Transparent display screen, electronic equipment and manufacturing method of transparent display screen

Abstract

The invention provides a transparent display screen, electronic equipment and a manufacturing method of the transparent display screen, relates to the technical field of electronic equipment, and is used for solving the problem that the display contrast of the transparent display screen is relatively low. The transparent display screen comprises a substrate, a pixel layer and a color changing layer. The pixel layer is located on the substrate and comprises a light-emitting part and a transparent part which are distributed in the first direction. The color changing layer is located on the side, away from the substrate, of the pixel layer and at least covers the transparent part. According to the transparent display screen, the color changing layer at least covers the transparent part, the problem that the contrast ratio of the transparent display screen is poor can be effectively solved, the transparency of the color changing layer can be dynamically adjusted according to the ambient light, and therefore the contrast ratio of the transparent display screen is dynamically adjusted, and the display effect of the transparent display screen is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic devices, and in particular to a transparent display screen, an electronic device, and a manufacturing method of the transparent display screen. BACKGROUND

[0002] With the development of display technology, transparent display screens have attracted much attention. A transparent display screen has a certain degree of penetration and can clearly see the background behind the transparent display screen. One problem with the transparent display screen is that external ambient light can be incident from the back of the transparent display screen and penetrate to the display surface. When the transparent display screen displays an image, if the external ambient light is strong, the display contrast is low and the display effect is poor. SUMMARY

[0003] Embodiments of the present application provide a transparent display screen, an electronic device, and a manufacturing method of the transparent display screen, to solve the problem of low display contrast of the transparent display screen.

[0004] To achieve the above object, embodiments of the present application adopt the following technical solutions:

[0005] In a first aspect, a transparent display screen is provided. The transparent display screen includes a substrate, a pixel layer, and a color-changing layer. The pixel layer is located on the substrate, and the pixel layer includes light-emitting portions and transparent portions distributed along a first direction. The color-changing layer is located on a side of the pixel layer away from the substrate, and the color-changing layer covers at least the transparent portions.

[0006] The pixel layer is used for display, so that the transparent display screen can display text or images. The light-emitting portions can emit light, and the picture is displayed by controlling the color change of the light-emitting portions. The transparent display screen can present a transparent display effect by setting the transparent portions.

[0007] The color-changing layer can change color, and the color-changing layer can switch between a color-changing state and a color-fading state. When the external ambient light is strong and the display contrast of the transparent display screen is low, the color-changing layer is in the color-changing state, so that the transparency of the color-changing layer is reduced, for example, the color-changing layer can become black, so that the ambient light cannot penetrate the color-changing layer, the contrast of the transparent display screen can be improved, and the display effect of the transparent display screen can be improved. When the external ambient light is weak and the display contrast of the transparent display screen is high, the color-changing layer is in the color-fading state, so that the transparency of the color-changing layer is increased, for example, the color-changing layer can become transparent, so that the ambient light can penetrate the color-changing layer, and the transmittance of the ambient light is improved.

[0008] In this structure, by setting the color-changing layer to cover at least the transparent portions, the problem of poor contrast of the transparent display screen can be effectively solved, and the transparency of the color-changing layer can be dynamically adjusted according to the ambient light, so that the contrast of the transparent display screen can be dynamically adjusted, and the display effect of the transparent display screen can be improved.

[0009] In a possible implementation manner of the first aspect, the transparent display screen further includes an insulating layer, the insulating layer includes a first part and a second part connected to each other, the first part covers the light-emitting part, and the second part is located on a side of the color-changing layer away from the pixel layer.

[0010] Based on this, by setting the first part and the second part, the gap between the two adjacent color-changing layers can be filled, and the surface of the color-changing layer away from the pixel layer is made more flat, thereby improving the surface flatness of the transparent display screen.

[0011] The surface of the insulating layer away from the pixel layer can be a plane. This makes the surface of the transparent display screen more flat, further improves the surface flatness of the transparent display screen, and thereby improves the display effect of the transparent display screen.

[0012] In a possible implementation manner of the first aspect, the color-changing layer covers the transparent part and the light-emitting part, so that the surface of the transparent display screen is flat, the surface flatness of the transparent display screen is improved, and thereby the display effect of the transparent display screen is improved.

[0013] In a possible implementation manner of the first aspect, the transparent display screen further includes a first light-shielding layer, the first light-shielding layer is arranged on a side of the pixel layer away from the substrate, the transparent part includes a first region and a second region distributed along a first direction, two second regions are arranged, the first region is located between the two second regions, and the first light-shielding layer covers the second region.

[0014] In this structure, by setting the first light-shielding layer to cover the second region, the ambient light cannot penetrate the first light-shielding layer, the light emitted by the light-emitting part is prevented from overlapping with the ambient light, color crosstalk is avoided at the boundary between the light-emitting part and the transparent part, the color precision of the transparent display screen is improved, and thereby the display effect of the transparent display screen is improved.

[0015] In a possible implementation manner of the first aspect, along the first direction, the size of the first light-shielding layer is greater than or equal to 1 μm and less than or equal to 15 μm.

[0016] The size of the first light-shielding layer is greater than or equal to 1 μm, which avoids the problem that the size of the first light-shielding layer is too small and boundary color crosstalk still exists. The size of the first light-shielding layer is less than or equal to 15 μm, which avoids the problem that the size of the first light-shielding layer is too large and the transparent display effect of the transparent display screen is not good when the color-changing layer is in the faded state.

[0017] In a possible implementation manner of the first aspect, the transparent display screen further includes a light filter, the light filter is arranged on a side of the pixel layer away from the substrate, and the light filter at least covers the light-emitting part.

[0018] The light filtering film can filter light and has the effect of selective light transmission. By setting the light filtering film to absorb most of the ambient light, the service life of the light emitting part can be longer.

[0019] In a possible implementation of the first aspect, the light filtering film covers the light emitting part and the first light shielding layer.

[0020] The first area, the two adjacent light filtering films, and the two first light shielding layers enclose the mounting groove, and the color changing layer is located in the mounting groove. By setting the light filtering film to cover the first light shielding layer, the size of the side wall of the mounting groove is larger, and the color changing layer can be better formed.

[0021] In a possible implementation of the first aspect, the light emitting part includes a plurality of sub-pixels distributed along a second direction, and the second direction is perpendicular to the first direction; and the transparent display screen further includes a second light shielding layer, and the second light shielding layer is located between the two adjacent sub-pixels.

[0022] Each sub-pixel can emit light of different colors. The second light shielding layer is located between the two adjacent sub-pixels, which can separate the two adjacent sub-pixels and prevent the two adjacent sub-pixels from affecting each other during display, thereby improving the color contrast of the transparent display screen and making the display effect of the transparent display screen better.

[0023] In a possible implementation of the first aspect, the transparent display screen further includes a driving unit, and the driving unit is arranged on the substrate and is electrically connected to the light emitting part. The driving unit is used to control the transparent display screen to emit light and display an image. Moreover, the driving unit can control the color changing layer to change color, so as to adjust the transparency of the color changing layer and thus adjust the display contrast of the transparent display screen.

[0024] In a possible implementation of the first aspect, the driving unit is a thin film transistor. The thin film transistor has a fast and accurate response rate, can quickly adjust the transparency of the color changing layer according to the ambient light, and consumes less power.

[0025] In a possible implementation of the first aspect, the transparent display screen further includes a first conductive layer, and the first conductive layer is arranged on a side of the color changing layer close to the substrate. The first conductive layer is electrically connected to the color changing layer and is electrically connected to the driving unit.

[0026] The driving unit can be electrically connected to the color changing layer through the first conductive layer, so as to control the color changing layer to change color and adjust the transparency of the color changing layer, thereby adjusting the display contrast of the transparent display screen.

[0027] In a possible implementation manner of the first aspect, the transparent display screen further includes a first via extending along the thickness direction of the substrate, the first via being filled with a first conductive part, and the first conductive layer being electrically connected to the driving unit through the first conductive part. The first via is used to accommodate the first conductive part, so that the structure of the transparent display screen is more compact.

[0028] In a possible implementation manner of the first aspect, the transparent display screen further includes a second conductive layer, the second conductive layer being arranged on the side of the color-changing layer away from the substrate, the second conductive layer being electrically connected to the color-changing layer, and the second conductive layer being electrically connected to the driving unit.

[0029] The driving unit can be electrically connected to the color-changing layer through the second conductive layer, so as to control the color-changing layer to change color and adjust the transparency of the color-changing layer, thereby adjusting the display contrast of the transparent display screen.

[0030] In a possible implementation manner of the first aspect, the transparent display screen further includes a second via extending along the thickness direction of the substrate, the second via being filled with a second conductive part, and the second conductive layer being electrically connected to the driving unit through the second conductive part.

[0031] The second via is used to accommodate the second conductive part, so that the structure of the transparent display screen is more compact.

[0032] In a possible implementation manner of the first aspect, the transparent display screen further includes a transition layer, the transition layer being arranged on the side of the first conductive layer close to the substrate. The transition layer is used to isolate the first conductive layer from the pixel layer, so as to avoid interference between the first conductive layer and the pixel layer.

[0033] In a possible implementation manner of the first aspect, the transparent display screen further includes an electrolyte layer, the electrolyte layer being arranged on the side of the color-changing layer away from the substrate, and the electrolyte layer being electrically connected to the driving unit. The electrolyte layer is responsible for providing and transmitting ions, and can accelerate the color-changing of the color-changing layer, so that the color-changing layer has a faster response and higher timeliness.

[0034] In a possible implementation manner of the first aspect, the transparent display screen further includes an electrolyte protection layer, the electrolyte protection layer being arranged on the side of the electrolyte layer away from the color-changing layer. The electrolyte protection layer is used to protect the electrolyte layer and prolong the service life of the electrolyte layer.

[0035] The material of the electrolyte protection layer can include silicon nitride, silicon oxide, organic resin and other insulating materials. The electrolyte protection layer can isolate air and water vapor, avoid the electrolyte layer from being in contact with air and water vapor, reduce the aging rate of the electrolyte layer, and thereby prolong the service life of the electrolyte layer.

[0036] In a possible implementation manner of the first aspect, the transparent display screen further includes an encapsulation layer, which is arranged between the pixel layer and the color-changing layer. The encapsulation layer plays a protective role. The organic material of the pixel layer is very sensitive to water vapor and oxygen and the like. Therefore, the encapsulation layer is arranged to avoid the layer from contacting water vapor and oxygen, reduce the aging rate of the pixel layer, and prolong the service life of the pixel layer.

[0037] In a possible implementation manner of the first aspect, along the direction from the substrate to the color-changing layer, the encapsulation layer includes a first inorganic layer, an organic layer, and a second inorganic layer arranged in sequence. The organic layer can improve the mechanical properties of the encapsulation layer, and the first inorganic layer and the second inorganic layer can avoid the organic layer from reacting and improve the encapsulation performance.

[0038] The second aspect further provides an electronic device, which includes a shell and a transparent display screen. The transparent display screen is the transparent display screen as described above, and the transparent display screen is connected with the shell.

[0039] Since the electronic device provided in the present application includes the transparent display screen of any technical solution of the first aspect, both can solve the same technical problem and achieve the same effect.

[0040] The third aspect further provides a manufacturing method of a transparent display screen, which includes the following steps.

[0041] A substrate is provided.

[0042] A pixel layer is arranged on the surface of the substrate. The pixel layer includes light-emitting parts and transparent parts distributed along a first direction.

[0043] A color-changing layer is arranged on the side of the pixel layer away from the substrate. The color-changing layer covers at least the transparent parts.

[0044] The material of the color-changing layer can be an electrochromic material, which can be an inorganic electrochromic material or an organic electrochromic material. The inorganic electrochromic material can be a transition metal oxide such as tungsten oxide (WO), nickel oxide (NiO), and vanadium oxide (VO). The organic electrochromic material can be a conductive polymer such as polyaniline (PAN) and polythiophene, or a complex represented by Prussian blue (PB), or an organic small molecule represented by viologen.

[0045] The color-changing layer can change color. The color-changing layer can switch between a color-changing state and a color-fading state. By arranging the color-changing layer to cover at least the transparent parts, the problem of poor contrast of the transparent display screen can be effectively solved. In addition, the transparency of the color-changing layer can be dynamically adjusted according to ambient light, so as to dynamically adjust the contrast of the transparent display screen and improve the display effect of the transparent display screen.

[0046] In a possible implementation manner of the third aspect, the transparent part includes a first area and a second area distributed along the first direction, and the second area is provided with two, and the first area is located between the two second areas.

[0047] Before the color-changing layer is arranged on the side of the pixel layer away from the substrate, the manufacturing method of the transparent display further includes:

[0048] The first light-shielding layer is arranged on the side of the pixel layer away from the substrate, and the first light-shielding layer covers the second area.

[0049] The first light-shielding layer can shield light, and by arranging the first light-shielding layer to cover the second area, ambient light cannot penetrate the first light-shielding layer, so that the light emitted by the light-emitting part does not overlap with the ambient light, thereby avoiding color crosstalk at the boundary between the light-emitting part and the transparent part, improving the color precision of the transparent display, and thus improving the display effect of the transparent display.

[0050] The material of the first light-shielding layer can be an organic black matrix material. The first light-shielding layer can be formed on the pixel layer through processes such as exposure and development.

[0051] In a possible implementation manner of the third aspect, after the first light-shielding layer is arranged on the side of the pixel layer away from the substrate, the manufacturing method of the transparent display further includes:

[0052] The light filter film is arranged on the light-emitting part.

[0053] The light filter film can filter light and has the effect of selectively transmitting light, and the color of the light emitted by the light-emitting part corresponds to the color of the light filter film. Since the light filter film absorbs most of the ambient light, the service life of the light-emitting part can be longer.

[0054] In a possible implementation manner of the third aspect, before the pixel layer is arranged on the surface of the substrate, the manufacturing method of the transparent display further includes:

[0055] The driving unit is arranged on the substrate and is electrically connected to the light-emitting part.

[0056] The driving unit is used to control the transparent display to emit light and display an image. Moreover, the driving unit can control the color-changing layer to change color, so as to adjust the transparency of the color-changing layer and thus adjust the display contrast of the transparent display. The driving unit can be a thin film transistor (TFT), which has a fast and accurate response rate, can quickly adjust the transparency of the color-changing layer according to the ambient light, and consumes less power.

[0057] In a possible implementation manner of the third aspect, before the color-changing layer is arranged on the side of the pixel layer away from the substrate, the method further includes:

[0058] The first conductive layer is electrically connected with the driving unit and is electrically connected with the color-changing layer.

[0059] The driving unit can be electrically connected with the color-changing layer through the first conductive layer, so as to control the color-changing layer to change color and adjust the transparency of the color-changing layer, thereby adjusting the display contrast of the transparent display screen. The first conductive layer can be a transparent conductive film formed by deposition, and the material of the first conductive layer can include indium tin oxide (ITO), indium zinc oxide (IZO), carbon nanotube and the like.

[0060] In a possible implementation manner of the third aspect, after the color-changing layer is arranged on the side of the pixel layer away from the substrate, the method further includes:

[0061] The second conductive layer is electrically connected with the driving unit and is electrically connected with the color-changing layer.

[0062] The first conductive layer can serve as an anode of the color-changing layer, and the second conductive layer can serve as a cathode of the color-changing layer to form a loop.

[0063] Similarly, the second conductive layer can be a transparent conductive film formed by deposition, and the material of the first conductive layer can include indium tin oxide (ITO), indium zinc oxide (IZO), carbon nanotube and the like.

[0064] In a possible implementation manner of the third aspect, after the color-changing layer is arranged on the side of the pixel layer away from the substrate, the method further includes:

[0065] The electrolyte layer is electrically connected with the driving unit.

[0066] The electrolyte layer is responsible for providing and transmitting ions, and can accelerate the color-changing layer to change color, so that the color-changing layer has a faster response and higher timeliness.

[0067] In a possible implementation manner of the third aspect, after the pixel layer is arranged on the surface of the substrate, the method further includes:

[0068] The encapsulation layer is arranged on the side of the pixel layer away from the substrate.

[0069] The encapsulation layer is arranged to avoid contact between the layer and water vapor and oxygen, reduce the aging rate of the pixel layer, and prolong the service life of the pixel layer. BRIEF DESCRIPTION OF DRAWINGS

[0070] Figure 1 A structural schematic diagram of an electronic device provided by an embodiment of the present application is shown in FIG. 1.

[0071] Figure 2 A structural schematic diagram of a transparent display screen provided by an embodiment of the present application is shown in FIG. 2.

[0072] Figure 3 A structural schematic diagram of a transparent display screen provided by an embodiment of the present application is shown in FIG. 2. Figure 2 A sectional view of the A-A section in FIG. 2 is shown in FIG. 3.

[0073] Figure 4 A sectional view of a transparent display screen provided by an embodiment of the present application is shown in FIG. 4.

[0074] Figure 5 A structural schematic diagram of a transparent display screen provided by an embodiment of the present application is shown in FIG. 5, in which the color-changing layer is in a color-changing state.

[0075] Figure 6 A structural schematic diagram of a transparent display screen provided by an embodiment of the present application is shown in FIG. 5, in which the color-changing layer is in a color-changing state. Figure 5 A structural schematic diagram of a transparent display screen provided by an embodiment of the present application is shown in FIG. 5, in which the color-changing layer is in a color-changing state.

[0076] Figure 7 A sectional view of another transparent display screen provided by an embodiment of the present application is shown in FIG. 6.

[0077] Figure 8 A sectional view of another transparent display screen provided by an embodiment of the present application is shown in FIG. 6.

[0078] Figure 9 A structural schematic diagram of another transparent display screen provided by an embodiment of the present application is shown in FIG. 7.

[0079] Figure 10 A sectional view of the B-B section in FIG. 7 is shown in FIG. 8. Figure 9

[0080] A sectional view of another transparent display screen provided by an embodiment of the present application is shown in FIG. 9. Figure 11

[0081] A sectional view of another transparent display screen provided by an embodiment of the present application is shown in FIG. 9. Figure 12

[0082] A structural schematic diagram of another transparent display screen provided by an embodiment of the present application is shown in FIG. 10. Figure 13

[0083] A structural schematic diagram of another transparent display screen provided by an embodiment of the present application is shown in FIG. 10. Figure 14 A structural schematic diagram of another transparent display screen provided by an embodiment of the present application is shown in FIG. 10.

[0084] Figure 15 Figure 1 is a schematic diagram of a cross section of a transparent display screen according to an embodiment of the present application; Figure 14 Figure 2 is a schematic diagram of a cross section of a transparent display screen according to another embodiment of the present application;

[0085] Figure 16 Figure 3 is a schematic diagram of a cross section of a transparent display screen according to another embodiment of the present application;

[0086] Figure 17 Figure 4 is a schematic diagram of a cross section of a transparent display screen according to another embodiment of the present application;

[0087] Figure 18 Figure 5 is a schematic diagram of a step of a method of manufacturing a transparent display screen according to an embodiment of the present application;

[0088] Figure 19 Figure 6 is a schematic diagram of a step of a method of manufacturing a transparent display screen according to another embodiment of the present application;

[0089] Figure 20 Figure 7 is a schematic diagram of a step of a method of manufacturing a transparent display screen according to another embodiment of the present application;

[0090] Figure 21 Figure 8 is a schematic diagram of a step of a method of manufacturing a transparent display screen according to another embodiment of the present application;

[0091] Figure 22 Figure 9 is a schematic diagram of a step of a method of manufacturing a transparent display screen according to another embodiment of the present application;

[0092] Figure 23 Figure 10 is a schematic diagram of a step of a method of manufacturing a transparent display screen according to another embodiment of the present application. DETAILED DESCRIPTION

[0093] In the embodiments of the present application, the terms "first", "second", "third" are only used for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include one or more of the features.

[0094] In the embodiments of the present application, the terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitation, the element defined by the statement "comprising a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0095] Please refer to Figure 1 ,Figure 1 A structural schematic diagram of an electronic device 200 is provided for an embodiment of the present application. An embodiment of the present application provides an electronic device 200, which can be a portable electronic device or other type of electronic device. For example, the electronic device 200 can be a mobile phone, a tablet computer, a notebook computer, a television, a vehicle-mounted device, a smart watch, etc. For the convenience of description, the electronic device 200 is taken as a notebook computer for detailed description.

[0096] The electronic device 200 can include a transparent display screen 100 and a housing 201, the transparent display screen 100 can be rotationally connected with the housing 201, the transparent display screen 100 can rotate relative to the housing 201, and the electronic device 200 can switch between a folded state and a hovering state along with the rotation. For example, the housing 201 can include a keyboard part.

[0097] For the convenience of the following description, an XYZ coordinate system is established, and the width direction of the transparent display screen 100 in the electronic device 200 is defined as the X-axis direction, the length direction of the transparent display screen 100 is defined as the Y-axis direction, and the thickness direction of the transparent display screen 100 is defined as the Z-axis direction. It can be understood that, Figure 1 Only some components included in the electronic device 200 are schematically shown, and the actual shape, actual size, actual position and actual structure of these components are not limited by Figure 1 .

[0098] For the convenience of description, the holes, grooves, holes, etc. in the drawings representing the characteristics of space are marked with arrowed leads, and the characteristics of the entity structure are marked with unarrowed leads.

[0099] Please refer to Figure 2 and Figure 3 , Figure 2 A structural schematic diagram of a transparent display screen 100 is provided for an embodiment of the present application, Figure 3 For Figure 2A cross-sectional view of the transparent display screen 100 is shown in FIG. 1. The transparent display screen 100 is transparent, and a user can clearly see the background behind the transparent display screen 100. The transparent display screen 100 includes a substrate 10 and a pixel layer 20. The substrate 10 can be a rigid substrate or a flexible substrate. The substrate 10 provides the transparent display screen 100 with a certain structural strength. The pixel layer 20 is disposed on the substrate 10. The pixel layer 20 includes light-emitting portions 21 and transparent portions 22 distributed along a first direction, for example, the Y-axis direction. The pixel layer 20 is used for display, so that the transparent display screen 100 can display text or images. The light-emitting portions 21 and the transparent portions 22 are distributed along the Y-axis direction. The light-emitting portions 21 can emit light, and the display screen can be displayed by controlling the light-emitting portions 21 to change color. The transparent display screen 100 can present a transparent display effect by setting the transparent portions 22.

[0100] For example, the light-emitting portions 21 can emit red light, green light, or blue light. The light-emitting portions 21 can include organic light-emitting diodes (OLEDs). The number of the light-emitting portions 21 and the transparent portions 22 can be multiple. The light-emitting portions 21 are located between two adjacent transparent portions 22.

[0101] For example, the transparent display screen 100 can further include a circuit layer, a protective layer, a sealing layer, and the like.

[0102] However, when the ambient light is strong, the display contrast of the transparent display screen 100 is low, and the user cannot clearly see the text or images displayed on the transparent display screen 100.

[0103] Please refer to Figure 4 , Figure 4 A cross-sectional view of a transparent display screen 100 is provided in an embodiment of the present application. To solve the problem of low display contrast of the transparent display screen 100, an embodiment of the present application provides a transparent display screen. The transparent display screen 100 includes a substrate 10, a pixel layer 20, and a color-changing layer 30.

[0104] The color-changing layer 30 is located on the side of the pixel layer 20 away from the substrate 10, and the color-changing layer 30 covers at least the transparent portions 22. The color-changing layer 30 can change color, and the color-changing layer 30 can switch between a color-changing state and a color-fading state. Please refer to Figure 5 and Figure 6 , Figure 5 A structure diagram of the color-changing layer 30 in the transparent display screen 100 in an embodiment of the present application is shown in FIG. 2, where the color-changing layer 30 is in the color-changing state. Figure 6 is Figure 5 A structure diagram of the color-changing layer 30 in the transparent display screen 100 in an embodiment of the present application is shown in FIG. 3, where the color-changing layer 30 is in the color-fading state. Figure 5As shown, when the ambient light is relatively strong, the display contrast of the transparent display 100 is relatively low, the color-changing layer 30 is in the color-changing state, so that the transparency of the color-changing layer 30 is reduced, for example, the color-changing layer 30 can become black, so that the ambient light cannot penetrate the color-changing layer 30, the contrast of the transparent display 100 can be improved, and the display effect of the transparent display 100 is improved. Figure 6 As shown, when the ambient light is relatively weak, the display contrast of the transparent display 100 is relatively high, the color-changing layer 30 is in the color-fading state, so that the transparency of the color-changing layer 30 is increased, for example, the color-changing layer 30 can become transparent, so that the ambient light can penetrate the color-changing layer 30, and the transmittance of the ambient light is improved.

[0105] That is, the transparent display 100 in the embodiment of the present application can effectively solve the problem of poor contrast of the transparent display 100 by setting the color-changing layer 30 to cover at least the transparent part 22, and the transparency of the color-changing layer 30 can be dynamically adjusted according to the ambient light, so that the contrast of the transparent display 100 is dynamically adjusted, and the display effect of the transparent display 100 is improved.

[0106] For example, the material of the color-changing layer 30 can be an electrochromic material.

[0107] In some embodiments, referring to Figure 7 , Figure 7 Another cross-sectional view of the transparent display 100 provided by the embodiment of the present application is shown. The transparent display 100 can further include an insulating layer 40, the insulating layer 40 includes a first part 41 and a second part 42 connected to each other, the first part 41 covers the light-emitting part 21, and the second part 42 is located on the side of the color-changing layer 30 away from the pixel layer 20.

[0108] The color-changing layer 30 covers the transparent part 22, and by setting the first part 41 and the second part 42, the gap between the adjacent two color-changing layers 30 can be filled, and the surface of the color-changing layer 30 away from the pixel layer 20 is more flat, so that the surface flatness of the transparent display 100 is improved.

[0109] On this basis, the surface of the insulating layer 40 away from the pixel layer 20 can be a plane, so that the surface of the transparent display 100 is more flat, and the surface flatness of the transparent display 100 is further improved, so that the display effect of the transparent display 100 is improved.

[0110] It can be understood that the material of the insulating layer 40 can be an insulating material.

[0111] In some embodiments, referring to Figure 8 , Figure 8A cross-sectional view of another transparent display screen 100 is provided in an embodiment of the present application. The color-changing layer 30 can cover the light-emitting portion 21 and the transparent portion 22, so that the surface of the transparent display screen 100 is flat, the surface flatness of the transparent display screen 100 is improved, and the display effect of the transparent display screen 100 is improved.

[0112] It can be understood that the color-changing layer 30 can include a third portion 31 and a fourth portion 32 connected to each other, the third portion 31 is arranged corresponding to the light-emitting portion 21, and the fourth portion 32 is arranged corresponding to the transparent portion 22.

[0113] When the external ambient light is strong and the display contrast of the transparent display screen 100 is low, the third portion 31 is in a faded state, for example, the third portion 31 can become transparent, so that the light emitted by the light-emitting portion 21 can penetrate the third portion 31 and be displayed; the fourth portion 32 is in a color-changing state, and the transparency of the fourth portion 32 is low, for example, the fourth portion 32 can become black, and the ambient light cannot penetrate the fourth portion 32, so that the contrast of the transparent display screen 100 can be improved, and the display effect of the transparent display screen 100 can be improved.

[0114] When the external ambient light is weak and the display contrast of the transparent display screen 100 is high, the third portion 31 and the fourth portion 32 are both in a faded state, and the transparency of the third portion 31 and the fourth portion 32 is high, for example, the third portion 31 and the fourth portion 32 can become transparent, so that the ambient light can penetrate the color-changing layer 30 and the transmittance of the ambient light is improved.

[0115] In some embodiments, please refer to Figure 9 and Figure 10 , Figure 9 a structure diagram of another transparent display screen 100 is provided in an embodiment of the present application, Figure 10 a cross-sectional view of a B-B section in Figure 9 . The transparent portion 22 includes a first region 221 and a second region 222 distributed along a first direction, the second region 222 is provided in two, and the first region 221 is located between the two second regions 222. That is, the two second regions 222 are located on both sides of the first region 221 along the Y-axis direction. The number of the light-emitting portion 21 and the transparent portion 22 is multiple, the transparent portion 22 is located between the two light-emitting portions 21, and the two second regions 222 are arranged corresponding to the two light-emitting portions 21 respectively.

[0116] The transparent display screen 100 further comprises a first light shielding layer 50, the first light shielding layer 50 is arranged on the side of the pixel layer 20 away from the substrate 10, and the first light shielding layer 50 covers the second area 222. When the ambient light is weak and the display contrast of the transparent display screen 100 is high, the color-changing layer 30 is in a faded state, for example, the color-changing layer 30 is transparent, and the ambient light can penetrate the color-changing layer 30. By arranging the first light shielding layer 50 to cover the second area 222, the ambient light cannot penetrate the first light shielding layer 50, so as to avoid the light emitted by the light-emitting part 21 overlapping with the ambient light, thereby avoiding color crosstalk at the boundary between the light-emitting part 21 and the transparent part 22, improving the color accuracy of the transparent display screen 100, and thus improving the display effect of the transparent display screen 100.

[0117] For example, the material of the first light shielding layer 50 can be an organic black matrix material.

[0118] In the first direction, the size of the first light shielding layer 50 is greater than or equal to 1 μm and less than or equal to 15 μm. The size of the first light shielding layer 50 is greater than or equal to 1 μm, so as to avoid the problem that the size of the first light shielding layer 50 is too small and the boundary color crosstalk still exists. The size of the first light shielding layer 50 is less than or equal to 15 μm, so as to avoid the problem that the size of the first light shielding layer 50 is too large and the transparent display effect of the transparent display screen 100 is not good when the color-changing layer 30 is in the faded state.

[0119] For example, in the first direction, the size of the first light shielding layer 50 can be greater than or equal to 2 μm and less than or equal to 5 μm, so that the size of the first light shielding layer 50 is more reasonable, the problem of boundary color crosstalk can be effectively solved, and the transparent display effect of the transparent display screen 100 is better.

[0120] For example, in the first direction, the size of the first light shielding layer 50 can be 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, 13 μm, 14 μm or 15 μm.

[0121] In some embodiments, please refer to Figure 11 , Figure 11 Another cross-sectional schematic view of a transparent display screen 100 is provided in the embodiments of the present application. The transparent display screen 100 further comprises a light filtering film 60, the light filtering film 60 is arranged on the side of the pixel layer 20 away from the substrate 10, and the light filtering film 60 at least covers the light-emitting part 21.

[0122] The light filtering film 60 can filter light and has the effect of selectively transmitting light. The color of the light filtering film 60 corresponds to the color of the light emitted by the light emitting portion 21. For example, when the light emitting portion 21 emits red light, the light filtering film 60 is a red light filtering film. After the ambient light is incident on the light filtering film 60, only red light can pass through the light filtering film 60. Similarly, when the light emitting portion 21 emits green light and blue light, only green light and blue light can pass through the light filtering film 60. In this way, since the light filtering film 60 absorbs most of the ambient light, the service life of the light emitting portion 21 can be longer.

[0123] On this basis, please refer to Figure 12 , Figure 12 Another cross-sectional view of a transparent display 100 is provided. The light filtering film 60 can cover the light emitting portion 21 and the first light shielding layer 50. It can be understood that the light filtering film 60 covers the first light shielding layer 50, the first light shielding layer 50 covers the two second regions 222, the first region 221, the two adjacent light filtering films 60 and the two first light shielding layers 50 form the mounting groove 51, the bottom wall of the mounting groove 51 includes the first region 221 of the transparent portion 22, and the side wall of the mounting groove 51 includes the first light shielding layer 50 and the light filtering film 60. The color changing layer 30 is located in the mounting groove 51. By covering the first light shielding layer 50 with the light filtering film 60, the size of the side wall of the mounting groove 51 along the Z-axis direction is larger, and the color changing layer 30 can be better formed.

[0124] For example, the thickness of the first light shielding layer 50, i.e., the size of the first light shielding layer 50 along the Z-axis direction. The thickness of the first light shielding layer 50 can be greater than or equal to 1 μm and less than or equal to 4 μm. The thickness of the light filtering film 60, i.e., the size of the light filtering film 60 along the Z-axis direction. The thickness of the light filtering film 60 can be greater than or equal to 1 μm and less than or equal to 4 μm.

[0125] The size of the side wall of the mounting groove 51 along the Z-axis direction = the thickness of the first light shielding layer 50 + the thickness of the light filtering film 60. The size of the side wall of the mounting groove 51 along the Z-axis direction can be greater than or equal to 4 μm and less than or equal to 16 μm. The size of the side wall of the mounting groove 51 along the Z-axis direction can be 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, 13 μm, 14 μm, 15 μm or 16 μm.

[0126] Further, the size of the side wall of the mounting groove 51 along the Z-axis direction can be greater than or equal to 6 μm and less than or equal to 10 μm, so that the size of the side wall of the mounting groove 51 along the Z-axis direction is more reasonable, and the subsequent formation of the color changing layer 30 is facilitated.

[0127] Based on this, please refer to Figure 13 , Figure 13Fig. 6 is a structural schematic diagram of another transparent display 100 provided by an embodiment of the present application. The light-emitting part 21 can include a plurality of sub-pixels 211 distributed along a second direction, which is perpendicular to the first direction, for example, the second direction can be the X-axis direction. The transparent display 100 further includes a second light-blocking layer 52, which is located between two adjacent sub-pixels 211.

[0128] Each sub-pixel 211 can emit light of different colors. The second light-blocking layer 52 is located between two adjacent sub-pixels 211, which can separate the two adjacent sub-pixels 211 and prevent the two adjacent sub-pixels 211 from affecting each other during display, thereby improving the color contrast of the transparent display 100 and making the display effect of the transparent display 100 better.

[0129] In some embodiments, please refer to Figure 14 and Figure 15 , Figure 14 Fig. 7 is a structural schematic diagram of another transparent display 100 provided by an embodiment of the present application, Figure 15 for Figure 14 Fig. 8 is a cross-sectional schematic diagram of the C-C section in Fig. 7. The transparent display 100 further includes a driving unit 70 disposed on the substrate 10. The driving unit 70 can be electrically connected with the light-emitting unit 21. The driving unit 70 is used to control the transparent display 100 to emit light and display images. Moreover, the driving unit 70 can control the color-changing layer 30 to change color, so as to adjust the transparency of the color-changing layer 30 and thus adjust the display contrast of the transparent display 100.

[0130] Based on this, the driving unit 70 can be a thin film transistor (TFT), which has a fast and accurate response rate, can quickly adjust the transparency of the color-changing layer 30 according to the ambient light, and consumes less power.

[0131] On this basis, please continue to refer to Figure 14 and Figure 15 . The transparent display 100 further includes a first conductive layer 71 disposed on the side of the color-changing layer 30 close to the substrate 10. The first conductive layer 71 is electrically connected with the color-changing layer 30, and the first conductive layer 71 can conduct electricity for the color-changing layer 30. For example, the first conductive layer 71 can serve as the anode of the color-changing layer 30.

[0132] Moreover, the first conductive layer 71 is electrically connected with the driving unit 70, and the driving unit 70 can be electrically connected with the color-changing layer 30 through the first conductive layer 71, so as to control the color-changing layer 30 to change color, adjust the transparency of the color-changing layer 30, and thus adjust the display contrast of the transparent display 100.

[0133] The transparent display screen 100 further comprises a first via hole 72 extending along the thickness direction of the substrate 10, i.e., the Z-axis direction. The first via hole 72 is filled with a first conductive part 73 made of a conductive material, and the first via hole 72 is configured to accommodate the first conductive part 73. The first conductive layer 71 is electrically connected to the driving unit 70 through the first conductive part 73.

[0134] For example, the first via hole 72 can be subjected to hole metallization, which refers to plating a conductive metal material on the hole wall through chemical plating, electroplating or other processes to realize the connection between the top layer and the bottom layer of the hole. By subjecting the first via hole 72 to hole metallization, the metal on the hole wall of the first via hole 72 serves as the first conductive part 73, so that the connection between the first conductive part 73 and the hole wall of the first via hole 72 is more secure and reliable.

[0135] The transparent display screen 100 further comprises a transition layer 77 located on the side of the first conductive layer 71 close to the substrate 10. The transition layer 77 is made of an insulating material and is configured to isolate the first conductive layer 71 from the pixel layer 20 to avoid interference between the first conductive layer 71 and the pixel layer 20.

[0136] The transition layer 77 can be made of silicon oxide, silicon nitride or silicon oxynitride, or a photosensitive organic material, which can improve the light transmittance of the transparent display screen 100.

[0137] Based on this, when the color-changing layer 30 covers the light-emitting part 21 and the transparent part 22, the transition layer 77 can comprise a fifth part 771 and a sixth part 772 connected to each other. The fifth part 771 covers the transparent part 22, and the sixth part 772 is located on the side of the light filter 60 away from the pixel layer 20. The transition layer 77 is provided with the fifth part 771 and the sixth part 772, so that the surface of the light filter 60 away from the pixel layer 20 is smoother, which facilitates the subsequent formation of the color-changing layer 30, and the color-changing layer 30 can have a better surface flatness after covering the light-emitting part 21 and the transparent part 22.

[0138] Please continue to refer to Figure 14 and Figure 15 . The transparent display screen 100 further comprises a second conductive layer 74 located on the side of the color-changing layer 30 away from the substrate 10. The second conductive layer 74 is electrically connected to the color-changing layer 30 and can conduct electricity for the color-changing layer 30. For example, the second conductive layer 74 can serve as the cathode of the color-changing layer 30.

[0139] Furthermore, the second conductive layer 74 is electrically connected to the driving unit 70. The driving unit 70 can be electrically connected to the color-changing layer 30 through the second conductive layer 74, thereby controlling the color-changing layer 30 to change color and adjusting the transparency of the color-changing layer 30, thereby adjusting the display contrast of the transparent display screen 100.

[0140] The transparent display screen 100 also includes a second via 75 extending along the thickness direction of the substrate 10, i.e., the second via 75 extends along the Z-axis direction. The second via 75 is filled with a second conductive portion 76 made of a conductive material, and the second via 75 is used to accommodate the second conductive portion 76. The second conductive layer 74 is electrically connected to the driving unit 70 through the second conductive portion 76.

[0141] Similarly, the second via 75 can be metallized, and the metal on the wall of the second via 75 can be used as the second conductive part 76, so that the connection between the second conductive part 76 and the wall of the second via 75 is tighter and more reliable.

[0142] It is understandable that after forming the first conductive layer 71, a first via 72 and a first conductive portion 73 can be formed to achieve electrical connection between the first conductive layer 71 and the driving unit 70 through the first conductive portion 73. Then, a color-changing layer 30 and a second conductive layer 74 are formed on the first conductive layer 71. After forming the second conductive layer 74, a second via 75 and a second conductive portion 76 are formed to achieve electrical connection between the second conductive layer 74 and the driving unit 70 through the second conductive portion 76.

[0143] In some embodiments, please refer to Figure 16 , Figure 16 This is a cross-sectional schematic diagram of another transparent display screen 100 provided in an embodiment of this application. The transparent display screen 100 further includes an electrolyte layer 78, which is disposed on the side of the color-changing layer 30 away from the substrate 10. The electrolyte layer 78 is electrically connected to the driving unit 70 and is responsible for providing and transporting ions. The electrolyte layer 78 can accelerate the color change of the color-changing layer 30, making the response of the color-changing layer 30 faster and its timeliness higher.

[0144] Based on this, please continue to refer to Figure 16 The transparent display screen 100 may also include an electrolyte protection layer 79, which is disposed on the side of the electrolyte layer 78 away from the color-changing layer 30. The electrolyte protection layer 79 is used to protect the electrolyte layer 78 and extend the service life of the electrolyte layer 78.

[0145] The electrolyte protective layer 79 may be made of insulating materials such as silicon nitride, silicon oxide, and organic resin. The electrolyte protective layer 79 can isolate air and moisture, prevent the electrolyte layer 78 from contacting air and moisture, reduce the aging rate of the electrolyte layer 78, and thus extend the service life of the electrolyte layer 78.

[0146] In some embodiments, referring to Figure 17 , Figure 17 Another cross-sectional schematic view of a transparent display screen 100 is provided in some embodiments of the present application. The transparent display screen 100 further includes an encapsulation layer 80 disposed between the pixel layer 20 and the color-changing layer 30. The encapsulation layer 80 serves a protective function. The organic material of the pixel layer 20 is very sensitive to water vapor and oxygen and the like. Therefore, the encapsulation layer 80 can be provided to avoid contact between the layer 20 and water vapor and oxygen, reduce the aging rate of the pixel layer 20, and prolong the service life of the pixel layer 20.

[0147] On this basis, the encapsulation layer 80 includes a first inorganic layer 81, an organic layer 82, and a second inorganic layer 83 disposed in sequence in the direction from the substrate 10 to the color-changing layer 30. The organic layer 82 is located between the first inorganic layer 81 and the second inorganic layer 83. The organic layer 82 can improve the mechanical properties of the encapsulation layer 80. The first inorganic layer 81 and the second inorganic layer 83 can avoid the reaction of the organic layer 82 and improve the encapsulation performance.

[0148] Referring to Figure 18 , Figure 18 A step schematic view of a manufacturing method of a transparent display screen is provided in some embodiments of the present application. A manufacturing method of a transparent display screen is provided in some embodiments of the present application, which includes the following steps.

[0149] In step S10, a substrate 10 is provided.

[0150] The substrate 10 can be a rigid substrate, such as a glass substrate, a quartz substrate, or a plastic substrate, or the like. The substrate 10 can also be a flexible substrate, such as a transparent polyimide film (CPI film), which is a kind of bidirectional stretch transparent film with excellent performance, and has the advantages of good chemical stability, good heat resistance, not easy to break, good ductility, and the like.

[0151] In step S20, a pixel layer 20 is disposed on the surface of the substrate 10. The pixel layer 20 includes light-emitting portions 21 and transparent portions 22 distributed along a first direction.

[0152] The pixel layer 20 is used for emitting light and displaying a picture, so that the transparent display screen 100 can display text or images. The light-emitting portions 21 can emit light. The light-emitting portions 21 can include organic light-emitting diodes (OLEDs), which are referred to as OLEDs hereinafter. The pixel layer 20 can be prepared by means of evaporation or inkjet printing on the surface of the substrate 10.

[0153] Evaporation is to make the material to be evaporated into atoms or molecules by heating with electric current, electron beam bombardment heating and laser heating in vacuum, and the atoms or molecules move in a straight line with a large free path, collide with the surface of the substrate 10, and then condense to form a thin film. Evaporation has the advantages of simple film forming method, high thin film purity and high compactness.

[0154] Inkjet printing is mainly to melt OLED organic materials using solvents, and then to directly print the materials on the surface of the substrate 10 to form the light-emitting part 21. The inkjet printing process is relatively simple, easier to process large substrates 10, and lower cost.

[0155] In step S30, a color-changing layer 30 is arranged on the side of the pixel layer 20 away from the substrate 10, and the color-changing layer 30 covers at least the transparent part 22.

[0156] The material of the color-changing layer 30 can be an electrochromic material, which can be an inorganic electrochromic material or an organic electrochromic material. The inorganic electrochromic material can be a transition metal oxide such as tungsten trioxide (WO3), nickel oxide (NiO) and vanadium pentoxide (V2O5), the organic electrochromic material can be a conductive polymer such as polyaniline (PAN) and polythiophene, or a complex represented by Prussian blue (PB), or an organic small molecule material represented by viologen.

[0157] The color-changing layer 30 can change color, and the color-changing layer 30 can switch between a color-changing state and a color-fading state. By arranging the color-changing layer 30 to cover at least the transparent part 22, the problem of poor contrast of the transparent display screen 100 can be effectively solved, and the transparency of the color-changing layer 30 can be dynamically adjusted according to the ambient light, so as to dynamically adjust the contrast of the transparent display screen 100 and improve the display effect of the transparent display screen 100.

[0158] The thickness of the color-changing layer 30 refers to the size of the color-changing layer 30 along the Z-axis direction, and the thickness of the color-changing layer 30 can be greater than or equal to 1 μm and less than or equal to 15 μm.

[0159] For example, the thickness of the color-changing layer 30 can be 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, 13 μm, 14 μm or 15 μm.

[0160] In some embodiments, please refer to Figure 19 , Figure 19 Another step schematic diagram of a manufacturing method of a transparent display screen provided by the embodiments of the present application.

[0161] The transparent part 22 includes a first area 221 and two second areas 222 distributed along the first direction, and the first area 221 is located between the two second areas 222. That is, the two second areas 222 are located on both sides of the first area 221 along the Y-axis direction. The number of the light-emitting parts 21 and the transparent parts 22 is plural, and the transparent part 22 is located between the two light-emitting parts 21, and the two second areas 222 are respectively arranged corresponding to the two light-emitting parts 21.

[0162] Before step S30, the manufacturing method of the transparent display further includes:

[0163] In step S21, a first light-shielding layer 50 is arranged on the side of the pixel layer 20 away from the substrate 10, and the first light-shielding layer 50 covers the second areas 222.

[0164] By arranging the first light-shielding layer 50 to cover the second areas 222, the ambient light cannot penetrate the first light-shielding layer 50, avoiding color crosstalk at the boundary between the light-emitting part 21 and the transparent part 22, improving the color accuracy of the transparent display 100, and thus improving the display effect of the transparent display 100.

[0165] The first light-shielding layer 50 can shield light, and by arranging the first light-shielding layer 50 to cover the second areas 222, the ambient light cannot penetrate the first light-shielding layer 50, avoiding the overlap of the light emitted by the light-emitting part 21 and the ambient light, thereby avoiding color crosstalk at the boundary between the light-emitting part 21 and the transparent part 22, improving the color accuracy of the transparent display 100, and thus improving the display effect of the transparent display 100.

[0166] The material of the first light-shielding layer 50 can be an organic black matrix material. The first light-shielding layer 50 can be formed on the pixel layer 20 by processes such as exposure and development, and the optical density (OD) of the first light-shielding layer 50 can be greater than or equal to 0.5 and less than or equal to 2. The optical density represents the density of light absorbed by an object, also known as absorbance. The optical density is the logarithm of the ratio of incident light to transmitted light, or the logarithm of the reciprocal of transmittance. The calculation formula of the optical density is: OD = lg(incoming light / transmitted light), or OD = lg(1 / transmittance).

[0167] For example, the optical density of the first light-shielding layer 50 can be 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9 or 2.

[0168] Please continue to refer to Figure 19 After step S21, the manufacturing method of the transparent display further includes:

[0169] Step S22, disposing the light filter film 60 on the light emitting part 21.

[0170] The light filter film 60 can filter light and has the effect of selectively transmitting light. The color of the light emitted by the light emitting part 21 corresponds to the color of the light filter film 60. Because the light filter film 60 absorbs most of the ambient light, the service life of the light emitting part 21 can be longer.

[0171] In addition, the light filter film 60 can cover the first light shielding layer 50, the first light shielding layer 50 covers the two second regions 222, the first region 221, the light filter film 60 and the two first light shielding layers 50 enclose the mounting groove 51. The color changing layer 30 is located in the mounting groove 51. By covering the first light shielding layer 50 with the light filter film 60, the size of the side wall of the mounting groove 51 in the Z-axis direction is larger, which can better form the color changing layer 30 and facilitate subsequent inkjet printing to form the color changing layer 30.

[0172] In some embodiments, referring to Figure 20 , Figure 20 Another step schematic diagram of the manufacturing method of the transparent display screen provided by the embodiment of the present application.

[0173] Before step S20, the manufacturing method of the transparent display screen further includes:

[0174] Step S11, disposing the driving unit 70 on the substrate 10, the driving unit 70 is electrically connected with the light emitting part 21.

[0175] The driving unit 70 is used to control the transparent display screen 100 to emit light and display images. In addition, the driving unit 70 can control the color changing of the color changing layer 30 to adjust the transparency of the color changing layer 30, so as to adjust the display contrast of the transparent display screen 100. The driving unit 70 can be a thin film transistor (TFT). The thin film transistor has a fast and accurate response rate, can quickly adjust the transparency of the color changing layer 30 according to the ambient light, and consumes less power.

[0176] On this basis, referring to Figure 21 , Figure 21 Another step schematic diagram of the manufacturing method of the transparent display screen provided by the embodiment of the present application. Before step S30, the manufacturing method of the transparent display screen further includes:

[0177] Step S24, disposing the first conductive layer 71 on the side of the pixel layer 20 away from the substrate 10, the first conductive layer 71 is electrically connected with the driving unit 70, and the first conductive layer 71 is electrically connected with the color changing layer 30.

[0178] The driving unit 70 can be electrically connected with the color-changing layer 30 through the first conductive layer 71, so as to control the color-changing layer 30 to change color, adjust the transparency of the color-changing layer 30, and thus adjust the display contrast of the transparent display screen 100. The first conductive layer 71 can be a transparent conductive film formed by deposition, and the material of the first conductive layer 71 can include Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), carbon nanotubes, etc.

[0179] After the first conductive layer 71 is formed, the first via hole 72 can be formed, and the first conductive part 73 is filled in the first via hole 72, and the first conductive layer 71 is electrically connected with the driving unit 70 through the first conductive part 73.

[0180] Please continue to refer to Figure 21 Before step S24, the method for manufacturing the transparent display screen further comprises:

[0181] In step S23, the transition layer 77 is arranged on the side of the pixel layer 20 away from the substrate 10.

[0182] The transition layer 77 is used to isolate the first conductive layer 71 from the pixel layer 20, so as to avoid interference between the first conductive layer 71 and the pixel layer 20.

[0183] The material of the transition layer 77 can include silicon oxide, silicon nitride or silicon oxynitride. The material of the transition layer 77 can also include photosensitive organic materials, such as acrylic resin, organic silicon resin, epoxy resin, etc.

[0184] The thickness of the transition layer 77 can be greater than or equal to 2 μm and less than or equal to 6 μm.

[0185] For example, the thickness of the transition layer 77 can be 2 μm, 3 μm, 4 μm, 5 μm or 6 μm.

[0186] Please continue to refer to Figure 21 After step S30, the method for manufacturing the transparent display screen further comprises:

[0187] In step S31, the second conductive layer 74 is arranged on the side of the color-changing layer 30 away from the substrate 10, the second conductive layer 74 is electrically connected with the color-changing layer 30, and the second conductive layer 74 is electrically connected with the driving unit 70.

[0188] The first conductive layer 71 can be used as an anode of the color-changing layer 30, and the second conductive layer 74 can be used as a cathode of the color-changing layer 30, so as to form a loop.

[0189] Similarly, the second conductive layer 74 can be a transparent conductive film formed by deposition, and the material of the first conductive layer 71 can include Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), carbon nanotubes, etc.

[0190] After the second conductive layer 74 is formed, the second via hole 75 can be formed, the second conductive part 76 is filled in the second via hole 75, and the second conductive layer 74 is electrically connected to the driving unit 70 through the second conductive part 76.

[0191] For example, the first conductive layer 71 can include a third conductive part 711 and a fourth conductive part 712, and the third conductive part 711 and the fourth conductive part 712 are not in communication with each other, so as to avoid short circuit.

[0192] In some embodiments, referring to Figure 22 , Figure 22 Another step schematic diagram of a manufacturing method of a transparent display screen provided by the embodiments of the present application.

[0193] After the step S30, the manufacturing method of the transparent display screen further includes:

[0194] In the step S32, an electrolyte layer 78 is arranged on the side of the color-changing layer 30 away from the substrate 10, and the electrolyte layer 78 is electrically connected to the driving unit 70.

[0195] The electrolyte layer 78 is responsible for providing and transmitting ions, and the electrolyte layer 78 can accelerate the color change of the color-changing layer 30, so that the response of the color-changing layer 30 is faster and the timeliness is higher.

[0196] The material of the electrolyte layer 78 can be a liquid, gel or solid electrolyte. The liquid electrolyte includes LiClO4 / PC formed by dissolving lithium perchlorate (LiClO4) in propylene carbonate (PC), and an aqueous solution of potassium hydroxide (KOH) and sulfuric acid (H2SO4), etc., which has a high ionic conductivity and can reach 10 -2 S·cm -1 Above, the electrochromic material changes color quickly in such electrolyte, but the liquid electrolyte is difficult to encapsulate, and is prone to leakage during use.

[0197] Gel electrolyte is also called semi-solid or quasi-solid electrolyte. The gel electrolyte is formed by adding a polymer such as polyethylene oxide (PEO) or polyvinyl butyral (PVB) into a liquid electrolyte, or by adding a UV curing agent or a thermal curing agent into a liquid electrolyte. Although the ionic conductivity of the gel electrolyte is slightly lower than that of the liquid electrolyte (usually greater than or equal to 10 -6 S·cm -1 and less than or equal to 10 -2 S·cm -1 ), the gel electrolyte has a lower risk of leakage during use, is easy to package, and can be used to prepare electrochromic devices.

[0198] Solid electrolyte, commonly prepared by physical vapor deposition (PVD) film plating technology, is a lithium salt or aluminum salt film. The ionic conductivity of the solid electrolyte is relatively low, usually less than or equal to 10 -6 S·cm -1 . The solid electrolyte has the advantages of easy preparation and stable performance.

[0199] On this basis, after step S32, the method for manufacturing the transparent display screen further includes:

[0200] Step S33, an electrolyte protection layer 79 is arranged on the side of the electrolyte layer 78 away from the color-changing layer 30.

[0201] The electrolyte protection layer 79 is used to protect the electrolyte layer 78 and prolong the service life of the electrolyte layer 78.

[0202] In some embodiments, please refer to Figure 23 , Figure 23 Another step schematic diagram of the method for manufacturing the transparent display screen provided by the embodiments of the present application.

[0203] After step S20, the method for manufacturing the transparent display screen further includes:

[0204] Step S25, a packaging layer 80 is arranged on the side of the pixel layer 20 away from the substrate 10.

[0205] The packaging layer 80 can avoid the contact between the layer 20 and water vapor and oxygen, reduce the aging rate of the pixel layer 20, and prolong the service life of the pixel layer 20.

[0206] On this basis, step S25 includes:

[0207] Step S251: A first inorganic layer 81 is formed on the side of the pixel layer 20 away from the substrate 10;

[0208] Step S252: An organic layer 82 is disposed on the side of the first inorganic layer 81 away from the pixel layer 20;

[0209] Step S253: A second inorganic layer 83 is disposed on the side of the organic layer 82 away from the first inorganic layer 81.

[0210] The organic layer 82 is located between the first inorganic layer 81 and the second inorganic layer 83. The organic layer 82 can improve the mechanical properties of the encapsulation layer 80, and the first inorganic layer 81 and the second inorganic layer 83 can prevent the organic layer 82 from reacting, thereby improving the encapsulation performance.

[0211] The material of the first inorganic layer 81 includes a silicon oxide thin film or a silicon oxynitride thin film, and the thickness of the first inorganic layer 81 can be greater than or equal to 0.2 μm and less than or equal to 1.5 μm.

[0212] For example, the thickness of the first inorganic layer 81 can be 0.2μm, 0.3μm, 0.4μm, 0.5μm, 0.6μm, 0.7μm, 0.8μm, 0.9μm, 1μm, 1.1μm, 1.2μm, 1.3μm, 1.4μm or 1.5μm.

[0213] The material of the organic layer 82 may include acrylic resin, silicone resin, epoxy resin, and other organic resins. The thickness of the organic layer 82 may be greater than or equal to 2 μm and less than or equal to 12 μm.

[0214] For example, the thickness of the organic layer 82 can be 2μm, 3μm, 4μm, 5μm, 6μm, 7μm, 8μm, 9μm, 10μm, 11μm or 12μm.

[0215] The material of the second inorganic layer 83 may include a silicon nitride thin film or a silicon oxynitride thin film with better encapsulation performance. The thickness of the second inorganic layer 83 may be greater than or equal to 0.2 μm and less than or equal to 1.5 μm.

[0216] For example, the thickness of the second inorganic layer 83 can be 0.2μm, 0.3μm, 0.4μm, 0.5μm, 0.6μm, 0.7μm, 0.8μm, 0.9μm, 1μm, 1.1μm, 1.2μm, 1.3μm, 1.4μm or 1.5μm.

[0217] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0218] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A transparent display screen, characterized by The transparent display screen comprises a substrate, a pixel layer located on the substrate, the pixel layer comprising light-emitting portions and transparent portions distributed along a first direction, and a color-changing layer located on a side of the pixel layer away from the substrate, the color-changing layer covering at least the transparent portions. The transparent display screen further comprises an insulating layer, the insulating layer comprising a first portion and a second portion connected to each other, the first portion covering the light-emitting portions, and the second portion located on a side of the color-changing layer away from the pixel layer. A surface of the insulating layer away from the pixel layer is a plane. The color-changing layer covers the transparent portions and the light-emitting portions.

2. The transparent display screen of claim 1, wherein, The transparent display screen further comprises a first light-shielding layer, the first light-shielding layer being arranged on a side of the pixel layer away from the substrate, the transparent portions comprising first regions and second regions distributed along the first direction, the second regions being arranged in two, and the first regions being located between the two second regions, the first light-shielding layer covering the second regions.

3. The transparent display screen of claim 2, wherein, In the first direction, a size of the first light-shielding layer is greater than or equal to 1 μm and less than or equal to 15 μm.

4. The transparent display screen according to any one of claims 1 to 3, wherein, The transparent display screen further comprises a light-filtering film, the light-filtering film being arranged on a side of the pixel layer away from the substrate, and the light-filtering film covering at least the light-emitting portions.

5. The transparent display screen according to any one of claims 1 to 4, wherein, The light-filtering film covers the light-emitting portions and the first light-shielding layer.

6. The transparent display screen of claim 5, wherein, The light-emitting portions comprise a plurality of sub-pixels distributed along a second direction, the second direction being perpendicular to the first direction, and the transparent display screen further comprises a second light-shielding layer located between adjacent two sub-pixels.

7. The transparent display screen of claim 5, wherein, The transparent display screen further comprises a driving unit arranged on the substrate, the driving unit being electrically connected to the light-emitting portions.

8. The transparent display screen of claim 7, wherein, The driving unit is a thin film transistor.

9. The transparent display screen according to any one of claims 1 to 8, wherein, The transparent display screen further comprises a first conductive layer arranged on a side of the color-changing layer close to the substrate, the first conductive layer being electrically connected to the color-changing layer, and the first conductive layer being electrically connected to the driving unit.

10. The transparent display screen according to any one of claims 1 to 9, wherein, The transparent display screen further comprises a first via extending along a thickness direction of the substrate, the first via being filled with a first conductive part, and the first conductive layer being electrically connected to the driving unit through the first conductive part.

11. The transparent display screen of claim 10, wherein, The transparent display screen further comprises a transition layer located on a side of the first conductive layer close to the substrate.

12. The transparent display screen of claim 10, wherein, The transparent display screen further comprises an electrolyte layer arranged on a side of the color-changing layer away from the substrate, the electrolyte layer being electrically connected to the driving unit.

13. The transparent display screen of claim 12, wherein, The transparent display screen further comprises an electrolyte protection layer arranged on a side of the electrolyte layer away from the color-changing layer.

14. The transparent display screen of claim 12, wherein, The transparent display screen further comprises a second conductive layer arranged on a side of the color-changing layer away from the substrate, the second conductive layer being electrically connected to the color-changing layer, and the second conductive layer being electrically connected to the driving unit.

15. The transparent display screen of claim 10, wherein, The transparent display screen further comprises a second via extending along a thickness direction of the substrate, the second via being filled with a second conductive part, and the second conductive layer being electrically connected to the driving unit through the second conductive part.

16. The transparent display screen of claim 15, wherein, ​ 17. The transparent display screen of claim 10, wherein, ​ 18. The transparent display screen of claim 17, wherein, ​ 19. The transparent display of any of claims 1-18, wherein, The transparent display screen further comprises an encapsulation layer, which is arranged between the pixel layer and the color-changing layer.

20. The transparent display screen of claim 19, wherein, The encapsulation layer comprises, in sequence, a first inorganic layer, an organic layer, and a second inorganic layer in the direction from the substrate to the color-changing layer.

21. An electronic device, comprising: The electronic device comprises: a housing; a transparent display screen according to any one of claims 1 to 20, which is connected to the housing.

22. A method of making a transparent display, the method comprising: comprises: providing a substrate; arranging a pixel layer on a surface of the substrate, the pixel layer comprising light-emitting portions and transparent portions distributed along a first direction; arranging a color-changing layer on a side of the pixel layer away from the substrate, the color-changing layer covering at least the transparent portions.

23. The method of claim 22, wherein The transparent portions comprise first regions and second regions distributed along the first direction, two of the second regions are arranged, and the first regions are located between the two second regions. Before the color-changing layer is arranged on the side of the pixel layer away from the substrate, the method for manufacturing the transparent display screen further comprises: arranging a first light-shielding layer on the side of the pixel layer away from the substrate, the first light-shielding layer covering the second regions.

24. The method of claim 23, wherein, After the first light-shielding layer is arranged on the side of the pixel layer away from the substrate, the method for manufacturing the transparent display screen further comprises: arranging a light-filtering film on the light-emitting portions.

25. The method of claim 22, 23 or 24, wherein the transparent display is made by a method comprising: providing a transparent substrate; providing a plurality of light emitting elements; and providing a plurality of light absorbing elements. Before the pixel layer is arranged on the surface of the substrate, the method for manufacturing the transparent display screen further comprises: arranging a driving unit on the substrate, the driving unit being electrically connected to the light-emitting portions.

26. The method of claim 25, wherein, Before the color-changing layer is arranged on the side of the pixel layer away from the substrate, the method for manufacturing the transparent display screen further comprises: arranging a first conductive layer on the side of the pixel layer away from the substrate, the first conductive layer being electrically connected to the driving unit, and the first conductive layer being electrically connected to the color-changing layer.

27. The method of claim 25 or 26, wherein, After the color-changing layer is arranged on the side of the pixel layer away from the substrate, the method for manufacturing the transparent display screen further comprises: arranging a second conductive layer on a side of the color-changing layer away from the substrate, the second conductive layer being electrically connected to the color-changing layer, and the second conductive layer being electrically connected to the driving unit.

28. The method of claim 25, 26, or 27, wherein the transparent display is made by a method comprising: providing a transparent substrate; providing a plurality of light emitting diodes; and providing a plurality of light absorbing layers, each light absorbing layer being disposed between a respective pair of light emitting diodes. After the color-changing layer is arranged on the side of the pixel layer away from the substrate, the method for manufacturing the transparent display screen further comprises: arranging an electrolyte layer on a side of the color-changing layer away from the substrate, the electrolyte layer being electrically connected to the driving unit.

29. The method of claim 22 to 28, wherein, After the pixel layer is arranged on the surface of the substrate, the method for manufacturing the transparent display screen further comprises: arranging an encapsulation layer on the side of the pixel layer away from the substrate.

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