voltage V0 increases with the increase of the illumination intensity of the ambient light, the transmittance of the second electrochromic layer 15 decreases gradually, the interception amount of the second electrochromic layer 15 to the ambient light increases gradually, the amount of the ambient light actually passing through the second electrochromic layer 15 decreases gradually, accordingly, the interception amount of the light ray adjusting layer 10 to the ambient light increases gradually, the amount of the ambient light actually passing through the light ray adjusting layer 10 decreases gradually, that is, the transmittance of the light ray adjusting layer 10 decreases gradually.

When the illumination intensity of the ambient light reaches x2 candela, the value of the driving voltage V0 excited by the photovoltaic semiconductor layer 13 is equal to V4, and the first electrochromic layer 12 is turned on by the driving voltage V0. When the illumination intensity of the ambient light is greater than x2 candela, the value of the driving voltage V0 increases with the increase of the illumination intensity of the ambient light, the reflectivity of the first electrochromic layer 12 gradually increases, the interception amount of the first electrochromic layer 12 to the ambient light passing through the second electrochromic layer 15 gradually increases, the amount of the ambient light actually passing through the first electrochromic layer 12 gradually decreases, at this time, the light ray adjusting layer 10 realizes secondary interception of the ambient light, the amount of the ambient light passing through the light ray adjusting layer 10 is further decreased, that is, the transmittance of the light ray adjusting layer 10 is further decreased.

When the light-emitting device P is in an operating state, the light intensity of the light received by the light-generating semiconductor layer 13 is increased accordingly, and the driving voltage V0 excited by the light-generating semiconductor layer 13 can be further increased. In this way, on the one hand, in the case where the second electrochromic layer 15 is already on, the transmittance of the second electrochromic layer 15 can be further reduced, and the amount of interception of ambient light by the light ray adjustment layer 10 can be further increased. On the other hand, in the case where the first electrochromic layer 12 has been turned on, the reflectance of the first electrochromic layer 12 may be further increased, so that the amount of interception of ambient light by the light ray adjusting layer 10 may be further increased.

It should be noted that, since the first electrochromic layer 12 is closer to the light emitting device P than the second electrochromic layer 15, when the reflectivity of the first electrochromic layer 12 is increased, more light emitted from the light emitting device P along the back side can be reflected by the first electrochromic layer 12 and emitted from the viewing surface side of the transparent display substrate 100, so that the light extraction efficiency of the light emitting device P is increased, the brightness of the bright screen of the transparent display substrate 100 is increased, and the contrast of the transparent display substrate 100 is further improved.

In some examples, the material of the light ray adjusting layer 10 includes: a photochromic material.

Illustratively, the photochromic material includes: organic photochromic compounds and inorganic photochromic compounds.

It should be noted that the photochromic material refers to a compound whose molecular structure changes under the action of light with specific wavelength and intensity, so as to cause the corresponding change of the absorption peak of the light, which is expressed as a corresponding change of color on the macroscopic scale, and the change is generally reversible.

For example, as the illumination intensity of the light received by the light adjusting layer 10 increases, the light adjusting layer 10 changes color from a transparent state to an opaque state, that is, the transmittance of the light adjusting layer 10 decreases gradually, and the amount of the ambient light intercepted by the light adjusting layer 10 increases gradually.

Through making light regulation layer 10 prepare by photochromic material and form, make the transmissivity of light regulation layer 10 can change under the effect of ambient light and/or the light that luminescent device P sent, for example, the illumination intensity of the light that light regulation layer 10 received is stronger, the transmissivity of light regulation layer 10 is less, can realize adjusting the interception volume of light regulation layer 10 to ambient light, thereby guarantee that the ambient light that gets into in transparent display substrate 100 maintains in a relatively lower intensity all the time, and then can realize as mentioned in some embodiments beneficial effect, the no longer repeated description here. It should be added that, in the case that the material of the light ray adjusting layer 10 is a photochromic material, the structure of the light ray adjusting layer 10 is relatively simple, and the manufacturing process of the transparent display substrate 100 can be simplified.

The present disclosure has various options for the projection relationship between the orthographic projection of the plurality of light emitting devices P on the plane of the transparent display substrate 100 and the orthographic projection of the light ray adjusting layer 10 on the plane of the transparent display substrate 100, and the arrangement can be selected according to actual needs.

In some examples, as shown in fig. 2 and 10, an orthographic projection of the plurality of light emitting devices P on the plane of the transparent display substrate 100 is located within an orthographic projection range of the light ray adjustment layer 10 on the plane of the transparent display substrate 100. This makes it possible to make the light ray regulation layer 10 cover at least a plurality of light emitting devices P, thereby achieving the function of the light ray regulation layer 10 better.

Illustratively, the transparent display substrate 100 further includes: and a pixel driving circuit layer. The pixel driving circuit layer includes a plurality of pixel driving circuits. One device setting region a sets at least one pixel driving circuit.

For example, one pixel driving circuit may be electrically connected to one light emitting device P, so that the light emitting device P emits light by supplying a driving signal to the corresponding light emitting device P through each pixel driving circuit.

For example, the orthographic projection of the pixel driving circuit layer on the plane of the transparent display substrate 100 is within the orthographic projection range of the light adjusting layer 10 on the plane of the transparent display substrate 100.

Illustratively, as shown in fig. 10 and 11, the light adjusting layer 10 includes a plurality of light adjusting subsections 101, and one light adjusting subsection 101 is located in one device installation region a. The orthographic projection of one light emitting device P on the plane of the transparent display substrate 100 is within the orthographic projection range of one light regulating sub-section 101 on the plane of the transparent display substrate 100.

For example, the light ray adjusting layer 10 includes: in the case of the first electrode 11, the first electrochromic layer 12, and the photovoltaic semiconductor layer 13 being stacked, the first electrode 11 includes a plurality of block-shaped first sub-electrodes, the first electrochromic layer 12 includes a plurality of block-shaped first sub-electrochromic layers, the photovoltaic semiconductor layer 13 includes a plurality of block-shaped sub-photovoltaic semiconductor layers, and the first sub-electrode, the first sub-electrochromic layer, and the sub-photovoltaic semiconductor layers constitute the light adjusting sub-section 101.

For example, the light adjusting layer 10 further includes: in the case of the second electrochromic layer 15 and the second electrode 16, the second electrochromic layer 15 includes a plurality of block-shaped second sub-electrochromic layers, and the second electrode 16 includes a plurality of block-shaped second sub-electrodes, and at this time, the first sub-electrode, the first sub-electrochromic layer, the sub-photovoltaic semiconductor layer, the second sub-electrochromic layer, and the second sub-electrode constitute the light adjusting sub-section 101.

In this way, each light ray adjusting sub-portion 101 can receive the ambient light and/or the light emitted by the light emitting device P, and the amount of interception of the light ray adjusting sub-portion 101 to the ambient light is adjusted under the action of the received light, so that one light ray adjusting sub-portion 101 corresponds to one light emitting device P, and each light ray adjusting sub-portion 101 can independently adjust the amount of interception of the light ray adjusting sub-portion 101 to the ambient light, which is beneficial to more accurately controlling the amount of interception of the light ray adjusting layer 10 to the ambient light.

For example, as shown in fig. 1 and fig. 2, the light adjusting layer 10 is a whole layer structure, and at this time, the light adjusting layer 10 covers the device arrangement region a. That is, in the manufacturing process, the light ray adjustment layer 10 does not need to be patterned, so that the manufacturing process of the light ray adjustment layer 10 can be simplified.

For example, as shown in fig. 4, the light adjusting layer 10 includes: in the case of the first electrode 11, the first electrochromic layer 12, and the photovoltaic semiconductor layer 13, the plurality of film layers are all of a monolithic structure. At this time, the first electrode 11, the first electrochromic layer 12, and the photovoltaic semiconductor layer 13 all cover the device arrangement region a.

For example, as shown in fig. 5, the light adjusting layer 10 further includes: in the case of the second electrochromic layer 15 and the second electrode 16, both film layers are of a monolithic structure. At this time, the second electrochromic layer 15 and the second electrode 16 both cover the device arrangement region a.

In some examples, as shown in fig. 7 and 8, the transparent display substrate 100 further includes: a substrate 20. A plurality of light emitting devices P are disposed at one side of the substrate 20. The light ray adjusting layer 10 is disposed between the plurality of light emitting devices P and the substrate 20, or the light ray adjusting layer 10 is disposed on a side of the substrate 20 away from the plurality of light emitting devices P.

Illustratively, as shown in fig. 8, the light adjusting layer 10 is disposed on a side of the substrate 20 away from the plurality of light emitting devices P. Thus, the light ray adjusting layer 10 can be separately prepared and formed, and then the light ray adjusting layer 10 is attached to the side of the substrate 20 away from the light emitting device P, so that the transparent display substrate 100 can conveniently adjust the amount of the light ray adjusting layer 10 intercepting the ambient light.

For example, the light adjusting layer 10 may be formed by evaporation, and a flexible film or a glass substrate having electrochromic capability may be finally prepared.

It is understood that the evaporation process is a conventional technique in the art, and the process of separately preparing the light ray adjustment layer 10 is not complicated, so that the light ray adjustment layer 10 in some embodiments of the present disclosure is lower in manufacturing cost compared to the related art using a liquid crystal polarizer, and can be applied to the flexible display field in the case of preparing the light ray adjustment layer 10 as a flexible film.

Illustratively, as shown in fig. 7, the light adjusting layer 10 is disposed between the plurality of light emitting devices P and the substrate 20. In this way, after the formation substrate 20 is prepared, the light ray adjustment layer 10 is prepared, and thus the preparation process of the light ray adjustment layer 10 is integrated into the preparation process flow of the conventional transparent display substrate 100.

For example, as shown in fig. 9, the light emitting device P includes: a third electrode 31, a light-emitting layer 32, and a fourth electrode 33, which are sequentially stacked. Here, in the case where the light ray adjustment layer 10 is disposed between the plurality of light emitting devices P and the substrate 20, and the light ray adjustment layer 10 includes the first electrode 11, the third electrode 31 is multiplexed as the first electrode 11. This may further simplify the manufacturing process of the transparent display substrate 100.

It should be noted that the present disclosure does not limit the type of the third electrode 31, and the third electrode 31 may be an anode or a cathode. That is, in the case where the light ray adjustment layer 10 includes the first electrode 11, the cathode of the light emitting device P of the first electrode 11 may be multiplexed as the first electrode 11, and the anode of the light emitting device P may be multiplexed as the first electrode 11.

In some embodiments, as shown in fig. 12, a display device 1000 is provided, the display device 1000 comprising the transparent display substrate 100 described in any of the above embodiments.

The transparent display substrate 100 included in the display device 1000 has the same structure and beneficial effects as the transparent display substrate 100 provided in some embodiments, and the description thereof is omitted here.

In some examples, display device 1000 may be any device that displays text or images, whether in motion (e.g., video) or stationary (e.g., still images). More particularly, it is contemplated that the embodiments may be implemented in or associated with a variety of electronic devices such as, but not limited to, one of a mobile phone, a Moving Picture Experts Group 4, MP4 for short, video player, a watch, a clock, a calculator, a television monitor, a computer monitor, an automotive display (e.g., odometer display, etc.), a navigator, a cockpit controller and/or display, a display of camera views (e.g., of a rear-view camera in a vehicle), an electronic photograph, an electronic billboard or sign, architectural structures, packaging, and aesthetic structures (e.g., a display of images for a piece of jewelry), and so forth.

In some examples, the display device 1000 further comprises: and a main board 200, wherein the main board 200 is electrically connected with the transparent display substrate 100. At this time, the main board 200 is configured to supply image data to the transparent display substrate 100, and the transparent display substrate 100 is configured to display a corresponding image based on the received image data.

In some embodiments, as shown in fig. 13, there is provided a vehicle 2000, the vehicle 2000 comprising: a vehicle body 300 and a display device 1000 as described in some embodiments above. The vehicle body 300 has a window 310, and in the display device 1000, the transparent display substrate 100 is disposed in the window 210. In the transparent display substrate 100, the plurality of light emitting devices P are located closer to the inside of the vehicle body 300 than the light ray adjustment layer 10.

The vehicle 1000 may be an automobile, a train, a motor car, a high-speed rail, or the like.

For example, the shape and size of the window 310 may be the same as those of the transparent display substrate 100.

At this time, the transparent display substrate 100 may have a display function, such as displaying an image and some external environment indexes, so that the occupant may see the display screen of the transparent display substrate 100 in the vehicle. Moreover, since the transparent display substrate 100 has a certain transparency, the rider can see the environment outside the transparent display substrate 100 at any time, which can increase the interest and bring a wonderful visual experience to the rider.

It should be noted that, when the display device is applied to the vehicle 2000, the display device needs to be exposed to strong sunlight frequently, and the display device in the related art cannot adjust the interception amount of the ambient light, so that the strong sunlight may increase the temperature of the vehicle body, and further cause discomfort to passengers, and may cause the light emitting device P in the display device to be exposed to strong sunlight for a long time, which may also greatly damage the light emitting device P, and greatly reduce the service life of the light emitting device P. When the display apparatus 1000 according to some embodiments of the present disclosure is applied to the vehicle 2000, the amount of the ambient light intercepted by the light ray adjusting layer 10 may be adjusted to reduce the ambient light entering the vehicle 2000, so as to improve the temperature inside the vehicle and make the passengers feel comfortable, and the light emitting device P may be prevented from being exposed to strong sunlight for a long time, so as to increase the service life of the light emitting device P, and accordingly increase the service life of the display apparatus 1000.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art will appreciate that changes or substitutions within the technical scope of the present disclosure are included in the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. The transparent display substrate is characterized by comprising a plurality of device arrangement areas and a light transmission area positioned between two adjacent device arrangement areas; the transparent display substrate has opposite viewing and back surfaces; the transparent display substrate includes:

a plurality of light emitting devices; one of the device arrangement regions is provided with at least one light emitting device; and the number of the first and second groups,

the light ray adjusting layer is positioned on one side, close to the back surface, of the plurality of light emitting devices;

the light ray adjusting layer is configured to receive ambient light and/or light emitted by the light emitting device, and the interception amount of the ambient light by the light ray adjusting layer is adjusted under the action of the received light.

2. The transparent display substrate of claim 1, wherein the light regulating layer comprises: a first electrode, a first electrochromic layer and a photovoltaic semiconductor layer which are arranged in a stacked manner; wherein the first electrode and the photovoltaic semiconductor layer are electrically connected;

the light-generating semiconductor layer is configured to: receiving ambient light and/or light emitted by the light-emitting device, and forming a first driving voltage between the photovoltaic semiconductor layer and the first electrode under the action of the received light;

the first electrochromic layer is configured to: and under the driving of the first driving voltage, adjusting the reflectivity or the transmittance of the first electrochromic layer.

3. The transparent display substrate of claim 2, wherein the light regulating layer further comprises:

the second electrochromic layer is positioned on one side of the photovoltaic semiconductor layer, which is far away from the first electrode; and a process for the preparation of a coating,

the second electrode is positioned on one side, away from the photovoltaic semiconductor layer, of the second electrochromic layer; the second electrode is electrically connected with the photovoltaic semiconductor layer;

the light-generating semiconductor layer is further configured to: receiving ambient light and/or light emitted by the light-emitting device, and forming a second driving voltage between the photovoltaic semiconductor layer and the second electrode under the action of the received light;

the second electrochromic layer is configured to: adjusting the reflectance or transmittance of the second electrochromic layer under the driving of the second driving voltage.

4. The transparent display substrate according to claim 3, wherein in a case where one of the first electrochromic layer and the second electrochromic layer is used to adjust the reflectance and the other is used to adjust the transmittance, one of the first electrochromic layer and the second electrochromic layer, which is used to adjust the reflectance, is closer to the light emitting device than the other.

5. The transparent display substrate according to claim 3, wherein the reflectivity is positively correlated with the illumination intensity of the light received by the photovoltaic semiconductor layer;

the transmittance is inversely related to the illumination intensity of the light received by the photovoltaic semiconductor layer.

6. The transparent display substrate of claim 1, wherein the material of the light adjusting layer comprises: a photochromic material.

7. The transparent display substrate of claim 1, wherein an orthographic projection of the plurality of light emitting devices on the plane of the transparent display substrate is within an orthographic projection range of the light adjusting layer on the plane of the transparent display substrate.

8. The transparent display substrate of claim 7, wherein the light conditioning layer comprises a plurality of light conditioning subsections; one of the light conditioning sub-sections is located in one of the device mounting areas; the orthographic projection of the light-emitting device on the plane of the transparent display substrate is positioned in the orthographic projection range of the light ray adjusting sub-part on the plane of the transparent display substrate; or the like, or, alternatively,

the light ray adjusting layer is of a whole-layer structure.

9. The transparent display substrate according to any one of claims 1 to 8, further comprising: a substrate;

the plurality of light emitting devices are disposed at one side of the substrate;

the light ray adjusting layer is arranged between the plurality of light emitting devices and the substrate; or the like, or, alternatively,

the light ray adjusting layer is arranged on one side, far away from the plurality of light emitting devices, of the substrate.

10. The transparent display substrate of claim 9,

the light emitting device includes: a third electrode, a light-emitting layer, and a fourth electrode stacked in this order;

wherein, in a case where the light ray adjustment layer is provided between the plurality of light emitting devices and the substrate and the light ray adjustment layer includes a first electrode, the third electrode is multiplexed as the first electrode.

11. A display device, characterized in that the display device comprises: the transparent display substrate according to any one of claims 1 to 10.

12. A vehicle, characterized in that the vehicle comprises:

a vehicle body having a window; and the number of the first and second groups,

the display device according to claim 11;

wherein, in the display device, a transparent display substrate is arranged in the window; in the transparent display substrate, the plurality of light emitting devices are closer to the inside of the vehicle body than the light ray adjusting layer.