Transparent display panel, transparent display device and manufacturing method of transparent display panel

Abstract

The present application relates to a kind of transparent display panel, including transparent area and non-transparent area, the transparent display panel includes transparent substrate and the light-shielding layer of setting on the transparent substrate, the light-shielding layer includes the first area in the transparent area and the second area in the non-transparent area;The first area is configured as opening area to form first light-transmitting part for exposing the transparent area, each side of the first light-transmitting part is part of circle, so that the second area surrounded by multiple first light-transmitting part is circular.The present application also relates to a kind of manufacturing method of transparent display panel and transparent display device.

Description

Technical Field

[0001] This invention relates to the field of display product manufacturing technology, and in particular to a transparent display panel, a transparent display device, and a method for manufacturing a transparent display panel. Background Technology

[0002] A transparent display device is used to allow a user to view an object or image arranged on the opposite side of the display device. The transparent display device includes a display area on which an image is displayed and a non-display area, wherein the display area may include a non-transparent area that cannot transmit external light, and the non-display area may include a transparent area that can transmit external light. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a transparent display panel, a transparent display device, and a method for manufacturing a transparent display panel, thereby resolving the issue that irregular shapes in the transparent area lead to localized strong diffraction, resulting in poor display quality or even the inability to properly read the content of the display screen.

[0004] To achieve the above objectives, the technical solution adopted in the embodiments of the present invention is: a transparent display panel, including a transparent area and a non-transparent area, the transparent display panel including a transparent substrate and a light-shielding layer disposed on the transparent substrate, the light-shielding layer including a first area located in the transparent area and a second area located in the non-transparent area;

[0005] The first region is configured as an opening to form a first light-transmitting portion for exposing the transparent region.

[0006] The second region includes at least one circular area.

[0007] Optionally, two adjacent circular regions are arranged tangentially, and the first light-transmitting portion includes a plurality of sub-light-transmitting portions, each side of which is part of a circle.

[0008] Optionally, adjacent circular areas can be spaced apart.

[0009] Optionally, the transparent display panel includes at least one display area located in the non-transparent area, and an opening is provided in at least one of the circular areas to form a second light-transmitting portion for exposing the corresponding display area.

[0010] Optionally, the circular area includes a blocking portion located outside the second light-transmitting portion, and two adjacent circular areas are tangentially arranged.

[0011] The transparent display panel also includes a wiring area located around the periphery of the display area, and the orthographic projection of the wiring area on the light-shielding layer is located within the shielding portion.

[0012] Optionally, adjacent circular areas can be spaced apart.

[0013] The transparent display panel also includes a wiring area located around the display area, with a portion of the wiring area exposed outside the transparent area, and the wiring within the wiring area being made of a transparent material.

[0014] Optionally, a display functional layer and an encapsulation layer are stacked on the transparent substrate, and a black matrix layer is disposed on the encapsulation layer, the black matrix layer forming the light-shielding layer.

[0015] Optionally, a display function layer is disposed on the transparent substrate. The display function layer includes a driving circuit layer and a pixel layer stacked together. The pixel layer includes a pixel definition layer for defining a plurality of sub-pixels, and the pixel definition layer forms the light-shielding layer.

[0016] Optionally, the display function layer includes a pixel layer, the pixel layer further includes a pixel definition layer and a plurality of sub-pixels, the pixel definition layer is provided with a plurality of pixel openings, the sub-pixels are disposed within the pixel openings, and the sub-pixels include a first electrode layer, a light-emitting function layer and a second electrode layer stacked together, the first electrode layer being connected to the transistor.

[0017] Optionally, a buffer layer, a driving circuit layer, a planarization layer, a pixel layer, and an encapsulation layer are sequentially stacked on the transparent substrate, wherein the driving circuit layer and the pixel layer are located in the non-transparent area.

[0018] This invention also provides a transparent display device, including the transparent display panel described above.

[0019] This invention also provides a method for manufacturing a transparent display panel, used to manufacture the aforementioned transparent display panel, the method comprising:

[0020] A transparent substrate is provided, the transparent substrate having a transparent region forming region and a non-transparent region forming region;

[0021] A buffer layer is formed on the transparent substrate.

[0022] A driving circuit layer is formed on the portion of the buffer layer located in the non-transparent area formation region;

[0023] A planarization layer is formed on the driving circuit layer, and the orthogonal projection of the planarization layer on the substrate covers the transparent area formation area and the non-transparent area formation area.

[0024] A pixel layer is formed on the portion of the flat layer located in the non-transparent area formation region;

[0025] An encapsulation layer is formed on the pixel layer, and the orthographic projection of the encapsulation layer on the substrate covers the transparent area formation area and the non-transparent area formation area.

[0026] A light-shielding layer is formed on the encapsulation layer;

[0027] Through a patterning process, an opening area is created on the light-shielding layer to form a first light-transmitting portion for exposing the transparent area forming area. Each side of the first light-transmitting portion is part of a circle, so that the area enclosed by a plurality of the first light-transmitting portions is circular.

[0028] The present invention also provides a method for manufacturing a transparent display panel, for manufacturing the above-mentioned transparent display panel, the method comprising:

[0029] A transparent substrate is provided, the transparent substrate having a transparent region forming region and a non-transparent region forming region;

[0030] A buffer layer is formed on the transparent substrate.

[0031] A driving circuit layer is formed on the portion of the buffer layer located in the non-transparent area formation region;

[0032] A planarization layer is formed on the driving circuit layer, and the orthogonal projection of the planarization layer on the substrate covers the transparent area formation area and the non-transparent area formation area.

[0033] A first electrode layer and a pixel definition layer are sequentially stacked on the portion of the flat layer located in the non-transparent area formation region, and the pixel definition layer is made of a black light-shielding material.

[0034] Through a patterning process, a first opening area is created on the pixel definition layer. The first opening is used to expose the third light-transmitting part of the transparent area forming area. Each side of the third light-transmitting part is a part of a circle, so that the area enclosed by the multiple third light-transmitting parts is circular.

[0035] A second opening area is created on the pixel definition layer using a patterning process. The second opening area is located in the non-transparent area formation area.

[0036] A light-emitting functional layer is formed in the second opening region;

[0037] A second electrode layer is formed on the light-emitting functional layer, and the second electrode layer is located in the non-transparent area;

[0038] An encapsulation layer is formed on the second electrode layer, and the orthographic projection of the encapsulation layer on the substrate covers the transparent area formation area and the non-transparent area formation area.

[0039] The beneficial effects of this invention are as follows: The transparent display panel provided by this invention has the light-shielding layer, which includes a first region located in the transparent area and a second region located in the non-transparent area; the first region is configured as an opening to form a first light-transmitting portion for exposing the transparent area, and each side of the first light-transmitting portion is a portion of a circle, so that the second region surrounded by a plurality of the first light-transmitting portions is circular. This makes the diffraction pattern of external light on the transparent display panel circular, avoiding the occurrence of strong diffracted light in certain directions and improving the display effect. Attached Figure Description

[0040] Figure 1 A schematic diagram illustrating the state of strong diffraction in certain directions in related technologies;

[0041] Figure 2 This diagram illustrates a transparent display panel in related technologies.

[0042] Figure 3 A schematic diagram illustrating a transparent display panel in an embodiment of the present invention;

[0043] Figure 4 A schematic diagram showing the black matrix layer in an embodiment of the present invention;

[0044] Figure 5 A cross-sectional schematic diagram showing the transparent display panel in an embodiment of the present invention;

[0045] Figure 6 A schematic diagram illustrating the diffraction pattern of the transparent display panel in an embodiment of the present invention;

[0046] Figure 7 A schematic diagram illustrating the pixel definition layer in an embodiment of the present invention;

[0047] Figure 8 A cross-sectional schematic diagram showing the transparent display panel in an embodiment of the present invention;

[0048] Figure 9 This is a schematic diagram illustrating the black matrix layer in an embodiment of the present invention. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0050] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “including,” “comprising,” or “containing,” and similar terms mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The terms “connected,” “linked,” or similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0051] The features such as "parallel," "perpendicular," and "identical" used in the embodiments of this disclosure include features in the strict sense of "parallel," "perpendicular," and "identical," as well as cases where "approximately parallel," "approximately perpendicular," and "approximately identical" include certain tolerances. Taking into account the measurement and the tolerances associated with the measurement of a specific quantity (e.g., limitations of the measurement system), they represent the acceptable deviation range for a specific value as determined by a person skilled in the art. For example, "approximately" can mean within one or more standard deviations, or within 3% or 5% of said value.

[0052] Figure 1 This is a schematic diagram showing the occurrence of local diffraction. Figure 2 This is a schematic diagram of a transparent display panel in related technologies. The transparent display panel includes a display area 100 and a wiring area 300. The area outside the display area 100 and the wiring area 300 is the transparent area. Because the transparent display has an opening area (i.e., the transparent area), the size of which meets the diffraction conditions, and because the opening area is not circular, strong diffraction will occur in certain directions, causing a deterioration in display effect, or even making it impossible to read the content of the display screen normally. Figure 1 Strong diffraction occurs in both the horizontal and vertical directions.

[0053] refer to Figures 3-8 To address the aforementioned issues, this embodiment provides a transparent display panel, including a transparent area 10 and a non-transparent area 20. The transparent display panel includes a transparent substrate 1 and a light-shielding layer disposed on the transparent substrate 1. The light-shielding layer includes a first region located in the transparent area 10 and a second region located in the non-transparent area 20.

[0054] The first region is configured as an opening area to form a first light-transmitting portion 2001 for exposing the transparent area 10, and the second region includes at least one circular area.

[0055] In this embodiment, a light-shielding layer is provided on the transparent display panel, and the light-shielding layer is patterned to construct a first region located in the transparent area 10 as an opening region, thereby forming a first light-transmitting portion 2001 for exposing the transparent area 10. Furthermore, the formation of the first region ensures that the second region includes at least one circular region. According to the Babinski principle of optics, under illumination from a point light source, the diffraction pattern produced by an opaque object is identical to the diffraction pattern produced by a diffraction screen with an aperture of the same shape and size as the object. That is, the diffraction patterns produced by the circular aperture and the circular screen are both a set of concentric rings. This embodiment utilizes this principle to ensure that external light illuminating the transparent display panel undergoes diffraction, producing a diffraction pattern of a set of concentric rings. Figure 6 To achieve diffraction using the transparent display panel in this embodiment, the corresponding diffraction pattern is a set of circular rings. Relative to... Figure 1 The diffraction pattern clearly shows strong diffraction light in both the horizontal and vertical directions, indicating a significant improvement. In this embodiment, the light-shielding layer ensures that the non-transparent area 20 includes at least one circular area, thus forming at least one circular screen. (Refer to...) Figure 3 Each circular screen produces a diffraction pattern consisting of a set of concentric rings, preventing strong diffraction in certain directions and ensuring uniform emission of diffracted light from all directions. Figure 1 The diffracted light is reduced in intensity, improving the display effect and avoiding problems such as the inability to read the content of the display screen.

[0056] It should be noted that, compared to a transparent display panel without a light-shielding layer, the reflectivity is relatively high. The reflectivity mainly originates from the cathode portion (the pixel structure includes the anode, cathode, and a light-emitting functional layer located between the anode and cathode). For transparent display panels without a light-shielding layer, a polarizer is typically added to reduce reflectivity. However, adding a polarizer reduces the reflectivity of external light and also reduces the pixel transmittance. In this embodiment, the light-shielding layer improves the problem of localized strong diffraction light and reduces reflectivity while maintaining transmittance.

[0057] In an exemplary embodiment, two adjacent circular areas are arranged tangentially, that is, two adjacent circular areas are connected. The first light-transmitting part 2001 includes a plurality of sub-light-transmitting parts, each of which has a side that is part of a circle. Figure 3 , Figure 4 and Figure 7In the second region, there are four circular areas. The first light-transmitting part 2001 located between the four circular areas includes four arc-shaped edges, each arc-shaped edge being a part of the edge of the corresponding circular area.

[0058] In an exemplary embodiment, two adjacent circular areas are spaced apart.

[0059] refer to Figure 3 , Figure 4 and Figure 7 In an exemplary embodiment, the transparent display panel includes at least one display area 100 located in the non-transparent area 20. At least one display area 100 is provided in a one-to-one correspondence with at least one circular area. An opening is provided in at least one circular area to form a second light-transmitting portion 2002 for exposing the corresponding display area 100.

[0060] The second light-transmitting part 2002 is configured to allow the display area 100 to emit light and display normally. However, it should be noted that the second light-transmitting part 2002 is located in the non-transparent area 20. The second light-transmitting part 2002 is configured to transmit light emitted from the pixels within the display panel for display. It is opaque to external light (the pixel structure is directly opposite the second light-transmitting part 2002, which serves to block external light). That is, for external light, the non-transparent area 20 includes at least one solid circular blocking screen.

[0061] It should be noted that the second light-transmitting part 2002 is located within the corresponding circular area, and the area of ​​the second light-transmitting part 2002 is smaller than the area of ​​the circular area, ensuring that the non-transparent area 20 includes at least one circular area, and ensuring that the diffraction pattern generated by external light irradiating the display panel is a ring.

[0062] refer to Figures 3-5 , Figures 7-8 In an exemplary embodiment, the circular area includes a blocking portion 2003 located outside the second light-transmitting portion 2002, and two adjacent circular areas are tangentially arranged.

[0063] The transparent display panel also includes a wiring area 30 located on the periphery of the display area, and the orthographic projection of the wiring area 30 on the light-shielding layer is located within the shielding portion 2003.

[0064] With the above solution, the wiring area 30 is completely blocked by the shielding part 2003. Thus, the arrangement of the wiring area 30 does not affect the shape of the non-transparent area 20, meaning the non-transparent area 20 includes at least one circle. In this case, the material of the wiring within the wiring area 30 is not limited; it can be made of transparent or opaque material, offering a wide range of choices.

[0065] The wiring area 300 is equipped with various signal lines, such as power signal lines and data signal lines.

[0066] It should be noted that the shape of the wiring area 300 is not limited, as long as it is located within the shielding range of the shielding part 2003.

[0067] refer to Figure 3 In an exemplary embodiment, the wiring area 300 includes a first wiring area 301 disposed along a first direction and a second wiring area 302 disposed along a second direction, wherein the first wiring area 301 and the second wiring area 302 are disposed intersecting.

[0068] For example, the pixel layer includes at least one pixel region, and each pixel region includes the red sub-pixel, the blue sub-pixel, and the green sub-pixel. The first direction is the row direction of the pixel region arrangement, and the second direction is the column direction of the pixel region arrangement. The first direction and the second direction are perpendicular to each other, but are not limited thereto.

[0069] refer to Figure 9 In an exemplary embodiment, two adjacent circular areas are spaced apart.

[0070] The transparent display panel also includes a wiring area 30 located on the periphery of the display area, and a portion of the wiring area 30 (including a first wiring area 301 and a second wiring area 302) is exposed outside the circular area. (It should be noted that...) Figure 9 The location of the trace area is indicated by straight lines, but in reality, the portion of the trace area exposed outside the circular area is located in the transparent area (it is transparent and the lines are not visible). That is, part of the trace area is located in the transparent area 10, and part of the trace area 30 is located in the non-transparent area 20. In order not to affect the shape of the non-transparent area 20, the traces located within the trace area 30 are made of transparent material. In some embodiments, the trace area includes a first portion located in the transparent area and a second portion located in the non-transparent area, and at least the traces located in the first portion are made of transparent material.

[0071] It should be noted that, Figure 9 The diagram shows a black matrix layer when it is used as a light-shielding layer. When a pixel definition layer is used as a light-shielding layer, the shapes of the transparent and opaque areas are the same as those of the transparent and opaque areas in the light-shielding layer.

[0072] refer to Figure 4 and Figure 5 , Figure 5 for Figure 4A partial cross-sectional schematic diagram. In an exemplary embodiment, a display functional layer and an encapsulation layer 5 are stacked on the transparent substrate 1, and a black matrix layer 200 is disposed on the encapsulation layer 5, the black matrix layer 200 forming the light-shielding layer.

[0073] In an exemplary embodiment, an OC planarization layer is provided on the side of the black matrix layer 200 away from the transparent substrate 1.

[0074] refer to Figure 7 and Figure 8 , Figure 8 for Figure 7 A partial cross-sectional schematic diagram. In an exemplary embodiment, a display functional layer is disposed on the transparent substrate 1. The display functional layer includes a driving circuit layer and a pixel layer stacked together. The pixel layer includes a pixel definition layer 4 for defining a plurality of sub-pixels, and the pixel definition layer 4 forms the light-shielding layer.

[0075] The pixel definition layer 4 is made of black light-blocking material to form the light-blocking layer, so as not to change the original layer structure of the transparent display panel and not to increase the thickness of the transparent display panel.

[0076] It should be noted that in some embodiments, at least one of the black matrix layer and the pixel definition layer 4 forms the light-shielding layer. That is, the black matrix layer and the light-shielding layer can serve as the light-shielding layer independently. For example, when the pixel definition layer 4 forms the light-shielding layer, the black matrix layer can be omitted. When the black matrix layer forms the light-shielding layer, the pixel definition layer is located in the non-transparent area and only serves to define multiple sub-pixels, without needing to perform the related functions of the light-shielding layer. In some embodiments, the pixel definition layer 4 and the black matrix layer jointly form the light-shielding layer, and the shape of the portion of the pixel definition layer 4 corresponding to the transparent area is the same as the shape of the first light-transmitting portion of the black matrix layer corresponding to the transparent area.

[0077] When fabricating the pixel definition layer 4, a prefabricated layer that completely covers the transparent substrate 1 can be formed first on the transparent substrate 1. Then, a first opening 41 and a second opening 42 are set through a patterning process. The first opening 41 is used to set the pixel opening of the sub-pixel, and the second opening is used to expose the transparent area 10.

[0078] It should be noted that, in Figure 7 and Figure 8 The diagram only shows one pixel opening. When the transparent display panel includes multiple pixels, the first opening 41 includes multiple sub-openings.

[0079] For example, the plurality of said sub-pixels includes red sub-pixels, blue sub-pixels, and green sub-pixels, but is not limited thereto.

[0080] For example, the pixel layer includes at least one pixel region, and each pixel region includes the red sub-pixel, the blue sub-pixel, and the green sub-pixel. That is, the red sub-pixel, the blue sub-pixel, and the green sub-pixel are a pixel repeating unit, and multiple pixel repeating units are arranged in rows and columns to form the pixel arrangement structure of the transparent display panel.

[0081] For example, the red sub-pixel, the blue sub-pixel, and the green sub-pixel within the same pixel area can be arranged along a first direction, and multiple pixel areas can be arranged along the first direction to form a pixel row, and arranged along a second direction perpendicular to the first direction to form a pixel column, but this is not a limitation.

[0082] In an exemplary embodiment, the display function layer includes a driving circuit layer and a pixel layer stacked together. The pixel layer includes a pixel definition layer 4 for defining a plurality of sub-pixels. The driving circuit layer includes a plurality of transistors, which provide driving signals to the corresponding sub-pixels.

[0083] For example, the plurality of transistors include driving transistors and switching transistors. Each transistor includes an active layer, a gate, a source, and a drain, and can be a top-gate structure or a bottom-gate structure. The transistor structure can be the same as that of thin-film transistors in related technologies.

[0084] Taking a top-gate thin-film transistor as an example, a thin-film transistor may include an active layer, a gate insulating layer, a gate electrode, and source / drain metal layers, wherein:

[0085] An active layer is disposed on one side of a transparent substrate 1. The material of the active layer can be polycrystalline silicon, amorphous silicon, etc., and the active layer may include a channel region and two doped regions of different doping types located on both sides of the channel region.

[0086] The gate insulating layer can cover the active layer and the transparent substrate 1, and the material of the gate insulating layer is an insulating material such as silicon oxide.

[0087] The gate is disposed on the side of the gate insulating layer away from the transparent substrate 1 and is directly opposite the active layer. That is, the projection of the gate on the transparent substrate 1 is located within the projection range of the active layer on the transparent substrate 1. For example, the projection of the gate on the transparent substrate 1 coincides with the projection of the channel region of the active layer on the transparent substrate 1.

[0088] The thin-film transistor also includes an interlayer insulating layer that covers the gate and gate insulating layers. The thin-film transistor also includes an interlayer dielectric layer disposed on the side of the interlayer insulating layer away from the transparent substrate 1. Both the interlayer insulating layer and the interlayer dielectric layer are insulating materials, but the materials of the interlayer insulating layer and the interlayer dielectric layer can be different.

[0089] The source / drain metal layer may include a first source / drain metal layer, which is disposed on the surface of the interlayer dielectric layer away from the transparent substrate 1. The first source / drain metal layer includes a source and a drain, which are connected to the active layer. For example, the source and drain are respectively connected to two doped regions of the corresponding active layer through vias.

[0090] refer to Figure 5 and Figure 8 For example, the sub-pixel includes an OLED light-emitting device, and the OLED light-emitting device is stacked with a first electrode layer 6, a light-emitting functional layer 7, and a second electrode layer 8.

[0091] The driving circuit layer includes a switching transistor, a driving transistor, and a storage capacitor (i.e., the pixel driving circuit adopts a 2T1C structure). Taking this as an example, the driving circuit layer includes a switching transistor, a driving transistor, and a storage capacitor.

[0092] The driving circuit layer includes a scan signal line GL and a data signal line DL. A switching transistor is connected to both the scan signal line GL and the data signal line DL. The scan signal line GL transmits the scan signal, and the data signal line DL transmits the data signal. When the switching transistor is on, it can transmit the data signal to the driving transistor under the control of the scan signal. A storage capacitor Cst is connected to the high-level voltage line Vdd and the switching transistor, storing the voltage difference between the switching transistor and the high-level voltage line Vdd. The driving transistor is connected to the high-level voltage line Vdd and the storage capacitor Cst. When the switching transistor is off, the storage capacitor Cst provides a stable voltage to the driving transistor, turning it on. The driving transistor controls the driving current flowing from the high-level voltage line Vdd to the OLED light-emitting device based on the voltage value of the storage capacitor Cst, causing the OLED light-emitting device to emit light with a preset brightness value according to the driving current.

[0093] In an exemplary embodiment, the display function layer includes a pixel layer, the pixel layer further includes a pixel definition layer 4 and a plurality of sub-pixels, the pixel definition layer 4 is provided with a plurality of pixel openings (i.e., first openings 41), the sub-pixels are disposed within the pixel openings, and the sub-pixels include a first electrode layer 6, a light-emitting function layer 7 and a second electrode layer 8 stacked together, the first electrode layer 6 being connected to the transistor (driving transistor).

[0094] The first electrode layer 6 can be an anode, and the second electrode layer 8 can be a cathode. The light-emitting functional layer 7 may include an electron injection layer, an electron transport layer, a light-emitting layer, a hole transport layer, and a hole injection layer stacked together in the direction from the second electrode layer 8 to the first electrode layer 6. The cathode can generate electrons under the influence of current, and these electrons are transported to the light-emitting layer through the electron injection layer and the electron transport layer. The anode can generate holes under the influence of current, and these holes are transported to the light-emitting layer through the hole injection layer and the hole transport layer. Holes and electrons can combine in the light-emitting layer to emit light. Of course, the light-emitting functional layer 7 can also adopt other structures, as long as it can cooperate with the first electrode layer 6 and the second electrode layer 8 to emit light.

[0095] In an exemplary embodiment, a buffer layer 2, a driving circuit layer, a planarization layer 3, a pixel layer and an encapsulation layer 5 are sequentially stacked on the transparent substrate 1, wherein the driving circuit layer and the pixel layer are located in the non-transparent area 20.

[0096] This invention also provides a transparent display device, including the transparent display panel described above.

[0097] This invention also provides a method for manufacturing a transparent display panel, used to manufacture the aforementioned transparent display panel, the method comprising:

[0098] A transparent substrate 1 is provided, the transparent substrate 1 having a transparent region 10 forming region and a non-transparent region 20 forming region;

[0099] A buffer layer 2 is formed on the transparent substrate 1;

[0100] A driving circuit layer is formed on the portion of the buffer layer 2 located in the non-transparent area 20 forming area;

[0101] A planarization layer 3 is formed on the driving circuit layer, and the orthogonal projection of the planarization layer 3 on the transparent substrate 1 covers the transparent region 10 formation region and the non-transparent region 20 formation region.

[0102] A pixel layer is formed on the portion of the flat layer 3 located in the non-transparent area 20 forming area;

[0103] An encapsulation layer 5 is formed on the pixel layer, and the orthogonal projection of the encapsulation layer 5 on the transparent substrate 1 covers the transparent area 10 formation area and the non-transparent area 20 formation area.

[0104] A light-shielding layer is formed on the encapsulation layer 5;

[0105] Through a patterning process, an opening area is created on the light-shielding layer to form a first light-transmitting portion 2001 for exposing the transparent area 10 forming area. Each side of the first light-transmitting portion 2001 is part of a circle, so that the area enclosed by the plurality of first light-transmitting portions 2001 is circular.

[0106] For example, the first light-transmitting part 2001 and the second light-transmitting part 2002 can be formed by setting an opening area on the light-shielding layer through a synchronous patterning process, or the first light-transmitting part 2001 and the second light-transmitting part 2002 can be formed respectively through different patterning processes.

[0107] The present invention also provides a method for manufacturing a transparent display panel, for manufacturing the above-mentioned transparent display panel, the method comprising:

[0108] A transparent substrate 1 is provided, the transparent substrate 1 having a transparent region 10 forming region and a non-transparent region 20 forming region;

[0109] A buffer layer 2 is formed on the transparent substrate 1;

[0110] A driving circuit layer is formed on the portion of the buffer layer 2 located in the non-transparent area 20 forming area;

[0111] A planarization layer 3 (PLN) is formed on the driving circuit layer, and the orthographic projection of the planarization layer 3 on the transparent substrate 1 covers the transparent region 10 formation region and the non-transparent region 20 formation region;

[0112] A first electrode layer 6 and a pixel definition layer 4 are sequentially stacked on the portion of the flat layer 3 located in the non-transparent region 20 forming area. The pixel definition layer 4 is made of black light-shielding material.

[0113] Through the patterning process, a first opening area is opened on the pixel definition layer 4. The first opening is used to expose the third light-transmitting part of the transparent area 10 forming area. Each side of the third light-transmitting part is a part of a circle, so that the area surrounded by the multiple third light-transmitting parts is a circle.

[0114] Through a patterning process, a second opening area is created on the pixel definition layer 4, and the second opening area is located in the non-transparent area 20 forming area.

[0115] A light-emitting functional layer 7 is formed in the second opening region;

[0116] A second electrode layer 8 is formed on the light-emitting functional layer 7, and the second electrode layer 8 is located in the non-transparent area 20;

[0117] An encapsulation layer 5 is formed on the second electrode layer 8, and the orthographic projection of the encapsulation layer 5 on the transparent substrate 1 covers the transparent region 10 formation region and the non-transparent region 20 formation region.

[0118] The following points need to be explained:

[0119] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure. Other structures can be referred to the general design.

[0120] (2) For clarity, the thickness of layers or regions is enlarged or reduced in the drawings used to describe embodiments of the present disclosure, i.e., these drawings are not drawn to actual scale. It will be understood that when an element such as a layer, film, region or substrate is referred to as being “above” or “below” another element, the element may be “directly” located “above” or “below” the other element or there may be intermediate elements.

[0121] (3) Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0122] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A transparent display panel, characterized in that, The transparent display panel includes a transparent area and a non-transparent area. The transparent display panel includes a transparent substrate and a light-shielding layer disposed on the transparent substrate. The light-shielding layer includes a first region located in the transparent area and a second region located in the non-transparent area. The first region is configured as an opening to form a first light-transmitting portion for exposing the transparent region, and the second region includes at least one circular region; The two adjacent circular areas are arranged tangentially, and the first light-transmitting part includes a plurality of sub-light-transmitting parts, each side of which is a part of a circle; wherein, the circular areas in two adjacent rows are arranged vertically in correspondence.

2. The transparent display panel according to claim 1, characterized in that, The transparent display panel includes at least one display area located in the non-transparent area, and an opening is provided in at least one of the circular areas to form a second light-transmitting portion for exposing the corresponding display area.

3. The transparent display panel according to claim 2, characterized in that, The circular area includes a blocking portion located outside the second light-transmitting portion, and two adjacent circular areas are tangentially arranged. The transparent display panel also includes a wiring area located around the periphery of the display area, and the orthographic projection of the wiring area on the light-shielding layer is located within the shielding portion.

4. The transparent display panel according to claim 2, characterized in that, Adjacent circular areas are spaced apart; The transparent display panel also includes a wiring area located around the display area, with a portion of the wiring area located within the transparent area, and the wiring within the wiring area being made of a transparent material.

5. The transparent display panel according to claim 1, characterized in that, A display functional layer and an encapsulation layer are stacked on the transparent substrate. A black matrix layer is disposed on the encapsulation layer, and the black matrix layer forms the light-shielding layer.

6. The transparent display panel according to claim 1, characterized in that, A display function layer is disposed on the transparent substrate. The display function layer includes a driving circuit layer and a pixel layer stacked together. The pixel layer includes a pixel definition layer for defining multiple sub-pixels. The pixel definition layer forms the light-shielding layer.

7. The transparent display panel according to claim 6, characterized in that, The display function layer includes a pixel layer, which further includes a pixel definition layer and multiple sub-pixels. The pixel definition layer is provided with multiple pixel openings, and the sub-pixels are disposed within the pixel openings. Each sub-pixel includes a first electrode layer, a light-emitting function layer, and a second electrode layer stacked together.

8. The transparent display panel according to claim 6, characterized in that, A buffer layer, a driving circuit layer, a planarization layer, a pixel layer, and an encapsulation layer are sequentially stacked on the transparent substrate, wherein the driving circuit layer and the pixel layer are located in the non-transparent area.

9. A transparent display device, characterized in that, Includes the transparent display panel as described in any one of claims 1-8.

10. A method for manufacturing a transparent display panel, characterized in that, The method for manufacturing a transparent display panel according to any one of claims 1-8 comprises: A transparent substrate is provided, the transparent substrate having a transparent region forming region and a non-transparent region forming region; A buffer layer is formed on the transparent substrate. A driving circuit layer is formed on the portion of the buffer layer located in the non-transparent area formation region; A planarization layer is formed on the driving circuit layer, and the orthogonal projection of the planarization layer on the substrate covers the transparent area formation area and the non-transparent area formation area. A pixel layer is formed on the portion of the flat layer located in the non-transparent area formation region; An encapsulation layer is formed on the pixel layer, and the orthographic projection of the encapsulation layer on the substrate covers the transparent area formation area and the non-transparent area formation area. A light-shielding layer is formed on the encapsulation layer; Through a patterning process, an opening area is created on the light-shielding layer to form a first light-transmitting portion for exposing the transparent area forming area. Each side of the first light-transmitting portion is part of a circle, so that the area enclosed by a plurality of the first light-transmitting portions is circular.

11. A method for manufacturing a transparent display panel, characterized in that, The method for manufacturing a transparent display panel according to any one of claims 1-8 comprises: A transparent substrate is provided, the transparent substrate having a transparent region forming region and a non-transparent region forming region; A buffer layer is formed on the transparent substrate. A driving circuit layer is formed on the portion of the buffer layer located in the non-transparent area formation region; A planarization layer is formed on the driving circuit layer, and the orthogonal projection of the planarization layer on the substrate covers the transparent area formation area and the non-transparent area formation area. A first electrode layer and a pixel definition layer are sequentially stacked on the portion of the flat layer located in the non-transparent area formation region, and the pixel definition layer is made of a black light-shielding material. Through a patterning process, a first opening area is created on the pixel definition layer. The first opening is used to expose the third light-transmitting part of the transparent area forming area. Each side of the third light-transmitting part is a part of a circle, so that the area enclosed by the multiple third light-transmitting parts is circular. A second opening area is created on the pixel definition layer using a patterning process. The second opening area is located in the non-transparent area formation area. A light-emitting functional layer is formed in the second opening region; A second electrode layer is formed on the light-emitting functional layer, and the second electrode layer is located in the non-transparent area; An encapsulation layer is formed on the second electrode layer, and the orthogonal projection of the encapsulation layer on the substrate covers the transparent area formation area and the non-transparent area formation area.

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