Patent Publication Number: US-2022223675-A1

Title: Window and transparent display device

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims the priority benefit of China patent application serial no. 202110043928.8, filed on Jan. 13, 2021. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification. 
     BACKGROUND 
     Technical Field 
     The disclosure relates to a window and a display device, and in particular, relates to a window and a transparent display device. 
     Description of Related Art 
     As applications of electronic devices continue to expand, development of display technology changes rapidly. The electronic devices are thus required to provide improved structures and enhanced quality in order to satisfy expanded application needs and users&#39; habits and demands, and the electronic devices are thus faced with different problems. Therefore, research and development of the electronic devices have to be continuously updated and adjusted. 
     SUMMARY 
     The disclosure is directed to a window exhibiting good structural reliability or display quality. 
     The disclosure is directed to a transparent display device exhibiting good structural reliability or display quality. 
     According to an embodiment of the disclosure, a window includes a transparent display panel, a transparent substrate, and an ultraviolet light shielding layer. The transparent substrate is disposed on the transparent display panel. The ultraviolet light shielding layer is disposed on the transparent display panel. 
     According to an embodiment of the disclosure, the window includes a transparent substrate, a transparent display panel, and an ultraviolet light shielding layer. The transparent display panel is disposed on one side of the transparent substrate. The ultraviolet light shielding layer is disposed on another side of the transparent display panel. 
     According to an embodiment of the disclosure, the transparent display device includes a transparent display panel and an ultraviolet light shielding layer. The ultraviolet light shielding layer is fixed on one side of the transparent display panel. 
     Based on the above, in the window or the transparent display device according to an embodiment of the disclosure, since the ultraviolet light shielding layer is completely overlapped with an active region of the transparent display panel and the ultraviolet light shielding layer may be completely located between an ambient light source and the transparent display panel, ultraviolet light in the incident light irradiated to the transparent display panel and the active region thereof may be reduced. In this way, deterioration of the transparent display panel and the electronic components in the active region thereof caused by irradiation of ultraviolet light may be reduced. Therefore, the structural reliability or display quality of the transparent display panel may be improved. The window or the transparent display device may exhibit good structural reliability or display quality. 
     To make the aforementioned more comprehensible, several embodiments accompanied with drawings are described in detail as follows. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the disclosure and, together with the description, serve to explain the principles of the disclosure. 
         FIG. 1  is a schematic cross-sectional view of an example provided by the disclosure. 
         FIG. 2  is a schematic diagram of radiation intensity of a blocked waveband of an ultraviolet light shielding layer according to an embodiment of the disclosure. 
         FIG. 3  is a schematic cross-sectional view of a window according to another embodiment of the disclosure. 
         FIG. 4  is a schematic cross-sectional view of a window according to another embodiment of the disclosure. 
         FIG. 5  is a schematic cross-sectional view of a window according to another embodiment of the disclosure. 
         FIG. 6  is a schematic cross-sectional view of a window according to another embodiment of the disclosure. 
         FIG. 7A  is a schematic cross-sectional view of a window according to another embodiment of the disclosure. 
         FIG. 7B  is a schematic cross-sectional view of a transparent display panel and a transparency adjustable panel of  FIG. 7A . 
         FIG. 8  is a schematic cross-sectional view of a transparent display device according to an embodiment of the disclosure. 
         FIG. 9  is a schematic cross-sectional view of a transparent display device according to another embodiment of the disclosure. 
         FIG. 10  is a schematic cross-sectional view of a transparent display device according to another embodiment of the disclosure. 
         FIG. 11A  is a schematic top view of a vehicle window according to an embodiment of the disclosure. 
         FIG. 11B  is a schematic cross-sectional view of the vehicle window of  FIG. 11A  along a section line A-A′. 
         FIG. 12  is a schematic cross-sectional view of a window according to still another embodiment of the disclosure. 
         FIG. 13  is a schematic cross-sectional view of a window according to still another embodiment of the disclosure. 
     
    
    
     DESCRIPTION OF THE EMBODIMENTS 
     The disclosure may be understood by referring to the following detailed description in collaboration with the accompanying drawings. It should be noted that, in order to make it easy for readers to understand and to simplify the drawings, only a part of an electronic device is drawn in the drawings of the disclosure, and the specific elements in the drawings are not drawn according to actual scales. In addition, the number and size of each element in the figure are only illustrative, and are not used to limit the scope of the disclosure. 
     Certain terms are used throughout the specification of the disclosure and the appended claims to refer to specific components. Those skilled in the art should understand that electronic device manufacturers may probably use different names to refer to the same components. This specification is not intended to distinguish between components that have the same function but different names. In the following specification and claims, the terms “containing”, “including”, “having”, etc., are open terms, so that they should be interpreted as meaning of “including but not limited to . . . ”. Therefore, when the terms “including”, “containing”, and/or “having” are used in the description of the disclosure, they specify existence of corresponding features, regions, steps, operations, and/or components, but do not exclude existence of one or more corresponding features, regions, steps, operations, and/or components. 
     Directional terminology mentioned in the specification, such as “top”, “bottom”, “front”, “back”, “left”, “right”, etc., is used with reference to the orientation of the figures being described. Therefore, the used directional terminology is only illustrative, and is not intended to be limiting of the disclosure. In the figures, the drawings illustrate general characteristics of methods, structures, and/or materials used in specific embodiments. However, these drawings should not be construed as defining or limiting of a scope or nature covered by these embodiments. For example, for clarity&#39;s sake, a relative size, a thickness and a location of each film layer, area and/or structure may be reduced or enlarged. 
     It should be understood that when a component or film layer is referred to as being “connected to” another component or film layer, it may be directly connected to the another component or film layer, or there may be an intervening component or film layer there between. When a component is referred to as being “directly connected to” another component or film layer, there is no intervening component or film layer there between. In addition, when a component is referred to as being “coupled to another component (or a variant thereof)”, the component may be directly connected to the another component, or indirectly connected (for example, electrically connected) to the another component through one or more components. 
     In the disclosure, length and width may be measured by using an optical microscope, and thickness may be obtained by measuring a cross-sectional image in an electron microscope, but the disclosure is not limited thereto. Moreover, there may be a certain error in any two values or directions used for comparison. 
     The terms “about”, “substantially” or “approximately” mentioned herein generally represent falling within 20% of a given value or range, or represent falling within 10%, 5%, 3%, 2%, 1% or 0.5% of the given value or range. 
     In the disclosure, when one structure (or layer, component, substrate) is described to be located on another structure (or layer, component, substrate), it means that the two structures are adjacent and directly connected (or contacted), or means that the two structures are adjacent but not directly connected (or contacted). Indirect connection means that there is at least one intermediate structure (or intermediate layer, intermediate component, intermediate substrate, intermediate space) between the two structures, and a lower surface of one structure is adjacent or directly connected to an upper surface of the intermediate structure, and an upper surface of the other structure is adjacent or directly connected (or contacted) to a lower surface of the intermediate structure, and the intermediate structure may be composed of a single layer or multi-layer solid structure or non-solid structure, which is not limited by the disclosure. In the disclosure, when a certain structure is disposed “on” another structure, it probably means that the certain structure is “directly” on the another structure, or means that the certain structure is “indirectly” on the another structure, i.e., at least one structure is sandwiched between the certain structure and the another structure. 
     “First”, “second” . . . etc. in the specification of the disclosure may be used herein to describe various elements, components, regions, layers and/or parts, but these elements, components, regions, and/or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, the first “element”, “component”, “region”, “layer”, or “part” discussed below is used to distinguish with the second “element”, “component”, “region”, “layer”, or “part”, and is not used to limit a sequence or a specific element, component, region, layer and/or part. 
     An electronic device or a window may achieve a display effect through a transparent display device of an embodiment of the disclosure. The electronic device may include a display device, an antenna device, a sensing device, a splicing device or a transparent display device, but the disclosure is not limited thereto. The electronic device may be a rollable, stretchable, bendable or flexible electronic device. The electronic device may include, for example, liquid crystal, light-emitting diodes (LEDs), quantum dots (QDs), fluorescence, phosphor, or other suitable materials and the materials may be arbitrarily arranged and combined or other suitable display media, or combinations thereof; the LEDs may include, for example, organic light-emitting diodes (OLEDs), mini LEDs, micro LEDs or quantum dot (QD) LEDs (for example, QLEDs, or QDLEDs), but the disclosure is not limited thereto. The antenna device may be, for example, a liquid crystal antenna, but the disclosure is not limited thereto. The splicing device may be, for example, a display splicing device or an antenna splicing device, but the disclosure is not limited thereto. It should be noted that the electronic device may be any arrangement and combination of the foregoing, but the disclosure is not limited thereto. In addition, an appearance of the electronic device may be a rectangle, a circle, a polygon, a shape with curved edges, or other suitable shapes. The electronic device may have peripheral systems such as a driving system, a control system, a light source system, a rack system, etc., to support the display device, the antenna device or the splicing device. Hereinafter, a window or a transparent display device is used to describe the content of the disclosure, but the disclosure is not limited thereto. 
     In the disclosure, the various embodiments described below may be mixed and matched without departing from the spirit and scope of the disclosure. For example, some features of one embodiment may be combined with some features of another embodiment to form another embodiment. 
     Reference is now be made in detail to the exemplary embodiments of the disclosure, and examples of the exemplary embodiments are illustrated in the accompanying drawings. Whenever possible, the same component symbols are used in the drawings and descriptions to indicate the same or similar parts. 
       FIG. 1  is a schematic cross-sectional view of an example provided by the disclosure, and the example may be, for instance, a window. For clarity of the drawing and convenience of descriptions, several elements are omitted in  FIG. 1 .  FIG. 2  is a schematic diagram of radiation intensity of a blocked waveband of an ultraviolet light shielding layer according to an embodiment of the disclosure. Referring to  FIG. 1 , the window of the disclosure may include an electronic window with a display function or a transparent display device, but the disclosure is not limited thereto. In an embodiment of the disclosure, a window  10  includes a transparent display panel  200 , a transparent substrate  100 , and an ultraviolet light shielding layer  300 . The transparent substrate  100  is disposed on the transparent display panel  200 . The ultraviolet light shielding layer  300  is disposed on the transparent display panel  200 . The example of the disclosure is the window  10 , which may be applied to a display cabinet or a car window, but the disclosure is not limited thereto. For example, in the above embodiment, the glass of the window is, for example, disposed on a transparent display panel first, and then the glass of the window is installed in an outer frame of the window or a door frame of a vehicle body, but the disclosure is not limited thereto. In other embodiments, the glass of the window is first installed in the outer frame of the window or the door frame of the vehicle body, and then the transparent display panel is installed on the glass of the window, but the disclosure is not limited thereto. The aforementioned embodiments are provided for illustrative purposes only, and the disclosure is not intended to limit a manufacturing order or method of the window  10 . Those skilled in the art should understand that none of arranging the transparent display panel on the transparent substrate or arranging the transparent substrate on the transparent display panel deviates from the spirit of the disclosure. Under the above arrangement, the ultraviolet light shielding layer  300  may shield light with a specific wavelength in the ambient light, so as to reduce an amount of radiation of the light with the specific wavelength that enters the transparent display panel  200 . In this way, components in the transparent display panel  200  may be protected to reduce the risk of deterioration caused by irradiation of the light with the specific wavelength. Therefore, the window  10  or the transparent display panel  200  may exhibit good structural reliability or display quality. 
     Referring to  FIG. 1 , the window  10  includes a transparent substrate  100 . The transparent substrate  100  includes a rigid substrate, a flexible substrate, or a combination thereof. For example, the transparent substrate  100  includes glass, quartz, sapphire, acrylic resin, polycarbonate (PC), polyimide (PI), polyethylene terephthalate (PET), other suitable transparent materials, or a combination thereof, but the disclosure is not limited thereto. According to an embodiment of the disclosure, the transparent substrate  100  is, for example, glass used as a window. In some other embodiments, the transparent substrate  100  is, for example, glass used as a vehicle window, but the disclosure is not limited thereto. 
     The transparent substrate  100  includes two opposite sides. In a Z-axis direction (i.e., a normal direction of the transparent substrate  100 ), a second side  102  may be the side of the transparent substrate  100  away from an ambient light source LS. Namely, the second side  102  may face away from the ambient light source LS. In addition, a first side  101  may be the other side of the transparent substrate  100  relative to the second side  102 . Namely, the first side  101  may be the side of the transparent substrate  100  facing the ambient light source LS. In some embodiments, the ambient light source LS is, for example, sunlight, lamplight, or other possible light sources, but the disclosure is not limited thereto. The ambient light source LS may provide incident light L. The incident light L may include visible light, ultraviolet light, infrared light, or electromagnetic radiation of other wavelengths, but the disclosure is not limited thereto. The incident light L may be incident to the transparent substrate  100  from the first side  101  of the transparent substrate  100  along the Z-axis. In other embodiments, the incident light L may be emitted out from the second side  102  of the transparent substrate  100  along the Z-axis, but the disclosure is not limited thereto. The incident light L may be directional light or non-directional light. It should be noted that the incident light L shown in  FIG. 1  is, for example, incident to the transparent substrate  100  at an angle perpendicular to the first side  101  (i.e., an angle between the incident light L and the first side  101  is 90°) along the Z-axis, but the disclosure is not limited thereto. In other embodiments, the incident light L may be incident to the transparent substrate  100  substantially along the Z-axis. For example, the angle between the incident light L and the first side  101  may be between 0° and 90°. 
     The window  10  further includes the transparent display panel  200 . The transparent display panel  200  is, for example, a liquid crystal display panel, a micro LED display panel, a mini LED display panel, an OLED display panel, or a QDLED display panel, but the disclosure is not limited thereto. In some embodiments, the transparent display panel  200  is, for example, a display panel including a thin film transistor array (TFT array) substrate and LED elements, but the disclosure is not limited thereto. In some embodiments, the transparent display panel  200  has at least one active region PX, which is used as a display panel for displaying image frames. In the embodiment of the disclosure, the active region PX may be defined as a plurality of pixels with an image display function, or a display area containing the plurality of pixels with the image display function. In the embodiment, the active region PX is, for example, a display area with a display function. The transparent display panel  200  is briefly described in  FIG. 7B  in subsequent paragraphs. 
     In some embodiments, the transparent substrate  100  is disposed on the transparent display panel  200 . To be specific, the second side  102  of the transparent substrate  100  is disposed on the transparent display panel. In other embodiments, an adhesive layer  120  may be selectively disposed between the second side  102  of the transparent substrate  100  and the transparent display panel  200 . The adhesive layer  120  may include a material with adhesion. For example, the adhesive layer  120  may include an optical clear adhesive (OCA), an optical clear resin (OCR), a pressure sensitive adhesive (PSA), other suitable materials, a combination thereof, or other suitable adhesives or epoxy resins, but the disclosure is not limited thereto. 
     The window  10  further includes the ultraviolet light shielding layer  300 . The ultraviolet light shielding layer  300  is disposed on the transparent display panel  200 . In some embodiments, the ultraviolet light shielding layer  300  is located between the second side  102  of the transparent substrate  100  and the transparent display panel  200 . In some other embodiments, the ultraviolet light shielding layer  300  is located between the second side  102  of the transparent substrate  100  and the adhesive layer  120 , but the disclosure is not limited thereto. On the Z-axis, the ultraviolet light shielding layer  300  is completely overlapped with the active region PX of the transparent display panel  200 . Under the above arrangement, the ultraviolet light shielding layer  300  may be located between the transparent substrate  100  and the transparent display panel  200 . 
     The ultraviolet light shielding layer  300  may be formed by a material capable of reflecting or absorbing light of an ultraviolet light waveband. In other words, the ultraviolet light shielding layer  300  is a sheet-like or film-like structure made of a material that may shield the light of the ultraviolet light waveband. In some embodiments, the ultraviolet light shielding layer  300  may block light with a wavelength greater than or equal to 200 nanometers (nm) and less than or equal to 400 nm, or light with a wavelength greater than or equal to 300 nm and less than or equal to 400 nm. 
     Referring to  FIG. 2 ,  FIG. 2  is a diagram illustrating a relationship between light wavelengths and light energy intensities.  FIG. 2  illustrates a light energy intensity curve C 1  of the incident light L after passing through the ultraviolet light shielding layer  300  and a light energy intensity curve C 2  of the incident light L not passing through the ultraviolet light shielding layer  300 . In detail, ultraviolet light may be divided into several wavebands, for example, ultraviolet light A (UVA), ultraviolet light B (UVB) and ultraviolet light C (UVC). The waveband of UVA is 315 nm to 400 nm. The waveband of UVB is 280 nm to 315 nm. The waveband of UVC is 190 nm to 280 nm. In the aforementioned waveband shown in  FIG. 2  (for example, 200 nm to 400 nm), the light energy intensity curve C 2  of the incident light L not passing through the ultraviolet light shielding layer  300  may be about 1.5 W/m 2 /nm at a wavelength of 400 nm. The light energy intensity curve C 1  of the incident light L after passing through the ultraviolet light shielding layer  300  may be about 0.1 W/m 2 /nm at the wavelength of 400 nm. Namely, the light energy intensity curve C 1  may be approximately 10% (for example, 6%) of the light energy intensity curve C 2 . In other words, after the incident light L passes through the ultraviolet light shielding layer  300 , energy integration thereof at the ultraviolet light waveband (for example, 200 nm to 280 nm, 280 nm to 315 nm, or 315 nm to 400 nm) may be reduced by 90% or more. In other embodiments, after the incident light L passes through the ultraviolet light shielding layer  300 , the energy integration at the ultraviolet light waveband may be reduced by 30%, 50%, or 70% or more, but the disclosure is not limited thereto. In this way, the ultraviolet light shielding layer  300  of the embodiment of the disclosure may be used to block the ultraviolet light with the wavelength greater than or equal to 300 nm and less than or equal to 400 nm. 
     In some embodiments, a Young&#39;s modulus of the ultraviolet light shielding layer  300  may be greater than or equal to a Young&#39;s modulus of the transparent display panel  200 . Alternatively, a rigidity of the ultraviolet light shielding layer  300  may be greater than or equal to a rigidity of the transparent display panel  200 . In some other embodiments, a thickness of the ultraviolet light shielding layer  300  may be greater than or equal to a thickness of the transparent display panel  200 . The thickness of the ultraviolet light shielding layer  300  may be defined as the maximum thickness of the ultraviolet light shielding layer  300  on the Z-axis. The thickness of the transparent display panel  200  may be defined as the maximum thickness of the transparent display panel  200  on the Z-axis. Under the above arrangement, the ultraviolet light shielding layer  300  may be configured to support the transparent display panel  200 . In this way, the structural reliability of the transparent display panel  200  may be improved. The overall structural reliability of the window  10  may be improved. 
     It should be noted that on the Z-axis, the ultraviolet light shielding layer  300  is completely overlapped with the active region PX of the transparent display panel  200 , and the ultraviolet light shielding layer  300  is located between the transparent substrate  100  and the transparent display panel  200 . Under the above arrangement, the ultraviolet light shielding layer  300  may be completely located between the ambient light source LS and the transparent display panel  200 . In this way, the incident light L emitted from the ambient light source LS may enter the transparent substrate  100  from the first side  101 , and then enter and penetrate through the ultraviolet light shielding layer  300  from the second side  102 . An ultraviolet light wavelength (for example, a wavelength between 300 nm and 400 nm) of the incident light L passing through the ultraviolet light shielding layer  300  is blocked by the ultraviolet light shielding layer  300 . Therefore, the ultraviolet light in the incident light L irradiated to the transparent display panel  200  and the active region PX thereof may be reduced. In this way, deterioration of the transparent display panel  200  and the electronic components in the active region PX thereof, such as active components, light-emitting components, or other circuit components caused by irradiation of ultraviolet light may be reduced. Therefore, the structural quality or display quality of the transparent display panel  200  may be improved. In addition, the window  10  may exhibit good structural quality or display quality. 
     Other embodiments are provided below for further description. It should be noticed that reference numbers of the components and a part of contents of the aforementioned embodiment are also used in the following embodiment, wherein the same reference numbers denote the same or like components, and descriptions of the same technical contents are omitted. In addition, the same or similar components may be denoted by similar reference numerals, and details thereof are not repeated. The aforementioned embodiments may be referred for descriptions of the omitted parts, and detailed descriptions thereof are not repeated in the following embodiments. 
       FIG. 3  is a schematic cross-sectional view of a window according to another embodiment of the disclosure. For clarity of the drawing and convenience of descriptions, several elements are omitted in  FIG. 3 . A window  10 A of the embodiment is substantially similar to the window  10  of  FIG. 1 , so that the same and similar components in the two embodiments are not repeated. A main difference therebetween is that an ultraviolet light shielding layer  300 A may be disposed on one side of a transparent display panel  200 A. In some embodiments, the transparent display panel  200 A and the ultraviolet light shielding layer  300  disposed thereon may form a transparent display device, but the disclosure is not limited thereto. In detail, the ultraviolet light shielding layer  300 A may be disposed on the transparent display device  200 A. The transparent display device  200 A and the ultraviolet light shielding layer  300 A may be disposed on a second side  102 A of a transparent substrate  100 A. In some embodiments, an adhesive layer  120 A may also be selectively disposed on the second side  102 A to fix the ultraviolet light shielding layer  300 A to the second side  102 A, but the disclosure is not limited thereto. 
     In some embodiments, the ultraviolet light shielding layer  300 A is located between the second side  102 A of the transparent substrate  100 A and the transparent display panel  200 A, and the adhesive layer  120 A is located between the second side  102 A and the ultraviolet light shielding layer  300 A. In this way, the incident light L emitted by the ambient light source L facing the first side  101 A may pass through the ultraviolet light shielding layer  300 A after entering the transparent substrate  100 A. The incident light L passing through the ultraviolet light shielding layer  300 A may irradiate the transparent display panel  200 A. In this way, deterioration of the transparent display panel  200 A and the electronic components in the active region PX thereof (shown in  FIG. 1 ) caused by irradiation of ultraviolet light may be reduced. The window  10 A may exhibit good display quality. In addition, the ultraviolet light shielding layer  300 A fixed to the transparent display panel  200 A may be configured to support the transparent display panel  200 A. The window  10 A may also achieve excellent technical effects similar to that of the aforementioned embodiment, and structural reliability or display quality is thereby improved. 
       FIG. 4  is a schematic cross-sectional view of a window according to another embodiment of the disclosure. For clarity of the drawing and convenience of descriptions, several elements are omitted in  FIG. 4 . A window  10 B of the embodiment is substantially similar to the window  10 A of  FIG. 3 , so that the same and similar components in the two embodiments are not repeated. A main difference between the embodiment and the window  10 A is that a transparent substrate  100 B may be a substrate having a curved surface. The transparent substrate  100 B, for example, includes a first side  101 B facing the ambient light source LS and a second side  102 B opposite to the first side  101 B. In some embodiments, since a transparent display panel  200 B, an adhesive layer  120 B, and an ultraviolet light shielding layer  300 B may all include flexible materials, they may be attached to the second side  102 B of the transparent substrate  100   n . In the embodiment, the ultraviolet light shielding layer  300 B may be disposed between the second side  102 B of the transparent substrate  100 B and the transparent display panel  200 B. The adhesive layer  120 B may be disposed between the ultraviolet light shielding layer  300 B and the transparent display panel  200 B, but the disclosure is not limited thereto. In this way, the window  10 B may be curved. Under the above arrangement, the window  10 B may achieve similar effects as that of the aforementioned embodiments, and structural reliability or display quality is thereby improved. 
       FIG. 5  is a schematic cross-sectional view of a window according to another embodiment of the disclosure. For clarity of the drawing and convenience of descriptions, several elements are omitted in  FIG. 5 . A window  10 C of the embodiment is substantially similar to the window  10  of  FIG. 1 , so that the same and similar components in the two embodiments are not repeated. A main difference between the embodiment and the window  10  is that a transparent display panel  200 C may be disposed on one side of a transparent substrate  100 C and an ultraviolet light shielding layer  300 C may be disposed on the other side of the transparent substrate  100 C opposite to the above one side. For example, the transparent substrate  100 C has a second side  102 C away from the ambient light source LS and a first side  101 C opposite to the second side  102 C. The first side  101 C faces the ambient light source LS. The transparent display panel  200 C is disposed on the second side  102 C, and the ultraviolet light shielding layer  300 C is disposed on the first side  101 C. 
     In some embodiments, an adhesive layer  120 C may be selectively disposed on the second side  102 C. The adhesive layer  120 C is disposed between the transparent substrate  100 C and the transparent display panel  200 C. 
     Under the above arrangement, the ultraviolet light shielding layer  300 C is located between the ambient light source LS and the transparent display panel  200 C. In this way, deterioration of the transparent display panel  200 C and the electronic components therein caused by irradiation of ultraviolet light may be reduced. The window  10 C may also achieve excellent technical effects similar to that of the aforementioned embodiments, and structural reliability or display quality is thereby improved. 
       FIG. 6  is a schematic cross-sectional view of a window according to another embodiment of the disclosure. For clarity of the drawing and convenience of descriptions, several elements are omitted in  FIG. 6 . A window  10 D of the embodiment is substantially similar to the window  10  of  FIG. 1 , so that the same and similar components in the two embodiments are not repeated. A main difference between the embodiment and the window  10  is that the window  10 D further includes two ultraviolet light shielding layers  300 D- 1  and  300 D- 2 , and a transparent display panel  200 D is disposed between the ultraviolet light shielding layer  300 D- 1  and the ultraviolet light shielding layer  300 D- 2 . For example, the two ultraviolet light shielding layers include a first ultraviolet light shielding layer  300 D- 1  and a second ultraviolet light shielding layer  300 D- 2 . The transparent substrate  100 D includes a first side  101 D and a second side  102 D opposite to each other. The first ultraviolet light shielding layer  300 D- 1  is disposed between the second side  102 D of the transparent substrate  100 D and the transparent display panel  200 D. The second ultraviolet light shielding layer  300 D- 2  is disposed on one side of the transparent display panel  200 D away from the transparent substrate  100 D. In other words, the first ultraviolet light shielding layer  300 D- 1  and the second ultraviolet light shielding layer  300 D- 2  are located on opposite sides of the transparent display panel  200 D. 
     In some embodiments, an adhesive layer  120 D may be selectively disposed between the first ultraviolet light shielding layer  300 D- 1  and the transparent display panel  200 D, but the disclosure is not limited thereto. 
     Under the above arrangement, the transparent display panel  200 D is disposed between the first ultraviolet light shielding layer  300 D- 1  and the second ultraviolet light shielding layer  300 D- 2 . In this way, deterioration of the transparent display panel  200 D and the electronic components therein caused by irradiation of ultraviolet light may be reduced. The window  10 D may also achieve excellent technical effects similar to that of the aforementioned embodiments, and structural reliability or display quality is thereby improved. 
       FIG. 7A  is a schematic cross-sectional view of a window according to another embodiment of the disclosure.  FIG. 7B  is a schematic cross-sectional view of a transparent display panel and a transparency adjustable panel of  FIG. 7A . For clarity of the drawing and convenience of descriptions, several elements are omitted in  FIG. 7A  and  FIG. 7B . A window  10 E of the embodiment is substantially similar to the window  10  of  FIG. 1 , so that the same and similar components in the two embodiments are not repeated. A main difference between the embodiment and the window  10  is that the window  10 E further includes a transparency adjustable panel  2200 . The transparency adjustable panel  2200  is disposed between an ultraviolet light shielding layer  300 E and a transparent display panel  200 E. 
     In some embodiments, a transparent substrate  100 E includes a first side  101 E and a second side  102 E opposite to each other. The first side  101 E faces the ambient light source LS. The ultraviolet light shielding layer  300 E is disposed on the second side  102 E. The transparent display panel  200 E and the transparency adjustable panel  2200  are located on the second side  102 E. 
     In detail, the transparent display panel  200 E is, for example, a transparent display, which has a light penetration property and a display function. The transparent display panel  200 E is, for example, a display having an active array substrate and a light-emitting element  400 E. The structure of the transparent display panel  200 E is briefly described below with reference to  FIG. 7B . 
     The transparent display panel  200 E includes a substrate  2110 , a dielectric layer  2120 , a gate insulating layer GI, a dielectric layer  2130 , a dielectric layer  2140 , an encapsulation layer  2160 , a filling layer  2160 , and a passivation layer  2170  sequentially stacked on the Z-axis. The transparent display panel  200 E further includes an active device TFT and a light-emitting element  400 E. The substrate  2110  is, for example, a flexible support film, and a material thereof includes polyvinyl alcohol (PVA), polyvinyl chloride (PVC), polydimethylsiloxane (PDMS), polyethylene terephthalate (PET), poly (methyl methacrylate, PMMA), triacetate cellulose film (TAC) or other suitable materials, but the disclosure is not limited thereto. In some embodiments, a thickness of the substrate  2110  may be defined as the maximum thickness of the substrate  2110  in the Z-axis direction. The thickness of the substrate  2110  is, for example, 30 μm to 200 μm. 
     The dielectric layer  2120 , the gate insulating layer GI, the dielectric layer  2130 , and the dielectric layer  2140  may be a single-layer or multi-layer structure, and a material thereof is, for example, an insulating material, such as an organic material, an inorganic material, or a combination thereof. The organic material may include polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyethylene (PE), polyethersulfone (PES), polycarbonate (PC), polymethylmethacrylate (PMMA), polyimide (PI), photosensitive polyimide (PSPI) or a combination thereof, and the inorganic material may include silicon nitride, silicon oxide, silicon oxynitride, or a combination thereof, but the disclosure is not limited thereto. A thickness of the dielectric layer  2120 , the gate insulating layer GI, the dielectric layer  2130 , or the dielectric layer  2140  may be defined as: the maximum thickness of the dielectric layer  2120 , the gate insulating layer GI, the dielectric layer  2130  or the dielectric layer  2140  in the Z-axis direction. The thickness of each of the dielectric layer  2120 , the gate insulating layer GI, the dielectric layer  2130 , or the dielectric layer  2140  is, for example, 5 μm to 30 μm, but the disclosure is not limited thereto. A thickness formed by stacking the dielectric layer  2120 , the gate insulating layer GI, the dielectric layer  2130 , and the dielectric layer  2140  is, for example, less than 100 μm, but the disclosure is not limited thereto. 
     The active device TFT is disposed in a transparent display unit  2100 . For example, the active device TFT is disposed between the dielectric layer  2120  and the dielectric layer  2140 . The active device TFT may be composed of a semiconductor layer SE, a gate G, a source S and a drain D. The semiconductor layer SE is disposed on the dielectric layer  2120 . A material of the semiconductor layer SE is, for example, low temperature polysilicon (LTPS) or amorphous silicon, but the disclosure is not limited thereto. 
     The gate insulating layer GI is disposed on the semiconductor layer SE. The gate G is disposed on the gate insulating layer GI. A material of the gate G may include molybdenum (Mo), titanium (Ti), tantalum (Ta), niobium (Nb), hafnium (Hf), nickel (Ni), chromium (Cr), cobalt (Co), zirconium (Zr), tungsten (W), aluminum (Al), silver (Ag), aurum (Au) or others suitable metals, or alloys or combinations of the above materials, but the disclosure is not limited thereto. 
     The source S and the drain D are disposed on the dielectric layer  2130 . The source S and the drain D may be electrically connected to the semiconductor layer SE through vias of the dielectric layer  2130 . A material of the source S and the drain D may be similar to that of the gate G, so that detail thereof is not repeated. 
     The light-emitting element  400 E is disposed on the dielectric layer  2140  or located between the dielectric layer  2140  and the encapsulation layer  2160 . The light-emitting element  400 E is, for example, an electroluminescent LED, but the disclosure is not limited thereto. The light-emitting element  400 E may be an organic LED. The light-emitting element  400 E may be defined by a barrier structure  2150  disposed on the dielectric layer  2140 . For example, the light-emitting element  400 E may include a first electrode  410 , a second electrode  430 , and a light-emitting layer  420  located between the first electrode  410  and the second electrode  430 . The first electrode  410 , the light-emitting layer  420 , and the second electrode  430  may be located in the barrier structure  2150 . At least a part of the second electrode  430  may cover the barrier structure  2150 , but the disclosure is not limited thereto. The first electrode  410  may be electrically connected to the drain D, and a material thereof may be similar to that of the drain D, so that detail thereof is not repeated. A material of the second electrode  430  is, for example, a transparent conductive material, including indium-tin-oxide (ITO), but the disclosure is not limited thereto. The light-emitting layer  420  may be a multilayer structure, including a hole injection layer (HIL), a hole transfer layer (HTL), an emission layer (EL), and an electron transfer layer (ETL), but the disclosure is not limited thereto. The light-emitting layer  420  is, for example, a red organic light-emitting layer, a green organic light-emitting layer, a blue organic light-emitting layer, or a light-emitting layer of different colors generated by mixing light of various spectrums. 
     In other embodiments, the light-emitting element  400 E may also be a micro LED, a mini LED, or other suitable light-emitting diodes. In some other embodiments, the transparent display panel  200 E may be a transparent liquid crystal display, but the disclosure is not limited thereto. 
     In some embodiments, a user eye UE may be overlapped with the transparent display panel  200 E on the Z-axis. In other words, the user eye UE may receive image light emitted by the light-emitting layer  420 , so as to see an image pattern. 
     In some embodiments, the dielectric layer  2120 , the gate insulating layer GI, the dielectric layer  2130 , and the dielectric layer  2140  may be selectively provided with openings OP. The openings OP may be used to increase an aperture ratio of light penetration. In other words, the openings OP may help improving a light transmittance or transparency of the transparent display unit  2100 . In some other embodiments, the openings OP may not be provided in the dielectric layer  2120 , the gate insulating layer GI, the dielectric layer  2130 , and the dielectric layer  2140 . Under the above arrangement, the user eye UE may see the incident light L provided by the ambient light source LS. According to another aspect, the user may observe a scene on the first side  101  through the transparent display panel  200 E and the transparent substrate  100 E. 
     The encapsulation layer  2160  covers the barrier structure  2150 , the light-emitting element  400 E, and the dielectric layer  2140 . In some embodiments, the encapsulation layer  2150  may be filled in the openings OP, but the disclosure is not limited thereto. A material of the encapsulation layer  2160  includes epoxy or other suitable materials, which is not limited by the disclosure. 
     In some embodiments, a filling layer  2170  may be selectively disposed on the encapsulation layer  2160 . The filling layer  2170  may be filled into the opening OP, but the disclosure is not limited thereto. A material of the filling layer  2170  includes polyimide or other suitable materials, but the disclosure is not limited thereto. 
     The passivation layer  280  may be disposed on the encapsulation layer  2160  or the filling layer  2170 . The passivation layer  280  is, for example, made of a transparent material, including PVA, PVC, PDMS, PET, PMMA, TAC or other suitable materials, but the disclosure is not limited thereto. 
     The window  10 E further includes a transparency adjustable panel  2200 . The transparency adjustable panel  2200  is, for example, a liquid crystal panel capable of adjusting a light transmittance, but the disclosure is not limited thereto. In some embodiments, the transparency adjustable panel  2200  may be an electrochromism dimming panel. 
     For example, the transparency adjustable panel  2200  includes a substrate  2210 , a flexible substrate  2220 , a flexible substrate  2230 , and a substrate  2240  sequentially stacked on the Z-axis. The transparency adjustable panel  2200  further includes a liquid crystal layer LC disposed between the flexible substrate  2220  and the flexible substrate  2230 . A material of the substrate  2210  and the substrate  2240 , for example, includes PVA, PVC, PDMS, PET, PMMA, TAC, or other suitable materials, but the disclosure is not limited thereto. A thickness of the substrate  2210  and the substrate  2240  is, for example, 30 μm to 200 μm, but the disclosure is not limited thereto. 
     A material of the flexible substrate  2220  and the flexible substrate  2230  includes polyimide (PI), but the disclosure is not limited thereto. A thickness of the flexible substrate  2220  or the flexible substrate  2230  may be 5 μm to 30 μm. In other embodiments, the thickness of the flexible substrate  2220  or the flexible substrate  2230  may be less than 100 μm, but the disclosure is not limited thereto. 
     In some embodiments, at least the flexible substrate  2220  or the flexible substrate  2230  may be provided with conductive patterns or lines, but the disclosure is not limited thereto. An electric field may be generated between the conductive patterns or lines to drive liquid crystal molecules in the liquid crystal layer LC to rotate. 
     The liquid crystal layer LC includes a plurality of liquid crystal molecules. A material of the liquid crystal molecules includes dichroic dye liquid crystal (DDLC), polymer dispersed liquid crystal (PDLC), polymer network liquid crystal (PNLC), cholesteric liquid crystal (CLC), electrochromic (EC) or a suspended particle device (SPD), or other suitable materials, but the disclosure is not limited thereto. 
     Under the above arrangement, an electric field may be generated between the flexible substrate  2220  and the flexible substrate  2230  to rotate the plurality of liquid crystal molecules in the liquid crystal layer LC. Therefore, a degree of rotation of the liquid crystal molecules may be controlled by the electric field, so as to control a degree that the incident light L of the ambient light source LS penetrates through the transparency adjustable panel  2200 . In this way, the incident light L may have different grayscale brightness after passing through the transparency adjustable panel  2200 . Therefore, the transparency adjustable panel  2200  has a function of controlling brightness or transparency. Namely, when a brightness of the incident light L of the ambient light source LS is strong (for example, sunlight on a sunny day), the transparency adjustable panel  2200  may reduce the incident light L passing through the transparency adjustable panel  2200  by controlling the rotation degree of the liquid crystal molecules. In this way, a brightness of a displayed image or the brightness of the incident light L observed by the user eye UE may be reduced. Alternatively, when the brightness of the incident light L of the ambient light source LS is weak (for example, sunlight in a cloudy day), the transparency adjustable panel  2200  may increase the incident light L passing through the transparency adjustable panel  2200  by controlling the rotation degree of the liquid crystal molecules. In this way, the brightness of the displayed image or the brightness of the incident light L observed by the user eye UE may be improved. Therefore, the transparent display panel  200 E may exhibit good display quality. 
     In some embodiments, the transparency adjustable panel  2200  is disposed between the transparent display panel  200 E and the transparent substrate  100 E. To be specific, the substrate  2110  may be adjacent to the substrate  2240 . The ultraviolet light shielding layer  300 E is located between the transparent substrate  100 E and the substrate  2210 . In some other embodiments, the adhesive layer  120 E may be selectively disposed between the ultraviolet light shielding layer  300 E and the substrate  2210 . In this way, the transparent controllable panel  2200  is located between the ultraviolet light shielding layer  300 E and the transparent display panel  200 E, and has the function of controlling the brightness of the incident light L. The ultraviolet light shielding layer  300 E is located between the ambient light source LS and the transparent display panel  200 E. In this way, deterioration of the transparent display panel  200 E and the active device TFT or the light-emitting element  400 E therein caused by irradiation of ultraviolet light may be reduced. The window  10 E may also achieve excellent technical effects similar to that of the aforementioned embodiments, and structural reliability or display quality is thereby improved. 
       FIG. 8  is a schematic cross-sectional view of a transparent display device according to an embodiment of the disclosure. For clarity of the drawing and convenience of descriptions, several elements are omitted in  FIG. 8 . The transparent display device  20  includes a transparent display panel  200  and an ultraviolet light shielding layer  300 . The ultraviolet light shielding layer  300  is fixed on one side of the transparent display panel  200  (for example, the first side  201 ). In the embodiment, the transparent display panel  200  further has another side (for example, the second side  202 ) opposite to the one side. The first side  201  faces the ambient light source LS. The second side  202  is away from the ambient light source LS (for example, faces away from the ambient light source LS). The ultraviolet light shielding layer  300  is fixed on the first side  201  facing the ambient light source LS. Under the above arrangement, the ultraviolet light shielding layer  300  may be completely located between the ambient light source LS and the transparent display panel  200 . In this way, deterioration of the transparent display panel  200  and the electronic components therein caused by irradiation of ultraviolet light may be reduced. The transparent display device  20  may exhibit good structural quality or display quality. In addition, the transparent display device  20  may also achieve excellent technical effects similar to that of the aforementioned embodiments. 
     Moreover, the Young&#39;s modulus of the ultraviolet light shielding layer  300  may be greater than or equal to the Young&#39;s modulus of the transparent display panel  200 . Alternatively, the rigidity of the ultraviolet light shielding layer  300  may be greater than or equal to the rigidity of the transparent display panel  200 . In some other embodiments, the thickness of the ultraviolet light shielding layer  300  may be greater than or equal to the thickness of the transparent display panel  200 . Under the above arrangement, the ultraviolet light shielding layer  300  may be configured to support the transparent display panel  200 . Therefore, the structural reliability of the transparent display panel  200  may be improved. The overall structural reliability of the transparent display device  20  may be improved. 
       FIG. 9  is a schematic cross-sectional view of a transparent display device according to another embodiment of the disclosure. For clarity of the drawing and convenience of descriptions, several elements are omitted in  FIG. 9 . A transparent display device  20 A of the embodiment is substantially similar to the transparent display device  20  of  FIG. 8 , so that the same and similar components in the two embodiments are not repeated. A main difference between the embodiment and the transparent display device  20  is that the transparent display device  20 A further includes two ultraviolet light shielding layers  300 A- 1 ,  300 A- 2 , and the transparent display panel  200  is disposed between the ultraviolet light shielding layer  300 A- 1  and the ultraviolet light shielding layer  300 A- 2 . For example, the two ultraviolet light shielding layers include a first ultraviolet light shielding layer  300 A- 1  and a second ultraviolet light shielding layer  300 A- 2 . The first ultraviolet light shielding layer  300 A- 1  is disposed on the first side  201 A of the transparent display panel  200 A, and the second ultraviolet light shielding layer  300 A- 2  is disposed on the second side  202 A opposite to the first side  201 A. Under the above arrangement, the transparent display panel  200 A is disposed between the first ultraviolet light shielding layer  300 A- 1  and the second ultraviolet light shielding layer  300 A- 2 . In this way, deterioration of the transparent display panel  200 A and the electronic components therein caused by irradiation of ultraviolet light may be reduced. In addition, the first ultraviolet light shielding layer  300 A- 1  and the second ultraviolet light shielding layer  300 A- 2  may also provide support for the transparent display panel  200 A. Therefore, the structural reliability of the transparent display device  20 A may be improved. The transparent display device  20 A may also achieve excellent technical effects similar to that of the aforementioned embodiments, and structural reliability or display quality is thereby improved. 
       FIG. 10  is a schematic cross-sectional view of a transparent display device according to another embodiment of the disclosure. For clarity of the drawing and convenience of descriptions, several elements are omitted in  FIG. 10 . A transparent display device  20 B of the embodiment is substantially similar to the transparent display device  20  of  FIG. 8 , so that the same and similar components in the two embodiments are not repeated. A main difference between the embodiment and the transparent display device  20  is that the transparent display device  20 B further includes the transparency adjustable panel  2200 . Regarding the specific structure of the transparent controllable panel  2200 , reference may be made to the descriptions of  FIG. 7A  and  FIG. 7B , and details thereof are not repeated. 
     In some embodiments, the ultraviolet light shielding layer  300 B is disposed on a first side  2201  of the transparency adjustable panel  2200  facing the ambient light source LS. Under the above arrangement, the ultraviolet light shielding layer  300 B may be completely located between the ambient light source LS and the transparent display panel  200 B. In this way, deterioration of the transparent display panel  200 B and the electronic components therein caused by irradiation of ultraviolet light may be reduced. The transparent display device  20 B may also achieve excellent technical effects similar to that of the aforementioned embodiments, and structural reliability or display quality is thereby improved. 
       FIG. 11A  is a schematic top view of a vehicle window according to an embodiment of the disclosure.  FIG. 11B  is a schematic cross-sectional view of the vehicle window of  FIG. 11A  along a section line A-A′. For clarity of the drawing and convenience of descriptions, several elements are omitted in  FIG. 11A  and  FIG. 11B . In some embodiments, a window  30  is, for example, the aforementioned window or transparent display device used as a vehicle window. A relationship between the window  30  and a door frame  500  is briefly described below. 
     As shown in  FIG. 11A , the window  30 , for example, includes the door frame  500 , the transparent substrate  100 , and the transparent display panel  200 . The door frame  500  may include a main body portion  510  substantially extending in an X-axis direction, a vertical portion  520  substantially extending in a Y-axis direction and connected to the main body portion  510 , and an inclined portion  530  connecting the main body portion  510  and the vertical portion  520 . The X-axis is perpendicular to the Y-axis, and the X-axis or the Y-axis is perpendicular to the Z-axis. The main body portion  510 , the vertical portion  520 , and the inclined portion  530  are, for example, a frame of the window  30 , and may substantially surround an outer edge of the transparent substrate  100  (serving as the vehicle window). In some other embodiments, the transparent substrate  100  may be partially overlapped with the door frame  500 . For example, the transparent substrate  100  may be partially overlapped with the main body portion  510  to be exhibited or stored during lifting or descending. 
     The transparent substrate  100  includes glass, quartz, sapphire, acrylic resin or other suitable materials, but the disclosure is not limited thereto. The transparent substrate  100  may include a display region AA and a non-display region BA. The display region AA and the non-display region BA may be defined by the outer edge surrounded by the main body portion  510 , the vertical portion  520 , and the inclined portion  530 . The display region AA may be close to the main body portion  510  and the vertical portion  520 . The non-display region BA may be located between the display region AA and the inclined portion  530 , but the disclosure is not limited thereto. 
     According to the window  30  of an embodiment of the disclosure, the transparent display panel  200  is disposed on the display region AA of the transparent substrate  100 . According to another perspective, the transparent display panel  200  may be attached to the transparent substrate  100  serving as a car window, and a region where the transparent display panel  200  is overlapped with the transparent substrate  100  is defined as the display region AA. A region where the transparent display panel  200  is not overlapped with the transparent substrate  100  is defined as the non-display region BA. 
     The display region AA and the transparent display panel  200  located on the display region AA may include a plurality of active regions PX. Referring to  FIG. 1  and  FIG. 11A , the active regions PX, for example, include a plurality of pixels having an image display function. Each active region PX may include a plurality of active devices TFT and display elements  400  shown in  FIG. 7B  to provide the image display function. The multiple active regions PX may be arranged in an array along the X-axis and the Y-axis, but the disclosure is not limited thereto. For example, the active regions PX may be arranged in a column along the Y-axis. Multiple columns may be sequentially arranged along the X-axis, but the disclosure is not limited thereto. In this way, the user may view an image pattern displayed on the transparent display panel  200  in the display region AA along the Z-axis. 
     Referring to  FIG. 11B , the ultraviolet light shielding layer  300  of the window  30  is disposed between the transparent substrate  100  and the transparent display panel  200 . For example, the ultraviolet light shielding layer  300  may be disposed on the first side  201  of the transparent display panel  200  to face the ambient light source (not shown, referring to  FIG. 1 ). Under the above arrangement, the ultraviolet light shielding layer  300  may be completely overlapped with the transparent display panel  200  in the display region AA, or an area of the ultraviolet light shielding layer  300  may be selectively larger than an area of the transparent display panel  200 , such that the ultraviolet light shielding layer  300  may be completely overlapped with the transparent display panel  200  in the display region AA. In other words, the ultraviolet light shielding layer  300  may be completely overlapped with the active region PX of the transparent display panel  200 . In this way, the ultraviolet light irradiated to the transparent display panel  200  and the active region PX thereof may be reduced. Deterioration of the transparent display panel  200  and the electronic components therein caused by irradiation of ultraviolet light may be reduced. The window  30  may also achieve excellent technical effects similar to that of the aforementioned embodiments, and structural reliability or display quality is thereby improved. 
     In some other embodiments, the transparent substrate  100  may include the display region AA but may not include the non-display region BA. That is, the transparent display panel  200  may be completely overlapped with the transparent substrate  100 , so that the entire transparent substrate  100  serving as the vehicle window provides a display function, but the disclosure is not limited thereto. 
       FIG. 12  is a schematic cross-sectional view of a window according to still another embodiment of the disclosure. For clarity of the drawing and convenience of descriptions, several elements are omitted in  FIG. 12 . A window  30 A of the embodiment is substantially similar to the window  30  of  FIG. 11B , so that the same and similar components in the two embodiments are not repeated. A main difference between the embodiment and the window  30  is that the window  30 A further includes another transparent substrate. For example, the window  30 A includes the first transparent substrate  100 , a second transparent substrate  100 ′, the ultraviolet light shielding layer  300 , and the transparent display panel  200 . The adhesive layer  120  may be selectively provided between the first transparent substrate  100  and the second transparent substrate  100 ′. Namely, the first transparent substrate  100 , the adhesive layer  120  and the second transparent substrate  100 ′ may constitute a glued substrate (or referred to as glued glass), but the disclosure is not limited thereto. The ultraviolet light shielding layer  300  is disposed between the second transparent substrate  100 ′ and the transparent display panel  200 . The ultraviolet light shielding layer  300  is located between the second side  102  of the first transparent substrate  100  and the transparent display panel  200 . 
     Under the above arrangement, the ultraviolet light shielding layer  300  is located between the ambient light source LS and the transparent display panel  200 . In this way, the ultraviolet light irradiated to the transparent display panel  200  may be reduced. Deterioration of the transparent display panel  200  and the electronic components therein caused by irradiation of ultraviolet light may be reduced. The window  30 A may also achieve excellent technical effects similar to that of the aforementioned embodiments, and structural reliability or display quality is thereby improved. 
       FIG. 13  is a schematic cross-sectional view of a window according to still another embodiment of the disclosure. For clarity of the drawing and convenience of descriptions, several elements are omitted in  FIG. 13 . A window  30 B of the embodiment is substantially similar to the window  30  of  FIG. 11B , so that the same and similar components in the two embodiments are not repeated. A main difference between the embodiment and the window  30  is that the window  30 B further includes another transparent substrate, and the transparent display panel  200  is located between the two transparent substrates. For example, the window  30 B includes the first transparent substrate  100 , the second transparent substrate  100 ′, the ultraviolet light shielding layer  300 , and the transparent display panel  200 . The adhesive layer  120  may be selectively provided on the second side  102  of the first transparent substrate  100 . That is, the adhesive layer  120  is located between the first transparent substrate  100  and the transparent display panel  200 . The ultraviolet light shielding layer  300  is located between the second side  102  of the first transparent substrate  100  and the transparent display panel  200 . The transparent display panel  200  is located between the first transparent substrate  100  and the second transparent substrate  100 ′. In some embodiments, an adhesive layer  120 ′ may be selectively disposed between the transparent display panel  200  and the second transparent substrate  100 ′. That is, the transparent display panel  200  may be located in a glued substrate (or referred to as glued glass) formed by the first transparent substrate  100 , the adhesive layers  120 ,  120 ′ and the second transparent substrate  100 ′, but the disclosure is not limited thereto. 
     Under the above arrangement, the ultraviolet light shielding layer  300  is located between the ambient light source LS and the transparent display panel  200 . In this way, the ultraviolet light irradiated to the transparent display panel  200  may be reduced. Deterioration of the transparent display panel  200  and the electronic components therein caused by irradiation of ultraviolet light may be reduced. The window  30 B may also achieve excellent technical effects similar to that of the aforementioned embodiments, and structural reliability or display quality is thereby improved. 
     In view of the foregoing, in the window or the transparent display device of an embodiment of the disclosure, since the ultraviolet light shielding layer is completely overlapped with the active region of the transparent display panel and the ultraviolet light shielding layer may be completely located between the ambient light source and the transparent display panel, the incident light emitted by the ambient light source may first pass through the ultraviolet light shielding layer and then enters the transparent display panel. The ultraviolet wavelength of the incident light may be blocked by the ultraviolet light shielding layer. Therefore, the ultraviolet light in the incident light irradiated to the transparent display panel and the active region thereof may be reduced. In this way, deterioration of the transparent display panel and the electronic components in the active region thereof caused by irradiation of ultraviolet light may be reduced. Therefore, the structural reliability or display quality of the transparent display panel may be improved. In addition, the ultraviolet light shielding layer may be configured to support the transparent display panel. Therefore, the structural reliability of the transparent display panel may be improved. The overall structural reliability of the window or the transparent display device may be improved. The window or the transparent display device may exhibit good structural quality or display quality. 
     Note that the above embodiments are only used to illustrate, rather than limiting, the technical solutions of the disclosure. Although the disclosure has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made to the disclosed embodiments without departing from the scope or spirit of the disclosure. In view of the foregoing, it is intended that the disclosure covers modifications and variations provided they fall within the scope of the following claims and their equivalents.