CN114361369B - Transparent display substrate, display device and vehicle - Google Patents
Transparent display substrate, display device and vehicle Download PDFInfo
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- CN114361369B CN114361369B CN202210006346.7A CN202210006346A CN114361369B CN 114361369 B CN114361369 B CN 114361369B CN 202210006346 A CN202210006346 A CN 202210006346A CN 114361369 B CN114361369 B CN 114361369B
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Abstract
The embodiment of the disclosure discloses a transparent display substrate, a display device and a vehicle, and relates to the technical field of display. The transparent display substrate is provided with a plurality of device setting areas and a light transmission area positioned between two adjacent device setting areas. The transparent display substrate has opposite viewing and back surfaces. The transparent display substrate includes: and a light adjusting layer positioned on one side of the plurality of light emitting devices close to the back surface. One of the device-setting regions sets at least one light emitting device. The light ray adjusting layer is configured to receive the ambient light and/or the light emitted by the light emitting device, and adjust the interception amount of the ambient light by the light ray adjusting layer under the action of the received light. The transparent display substrate, the display device and the vehicle are used for displaying images.
Description
Technical Field
The disclosure relates to the technical field of display, in particular to a transparent display substrate, a display device and a vehicle.
Background
The transparent display device is a display device having both a display function and a see-through effect, and a user can simultaneously see an image displayed in the transparent display device and a scene behind the transparent display device.
Disclosure of Invention
An object of an embodiment of the present disclosure is to provide a transparent display substrate, a display device, and a vehicle for improving 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 having a plurality of device-disposed regions and a light-transmitting region between two adjacent device-disposed regions. The transparent display substrate has opposite viewing and back surfaces. The transparent display substrate includes: and a light adjusting layer positioned on one side of the plurality of light emitting devices close to the back surface. One of the device-setting regions sets at least one light emitting device. The light ray adjusting layer is configured to receive the ambient light and/or the light emitted by the light emitting device, and adjust the interception amount of the ambient light by the light ray adjusting layer under the action of the received light.
Therefore, according to the transparent display substrate provided by some embodiments of the present disclosure, by arranging the light adjusting layer on the side, close to the back surface, of the plurality of light emitting devices, the light adjusting layer can receive ambient light and/or light emitted by the light emitting devices, and the interception amount of the ambient light by the light adjusting layer is adjusted under the action of the ambient light and/or the light emitted by the light emitting devices, for example, the stronger the ambient light emitted by the light emitting devices, the more the ambient light is intercepted by the light adjusting layer, so that the ambient light entering the transparent display substrate can be ensured to be always maintained within a relatively lower intensity. On the one hand, under the condition that the light-emitting device is in stronger environment light for a long time, the illumination intensity of the environment light received by the light-emitting device in the transparent display substrate can be greatly reduced, the damage of the stronger environment 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 entering human eyes through the transparent display substrate can be reduced, the influence of the ambient light on the brightness of a dark picture in the 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 modulating layer comprises: and a first electrode, a first electrochromic layer and a photovoltaic semiconductor layer which are stacked. Wherein the first electrode and the photovoltaic semiconductor layer are electrically connected. The photovoltaic semiconductor layer is configured to: and 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 adjusting the reflectivity or transmittance of the first electrochromic layer under the driving of the first driving voltage.
In some embodiments, the light modulating layer further comprises: the photovoltaic power generation device comprises a first electrode, a photovoltaic power generation semiconductor layer, a second electrochromic layer and a second electrode, wherein the photovoltaic power generation semiconductor layer is arranged on one side of the first electrode, the second electrochromic layer is arranged on one side of the photovoltaic power generation semiconductor layer, and the second electrode is arranged on one side of the second electrochromic layer, which is far from the photovoltaic power generation semiconductor layer. The second electrode is electrically connected to the photovoltaic semiconductor layer. The photovoltaic 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: and adjusting the reflectivity or the transmittance of the second electrochromic layer under the driving of the second driving voltage.
In some embodiments, where one of the first and second electrochromic layers is used to adjust the reflectivity and the other is used to adjust the transmittance, one of the first and second electrochromic layers adjusts the reflectivity closer to the light emitting device than the other.
In some embodiments, the reflectivity is positively correlated with the illumination intensity of 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 modulating layer comprises a photochromic material.
In some embodiments, the orthographic projection of the plurality of light emitting devices on the plane of the transparent display substrate is located within the orthographic projection range of the light adjusting layer on the plane of the transparent display substrate.
In some embodiments, the light modulating layer includes a plurality of light modulating sub-portions, one of the light modulating sub-portions being located within one of the device placement regions. And 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 light ray adjusting layer is of a whole-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 adjusting layer is disposed between the plurality of light emitting devices and the substrate, or the light adjusting layer is disposed on a side of the substrate away from the plurality of light emitting devices.
In some embodiments, the light emitting device includes: a third electrode, a light emitting layer, and a fourth electrode, which are sequentially stacked. Wherein, in the case where the light adjustment layer is disposed between the plurality of light emitting devices and the substrate, and the light 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: the transparent display substrate according to any of the embodiments above.
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 those of the transparent display substrate provided in some embodiments described above, and will not be described herein again.
In yet another aspect, a vehicle is provided, the vehicle comprising: a vehicle body and a display device as described in some of the embodiments above. The body has a window. In the display device, the transparent display substrate is arranged in the window. In the transparent display substrate, a plurality of light emitting devices are closer to the inside of the vehicle body than the light adjusting layer.
The display device provided by the vehicle according to some embodiments of the present disclosure has the same structure and beneficial effects as the display device provided in some embodiments described above, and is not described here again.
Drawings
In order to more clearly illustrate the technical solutions of the present disclosure, the drawings that need 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 may be obtained according to these drawings to those of ordinary skill in the art. Furthermore, the drawings in the following description may be regarded as schematic representations, not as limiting the actual dimensions of the products according to the embodiments of the present disclosure.
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 according to 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 cross-sectional view according to the A-A' direction in FIG. 2;
FIG. 5 is another schematic cross-sectional view in accordance with the direction A-A' in FIG. 2;
FIG. 6 is a graph of the relationship between illumination intensity of ambient light and transmittance of a light modulating layer according to one embodiment of the present disclosure;
FIG. 7 is a further schematic cross-sectional view according to the direction A-A' in FIG. 2;
FIG. 8 is a further schematic cross-sectional view according to the direction A-A' in FIG. 2;
FIG. 9 is a further schematic cross-sectional view according to the direction A-A' in 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 according to some embodiments of the present disclosure;
fig. 13 is a block diagram of a vehicle according to some embodiments of the present disclosure.
Detailed Description
The following description of the embodiments of the present disclosure will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by one of ordinary skill in the art based on the embodiments provided by the present disclosure are within the scope of the present disclosure.
Throughout the specification and claims, the term "comprising" is to be interpreted as an open, inclusive meaning, i.e. "comprising, but not limited to, unless the context requires otherwise. In the description of the present specification, the terms "one embodiment," "some embodiments," "example embodiments," "examples," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The terms "first" and "second" are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present disclosure, unless otherwise indicated, the meaning of "a plurality" is two or more.
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 disclosure herein.
"A and/or B" includes the following three combinations: only a, only B, and combinations of a and B.
The use of "adapted" or "configured to" herein is meant to be an open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.
In addition, the use of "based on" is intended to be open and inclusive in that a process, step, calculation, or other action "based on" one or more of the stated conditions or values may be based on additional conditions or beyond the stated values in practice.
Exemplary embodiments are described herein with reference to cross-sectional and/or plan views as idealized exemplary figures. In the drawings, the thickness of layers and regions are exaggerated for clarity. Thus, variations from the shape of the drawings due to, for example, 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 example embodiments.
The transparent display device is in a transparent or semi-transparent state. When the transparent display device is in an operating state, the transparent display device can display images (also called images), and a viewer can see a display picture of the transparent display device and a real scene (such as a placed object, a passing passerby and the like) on one side of the transparent display device, which is away from the viewer; when the transparent display device is in a non-working state, a viewer can see the real scene at the other side through the transparent display device.
Because the transparent display device is in a transparent or semitransparent state as a whole, 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 in the transparent display device is directly irradiated by the ambient light. In the case of a light emitting device in a strong ambient light for a long period of 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, since the transparent display device is in an operating state, that is, when the transparent display device has a display screen, ambient light can be incident from the side of the transparent display device facing away from the viewer, pass through the transparent display device, and enter the human eye from the side facing the viewer, the brightness of a dark screen (brightness is relatively smaller) and the brightness of a bright screen (brightness is relatively larger) in the display screen become larger than in the case where no ambient light is affected, but the multiple of the difference between the brightness of the dark screen and the brightness of the bright screen of the display screen is reduced, so that the difference between the brightness of the dark screen and the bright screen is reduced, the contrast of the transparent display device is deteriorated, and the stronger the ambient light, the larger the influence on the contrast of the transparent display device.
In the related art, for example, a mode of increasing a driving voltage may be adopted to make the light emitting device emit higher brightness to increase the brightness of a bright picture, thereby increasing the contrast of a display picture, but this mode increases the power of the light emitting device and reduces the service life of the light emitting device.
In the related art, for example, a transparent display device may be provided with a structure having a liquid crystal polarizer as a core, so that the contrast of a display screen may be improved. However, this solution is generally complex, 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, a 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 opposite 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 located at a side of the plurality of light emitting devices P near the back surface. Wherein one device setting area a sets at least one light emitting device P. As shown in fig. 3, the light adjustment layer 10 is configured to receive the ambient light and/or the light emitted from the light emitting device P, and adjust the interception amount of the ambient light by the light adjustment layer 10 under the action of the received light.
The shape of the device setting area A is not limited in the present disclosure, and can be selected and set according to actual needs.
Exemplary shapes of the device placement area a include rectangular, square, circular, regular hexagonal, and the like.
For example, as shown in fig. 1, the device placement area a has a rectangular shape.
The number of light emitting devices set in one device setting area a is not limited in the present disclosure, and may be selected according to actual needs.
For example, as shown in fig. 1, only one light emitting device P is provided in one device setting area a, and the device setting areas a and the light emitting devices P are in one-to-one correspondence.
For example, one device disposition region a may also dispose a plurality of light emitting devices P.
For example, the ambient light on the observation surface side of the transparent display substrate 100 can be emitted from the back surface side of the transparent display substrate 100 through the portion of the transparent display substrate 100 located in the light transmission region B, or the ambient light on the back surface side of the transparent display substrate 100 can be emitted from the observation surface side of the transparent display substrate 100 through the portion of the transparent display substrate 100 located in the light transmission region B. Thus, no matter which side of the transparent display substrate 100 the viewer stands on, the ambient light on the other side can enter the human eyes, so that the viewer can see the picture on the opposite side through the transparent display substrate 100, thereby realizing transparent display.
Although both the viewing surface side and the back surface side of the transparent display substrate 100 may be used to display a screen, the quality of the display screen on the viewing surface side is better than that on the back surface side, and in practical applications, 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 modulating layer 10. This ensures that the ambient light entering the transparent display substrate 100 is always maintained at a relatively low intensity.
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, quantum dot light emitting device) light emitting device.
For example, in the case where the light emitting device P is not operated, the light adjusting layer 10 may receive only the irradiation of the ambient light, and at this time, the light adjusting layer 10 may adjust the interception amount of the ambient light by the light adjusting layer 10 only under the effect of the ambient light.
For example, the stronger the ambient light, the greater the amount of ambient light intercepted by the light modulating layer 10. In this way, even if the transparent display substrate 100 is in strong ambient light, the amount of the ambient light actually transmitted through the light adjusting layer 10 is relatively small because the ambient light intercepted by the light adjusting layer 10 is increased, 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 where the light emitting device P is in an operating state, the light adjusting layer 10 may receive both the ambient light and the light emitted from the light emitting device P, and at this time, the light adjusting layer 10 adjusts the interception amount of the ambient light by the light adjusting layer 10 under the action of the ambient light and the light emitted from the light emitting device P.
It will be appreciated that in the case where the ambient light is extremely weak, for example, negligible, it is considered that the light adjustment layer 10 can only receive the irradiation of the light emitted from the light emitting device P, and at this time, the light adjustment layer 10 adjusts the amount of interception of the ambient light by the light adjustment 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 greater the amount of ambient light intercepted by the light regulating layer 10. In this way, the ambient light entering the transparent display substrate 100 can be ensured to be maintained within a relatively low intensity, on one hand, damage to the light emitting device P caused by the relatively strong ambient light can be greatly reduced, and the service life of the light emitting device P can be prolonged. On the other hand, the ambient light entering the human eye through the transparent display substrate 100 may be reduced, so that the influence of the ambient light on the brightness of the dark picture in the display picture of the transparent display substrate 100 is reduced, the brightness difference between the dark picture and the bright picture is increased, and the contrast of the transparent display substrate 100 is further improved.
Thus, in the transparent display substrate 100 provided in some embodiments of the present disclosure, by disposing the light adjusting layer 10 on the side of the plurality of light emitting devices P near the back surface, the light adjusting layer 10 may receive the ambient light and/or the light emitted by the light emitting devices P, and adjust the blocking amount of the ambient light by the light adjusting layer 10 under the effect of the ambient light and/or the light emitted by the light emitting devices P, for example, the stronger the ambient light and/or the light emitted by the light emitting devices P, the more the ambient light is blocked by the light adjusting layer 10, so that the ambient light entering the transparent display substrate 100 can be ensured to be always maintained within a relatively low intensity. On the one hand, in the case that the light emitting device P is in stronger ambient light for a long time, the illumination intensity of the ambient light received by the light emitting device P in the transparent display substrate 100 can be greatly reduced, so that the damage of the stronger 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 entering the human eye through the transparent display substrate 100 can be reduced, and the influence of the ambient light on the brightness of the dark picture in the display picture of the transparent display substrate 100 can be reduced, thereby increasing the brightness difference between the dark picture and the bright picture in the display picture of the transparent display substrate 100 and improving the contrast of the transparent display substrate 100.
It should be noted that, according to the related experimental data, 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 may be prolonged, for example, the service life of the light emitting device P may be improved by more than 10% compared to the case of not using the light modulation layer 10.
It should be noted that, the present disclosure is not limited to the manner of adjusting the blocking amount of the light adjusting layer 10 to the ambient light.
For example, the amount of ambient light intercepted by the light modulating layer 10 may be varied by varying the reflectivity of the light modulating layer 10, varying the amount of ambient light reflected as it passes through the light modulating layer 10.
As another example, the amount of ambient light intercepted by the light modulating layer 10 may also be varied by varying the transmittance of the light modulating layer 10.
Based on this, in some examples, as shown in fig. 4, the light adjusting 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 photovoltaic semiconductor layer 13 are electrically connected. The photovoltaic semiconductor layer 13 is configured to: receiving ambient light and/or 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 driving of the first driving voltage V1.
Illustratively, the above-described reflectance is positively correlated with the illumination intensity of light received by the photovoltaic semiconductor layer 13. The transmittance is inversely related to the illumination intensity of the light received by the photovoltaic semiconductor layer 13.
For example, the greater the illumination intensity of the light received by the photovoltaic semiconductor layer 13, the greater the reflectance of the light modulation layer 10, the greater the amount by which the ambient light is reflected while passing through the light modulation layer 10, and the greater the amount of interception of the ambient light by the light modulation layer 10, and thus the smaller the amount by which the ambient light actually passes through the light modulation layer 10.
For example, the greater the illumination intensity of the light received by the photovoltaic semiconductor layer 13, the smaller the transmittance of the light adjusting layer 10, and the greater the amount of interception of ambient light by the light adjusting layer 10, and the smaller the amount of ambient light actually passing through the light adjusting layer 10.
In either way, it is ensured that the ambient light entering the transparent display substrate 100 is always maintained at a relatively low intensity.
The electrical connection manner of the first electrode 11 and the photovoltaic semiconductor layer 13 is not limited in the present disclosure, and may be selected and set according to actual needs.
For example, the first electrode 11 and the photovoltaic semiconductor layer 13 may be directly electrically connected. In this way, after the photo-electric power generation semiconductor layer 13 receives light, the electron-hole pair of the photo-electric power generation semiconductor layer 13 is disconnected under the action of the received light, and photo-generated electrons are excited and can be directly transmitted to the first electrode 11, so that the first driving voltage V1 is formed between the photo-electric power generation 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 photovoltaic semiconductor layer 13. The first electrode 11 and the photovoltaic semiconductor layer 13 can thus be indirectly electrically connected through the first connection line 14. At this time, after receiving the light, the photo-generated electrons may be transferred to the first electrode 11 along the first connection line 14, thereby forming the first driving voltage V1 between the photo-generated semiconductor layer 13 and the first electrode 11.
Illustratively, the illumination intensity of the light received by the photovoltaic semiconductor layer 13 is positively correlated with the first driving voltage V1. That is, the larger the illumination intensity of the light received by the photovoltaic semiconductor layer 13, the more photo-generated electrons are excited, and the larger the first driving voltage V1 formed between the photovoltaic semiconductor layer 13 and the first electrode 11.
Illustratively, the first electrochromic layer 12 may adjust the reflectivity of the first electrochromic layer 12 under the driving of the first driving voltage V1.
Since the light adjusting layer 10 includes the first electrode 11, the first electrochromic layer 12 and the photovoltaic power generation semiconductor layer 13 which are stacked, the photovoltaic power generation semiconductor layer 13 can receive the ambient light and/or the light emitted by the light emitting device P, the first driving voltage V1 is generated under the effect of the received light, and the reflectance of the first electrochromic layer 12 is adjusted by the first electrochromic layer 12 under the driving of the first driving voltage V1, the interception amount of the ambient light by the first electrochromic layer 12 can be adjusted, so that the interception amount of the ambient light by the light adjusting layer 10 is adjusted, and the ambient light entering the transparent display substrate 100 is ensured to be 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 the light received by the photovoltaic semiconductor layer 13 and the first driving voltage V1 are positively correlated, a positive correlation of the reflectance of the first electrochromic layer 12 and the illumination intensity of the light received by the photovoltaic semiconductor layer 13 can be achieved.
Illustratively, the first electrochromic layer 12 may adjust the transmittance of the first electrochromic layer 12 under the driving of the first driving voltage V1.
Since the light adjusting layer 10 includes the first electrode 11, the first electrochromic layer 12 and the photovoltaic power generation semiconductor layer 13 which are stacked, the photovoltaic power generation semiconductor layer 13 can receive the ambient light and/or the light emitted by the light emitting device P, the first driving voltage V1 is generated under the effect of the received light, and the transmittance of the first electrochromic layer 12 is adjusted by the first electrochromic layer 12 under the driving of the first driving voltage V1, the interception amount of the first electrochromic layer 12 to the ambient light can be adjusted, so that the interception amount of the light adjusting layer 10 to the ambient light is adjusted, and the ambient light entering the transparent display substrate 100 is ensured to be always maintained within a relatively low intensity.
For example, the transmittance of the first electrochromic layer 12 is inversely related to the first driving voltage V1, so that in the case where the illumination intensity of the light received by the photovoltaic semiconductor layer 13 is inversely related to the first driving voltage V1, it is possible to achieve the negative correlation of the transmittance of the first electrochromic layer 12 and the illumination intensity of the light received by the photovoltaic semiconductor layer 13.
In summary, when the light adjusting layer 10 adopts the structure in the above example, the light emitted by the ambient light and/or the light emitting device P can be received, and under the effect of the received light, the blocking amount of the ambient light by the first electrochromic layer 12 is adjusted by adjusting the reflectivity or the transmittance of the first electrochromic layer 12, so as to achieve the purpose of adjusting the blocking amount of the ambient light by the light adjusting layer 10, 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 adjusting layer 10 described in some embodiments, which are not described herein.
With continued reference to the above example, in other examples, the light modulating 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 photovoltaic semiconductor layer 13. The photovoltaic semiconductor layer 13 is also configured to: receiving ambient light and/or 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 reflectivity 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 driving voltage V1 and the second driving voltage V2 are substantially the same in value.
The electrical connection manner of the second electrode 16 and the photovoltaic semiconductor layer 13 is not limited in the present disclosure, and may be selectively set according to actual needs,
for example, the second electrode 16 and the photovoltaic semiconductor layer 13 may be directly electrically connected. Thus, upon receiving light, the photo-generated electrons can be directly transferred to the second electrode 16 by the photo-generated semiconductor layer 13, 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. The second electrode 16 and the photovoltaic semiconductor layer 13 may thus be indirectly electrically connected through the second connection line 17. At this time, after receiving the light, the photo-generated electrons 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 illumination intensity of the light received by the photo-electric generation semiconductor layer 13 is positively correlated with the second driving voltage V2. That is, the larger the illumination intensity of the light received by the photovoltaic semiconductor layer 13, the more photo-generated electrons are excited, and the larger the second driving voltage V2 formed between the photovoltaic semiconductor layer 13 and the second electrode 16.
It should be noted that, for other descriptions of the second electrochromic layer 15, reference may be made to the above description of the first electrochromic layer 12, which is not repeated herein.
It will be appreciated that where the light modulating layer 10 further includes a second electrochromic layer 15, the manner in which the amount of interception of ambient light by the first electrochromic layer 12 and the amount of interception of ambient light by the second electrochromic layer 15 are modulated includes a variety of situations.
Illustratively, the first electrochromic layer 12 adjusts reflectivity under the drive of the first driving voltage V1, and the second electrochromic layer 15 adjusts transmissivity under the drive of the second driving voltage V2.
Illustratively, the first electrochromic layer 12 adjusts transmittance under the driving of the first driving voltage V1, and the second electrochromic layer 15 adjusts reflectance under the driving of the second driving voltage V2.
Illustratively, the first electrochromic layer 12 adjusts reflectivity under the drive of the first driving voltage V1, and the second electrochromic layer 15 adjusts reflectivity under the drive of the second driving voltage V2.
Illustratively, the first electrochromic layer 12 adjusts transmittance under the driving of the first driving voltage V1. The second electrochromic layer 15 adjusts transmittance under the driving of the second driving voltage V2.
By providing the second electrochromic layer 15 and the second electrode 16, the light adjusting layer 10 can be made to intercept ambient light secondarily, so that the amount of interception of ambient light by the light adjusting layer 10 can be more efficiently adjusted, and the transparent display substrate 100 can be made to adapt to stronger ambient light.
In some examples, where one of the first and second electrochromic layers 12 and 15 is used to adjust the reflectance, the other is used to adjust the transmittance, one of the first and second electrochromic layers 12 and 15 is used to adjust the reflectance closer to the light emitting device P than the other.
As shown in fig. 3, the light emitting device P emits light in a plurality of directions, that is, light is emitted from both the side of the observation surface and the side of the back surface, and by making one of the first electrochromic layer 12 and the second electrochromic layer 15 for adjusting the reflectance closer to the light emitting device P than the other, the larger the light intensity of the light received by the light emitting semiconductor layer 13 is, the larger the reflectance 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 emitting efficiency of the light emitting device P entering the human eye, increasing the brightness of the display screen seen by the human eye, further contributing to increasing the brightness of the bright screen in the display screen, increasing the difference between the bright screen and the dark screen, and further increasing the contrast of the transparent display substrate 100.
In some examples, the material of the first electrode 11 and the second electrode 16 is a transparent material.
Illustratively, the transparent material may be: indium tin oxide.
In some examples, the material of the photovoltaic semiconductor layer 13 may be a photovoltaic material.
Illustratively, the photovoltaic material may include: perovskite-based photovoltaic materials, ferrite-based photovoltaic materials, and other various metal oxide-based 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 above inorganic electrochromic material may be: tungsten trioxide, vanadium pentoxide, nickel oxide, titanium dioxide, etc., the organic electrochromic materials described above may be: organic small molecule electrochromic materials, high molecule electrochromic materials, and the like.
The following is configured with the first electrochromic layer 12: driven by the first driving voltage V1, the reflectivity of the first electrochromic layer 12 is adjusted, and the second electrochromic layer 15 is configured to: the transmittance of the second electrochromic layer 15 is adjusted by 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 is, for example, specifically describing the process of adjusting the blocking amount of the ambient light by the light adjusting layer 10.
Illustratively, the first electrochromic layer 12 has a turn-on voltage V4 and the second electrochromic layer 15 has a turn-on voltage V3, where V4 is greater than V3.
It should be noted that, instead of applying a voltage of any magnitude, the electrochromic materials used in the first electrochromic layer 12 and the second electrochromic layer 15 may change the reflectivity or transmittance, and it is necessary to provide a conducting voltage to activate the electrochromic materials, and then, when the voltage is continuously increased, the reflectivity or transmittance may change with the change of the voltage.
Since the first electrode 11 and the second electrode 16 share the photovoltaic semiconductor layer 13, the first driving voltage V1 and the second driving voltage V2 are substantially the same in value, and the first driving voltage V1 and the second driving voltage V2 are collectively referred to as a driving voltage V0 for convenience in describing the above-described adjustment process.
In this case, the transmittance of the light adjustment 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 is, the larger the reflectance of the first electrochromic layer 12 is, the smaller the transmittance of the light adjustment layer 10 is.
As shown in fig. 6, when the light emitting device P is not operated and the illumination intensity of the ambient light reaches x1 candela, the value of the driving voltage V0 excited by the photovoltaic semiconductor layer 13 is 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, as the illumination intensity of the ambient light increases, the value of the driving voltage V0 increases, the transmittance of the second electrochromic layer 15 gradually decreases, the interception amount of the ambient light by the second electrochromic layer 15 gradually increases, the amount of the ambient light actually passing through the second electrochromic layer 15 gradually decreases, and accordingly, the interception amount of the ambient light by the light adjusting layer 10 gradually increases, the amount of the ambient light actually passing through the light adjusting layer 10 gradually decreases, that is, the transmittance of the light adjusting layer 10 gradually decreases.
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 under the action of the driving voltage V0. When the illumination intensity of the ambient light is greater than x2 candela, as the illumination intensity of the ambient light increases, the value of the driving voltage V0 increases, the reflectivity of the first electrochromic layer 12 increases gradually, the interception amount of the ambient light passing through the second electrochromic layer 15 by the first electrochromic layer 12 increases gradually, and the amount of the ambient light actually passing through the first electrochromic layer 12 decreases gradually, at this time, the light adjusting layer 10 achieves secondary interception of the ambient light, and further reduces the amount of the ambient light passing through the light adjusting layer 10, that is, the transmittance of the light adjusting layer 10 decreases further.
When the light emitting device P is in an operating state, the light intensity of the light received by the photovoltaic semiconductor layer 13 increases accordingly, and the driving voltage V0 excited by the photovoltaic 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 turned on, the transmittance of the second electrochromic layer 15 can be further reduced, and thus the blocking amount of the light adjusting layer 10 to the ambient light 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 interception amount of ambient light by the light adjusting layer 10 is 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 reflectance of the first electrochromic layer 12 is increased, the light emitted from the light emitting device P along the back surface side can be reflected more by the first electrochromic layer 12 and emitted from the viewing surface side of the transparent display substrate 100, so that the light emitting 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 materials of the light modulating layer 10 include: photochromic materials.
Exemplary, photochromic materials include: organic photochromic compounds and inorganic photochromic compounds.
By photochromic materials is meant certain compounds that change their molecular structure under the action of light of a specific wavelength and intensity, resulting in a corresponding change in their absorption peak for light, which is macroscopically represented by a corresponding change in color, and which 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 a non-transparent state, that is, the transmittance of the light adjusting layer 10 decreases gradually, and the blocking amount of the ambient light by the light adjusting layer 10 increases gradually.
By making the light adjusting layer 10 from a photochromic material, the transmittance of the light adjusting layer 10 may be changed under the effect of the ambient light and/or the light emitted by the light emitting device P, for example, the stronger the illumination intensity of the light received by the light adjusting layer 10 is, the smaller the transmittance of the light adjusting layer 10 is, so as to achieve the effect of adjusting the interception amount of the ambient light by the light adjusting layer 10, thereby ensuring that the ambient light entering the transparent display substrate 100 is always maintained within a relatively low intensity, and further achieving the beneficial effects mentioned in some embodiments above, which are not repeated herein. It should be noted that, in the case where the material of the light adjustment layer 10 is a photochromic material, the structure of the light adjustment layer 10 is relatively simple, and the manufacturing process of the transparent display substrate 100 can be simplified.
The present disclosure has various choices 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 adjusting layer 10 on the plane of the transparent display substrate 100, and can be selectively set according to actual needs.
In some examples, as shown in fig. 2 and 10, the front projection of the plurality of light emitting devices P on the plane of the transparent display substrate 100 is within the front projection range of the light adjusting layer 10 on the plane of the transparent display substrate 100. This allows the light modulation layer 10 to cover at least the plurality of light emitting devices P, thereby better performing the function of the light modulation layer 10.
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 area 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 a driving signal is supplied to the corresponding light emitting device P through each pixel driving circuit to cause the light emitting device P to emit light.
For example, the front projection of the pixel driving circuit layer on the plane of the transparent display substrate 100 is located within the front projection range of the light adjusting layer 10 on the plane of the transparent display substrate 100.
As illustrated in fig. 10 and 11, the light adjustment layer 10 includes a plurality of light adjustment sub-sections 101, and one light adjustment sub-section 101 is located in one device setting area a. The front projection of a light emitting device P on the plane of the transparent display substrate 100 is located within the front projection range of a light adjusting sub-section 101 on the plane of the transparent display substrate 100.
For example, 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 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 layer constitute the light adjuster 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 adjusting sub-portion 101 can receive the ambient light and/or the light emitted by the light emitting device P, and the interception amount of the light adjusting sub-portion 101 to the ambient light is adjusted under the action of the received light, so that one light adjusting sub-portion 101 corresponds to one light emitting device P, each light adjusting sub-portion 101 can independently adjust the interception amount of the light adjusting sub-portion 101 to the ambient light, which is helpful for realizing more accurate control to the interception amount of the ambient light by the adjusting light adjusting layer 10.
For example, as shown in fig. 1 and 2, the light adjustment layer 10 is of a whole layer structure, and at this time, the light adjustment layer 10 covers the device placement area a. That is, the patterning process of the light modulation layer 10 is not required in the manufacturing process, so that the manufacturing process of the light modulation 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 mounting 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 of these film layers are of a monolithic structure. At this time, the second electrochromic layer 15 and the second electrode 16 each cover the device setting area 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 modulation layer 10 is disposed between the plurality of light emitting devices P and the substrate 20, or the light modulation layer 10 is disposed at a side of the substrate 20 remote from the plurality of light emitting devices P.
Illustratively, as shown in fig. 8, the light modulation layer 10 is disposed on a side of the substrate 20 remote from the plurality of light emitting devices P. Thus, the light adjusting layer 10 may be separately formed, and then the light adjusting layer 10 may be attached to a side of the substrate 20 remote from the light emitting device P, so that the transparent display substrate 100 may conveniently achieve the adjustment of the interception amount of the ambient light by the light adjusting layer 10.
For example, the light adjusting layer 10 may be formed by vapor deposition, and a flexible film or a glass substrate having electrochromic capability may be finally prepared.
It is understood that the vapor deposition process is a conventional technology in the art, and the process of separately preparing the light adjustment layer 10 is not complex, so that the manufacturing cost of the light adjustment layer 10 in some embodiments of the present disclosure is lower than that of the related art using a liquid crystal polarizer, and the light adjustment layer 10 may be applied to the flexible display field when the light adjustment layer 10 is prepared as a flexible film.
Illustratively, as shown in fig. 7, the light modulation layer 10 is disposed between a plurality of light emitting devices P and the substrate 20. Thus, after the formation of the substrate 20, the preparation of the light modulation layer 10 may be started, so that the preparation process of the light modulation layer 10 is mixed in the conventional preparation process flow of the 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 are stacked in this order. Wherein, in the case where the light modulation layer 10 is disposed between the plurality of light emitting devices P and the substrate 20, and the light modulation 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 is not limited to 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 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 also 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 including the transparent display substrate 100 described in any of the embodiments above.
The transparent display substrate 100 included in the display device 1000 has the same structure and beneficial effects as those of the transparent display substrate 100 provided in some embodiments described above, and will not be described herein.
In some examples, display device 1000 may be any device that displays both motion (e.g., video) and stationary (e.g., still image) and whether text or image. 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 dynamic picture experts group (Moving Picture Experts Group, 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 a camera view (e.g., a display of a rear view camera in a vehicle), an electronic photograph, an electronic billboard or sign, a building structure, packaging, and aesthetic structures (e.g., a display of an image for a piece of jewelry), and the like.
In some examples, the display device 1000 further includes: 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 provide the 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: the vehicle body 300 and the 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 adjustment layer 10.
By way of example, the vehicle 1000 may be an automobile, train, motor car, or high-speed rail device.
Illustratively, the window 310 may have the same shape and size as the transparent display substrate 100.
At this time, the transparent display substrate 100 may have a display function such as displaying an image, some external environment indexes, and the like, and thus, an occupant can see a display screen of the transparent display substrate 100 in the vehicle. In addition, since the transparent display substrate 100 has a certain transparency, the occupant can see the environment outside the transparent display substrate 100 at any time, which can increase the interest and provide the occupant with a beautiful visual feeling.
When the display device is applied to the vehicle 2000, the display device is required to be exposed to intense sunlight, and the display device in the related art cannot adjust the blocking amount of ambient light, so that the intense sunlight may raise the temperature of the vehicle body, and thus the occupant may feel uncomfortable, and the light emitting device P in the display device may be exposed to intense sunlight for a long period of time, so that the light emitting device P may be greatly damaged, and the service life of the light emitting device P may be greatly reduced. In the case of applying the display device 1000 provided in some embodiments of the present disclosure to the vehicle 2000, the amount of interception of the ambient light by the light adjusting layer 10 can be adjusted to reduce the ambient light entering the vehicle 2000, so that the temperature in the vehicle can be improved, the occupant can feel comfortable, and the light emitting device P can be prevented from being exposed to strong sunlight for a long time, so that the service life of the light emitting device P can be increased, and accordingly, the service life of the display device 1000 can be increased.
The foregoing is merely a specific embodiment of the disclosure, but the protection scope of the disclosure is not limited thereto, and any person skilled in the art who is skilled in the art will recognize that changes or substitutions are within the technical scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (10)
1. A transparent display substrate, characterized in that the transparent display substrate has a plurality of device arrangement regions and a light transmission region between two adjacent device arrangement regions; the transparent display substrate is provided with an observation surface and a back surface which are opposite; the transparent display substrate includes:
a plurality of light emitting devices; one of the device-setting regions sets at least one light-emitting device; the method comprises the steps of,
a light adjusting layer located at a side of the plurality of light emitting devices close to the rear surface;
the light ray adjusting layer is configured to receive ambient light and/or light emitted by the light emitting device, and adjust the interception amount of the light ray adjusting layer to the ambient light under the action of the received light;
the light ray adjusting layer includes: a first electrode, a first electrochromic layer and a photovoltaic semiconductor layer which are stacked; wherein the first electrode and the photovoltaic semiconductor layer are electrically connected;
The photovoltaic 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: under the drive of the first drive voltage, the reflectivity or the transmissivity of the first electrochromic layer is adjusted;
the light ray adjusting layer further includes:
a second electrochromic layer located on a side of the photovoltaic semiconductor layer away from the first electrode; the method comprises the steps of,
a second electrode located on a side of the second electrochromic layer away from the photovoltaic semiconductor layer; the second electrode is electrically connected with the photovoltaic semiconductor layer;
the photovoltaic 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: and adjusting the reflectivity or the transmittance of the second electrochromic layer under the driving of the second driving voltage.
2. The transparent display substrate according to claim 1, wherein one of the first electrochromic layer and the second electrochromic layer is closer to the light emitting device than the other is in a case where the other is used to adjust the reflectance.
3. The transparent display substrate according to claim 2, wherein the reflectance is positively correlated with an illumination intensity of 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.
4. The transparent display substrate according to claim 1, wherein the material of the light adjusting layer comprises: photochromic materials.
5. The transparent display substrate according to claim 1, wherein the orthographic projection of the plurality of light emitting devices on the plane of the transparent display substrate is located within an orthographic projection range of the light adjusting layer on the plane of the transparent display substrate.
6. The transparent display substrate according to claim 5, wherein the light adjusting layer comprises a plurality of light adjusting sub-portions; one of the light ray adjusting sub-portions is located in one of the device placement areas; the front projection of one light emitting device on the plane of the transparent display substrate is positioned in the front projection range of one light ray adjusting sub-part on the plane of the transparent display substrate; or alternatively, the first and second heat exchangers may be,
The light adjusting layer is of a whole layer structure.
7. The transparent display substrate according to any one of claims 1 to 6, wherein the transparent display substrate further comprises: a substrate;
the plurality of light emitting devices are disposed on one side of the substrate;
the light adjusting layer is arranged between the plurality of light emitting devices and the substrate; or alternatively, the first and second heat exchangers may be,
the light adjusting layer is arranged on one side of the substrate away from the plurality of light emitting devices.
8. The transparent display substrate according to claim 7, wherein,
the light emitting device includes: a third electrode, a light emitting layer, and a fourth electrode stacked in this order;
wherein the third electrode is multiplexed as the first electrode in the case where the light adjustment layer is provided between the plurality of light emitting devices and the substrate and the light adjustment layer includes the first electrode.
9. A display device, characterized in that the display device comprises: the transparent display substrate according to any one of claims 1 to 8.
10. A vehicle, characterized in that the vehicle comprises:
a vehicle body having a window; the method comprises the steps of,
the display device of claim 9;
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 adjusting layer.
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