Enhanced windshield display for vehicle

Abstract

The present disclosure provides an enhanced windshield display for a vehicle. An autonomous vehicle includes a window having a first polymeric material layer and a second polymeric material layer between an inner glass layer and an outer glass layer. The first polymer material layer includes perovskite crystals that are activated by UV light and emit visible light. The second polymer material layer is disposed between the outer glass layer and the first polymer material layer. The second polymer material layer blocks UV sunlight to prevent activation of the perovskite crystals. The vehicle also includes a projector configured to project UV light onto the inner side of the window to form a luminescent image on the window.

Description

Technical Field

[0001] This disclosure relates generally to vehicle displays, and more specifically to a vehicle display that includes a projector that projects light onto the windows of a vehicle. Background Technology

[0002] Various types of vehicle displays have been developed. For example, displays can be installed in vehicle dashboards. Head-up displays on windshields have also been developed. Summary of the Invention

[0003] One aspect of this disclosure is a vehicle comprising a body having a passenger compartment. The vehicle may optionally include an autonomous vehicle that does not require direct driver control during at least some vehicle operations on roads, etc. The vehicle also includes a window having an inner glass layer and an outer glass layer on its inner and outer sides, respectively. The window includes a first polymeric material layer located between the inner and outer glass layers. At least a portion of the first polymeric material layer comprises perovskite nanocrystals activated by UV light in the range of about 340 nm to about 380 nm and emitting visible light in the range of about 450 nm to about 750 nm. The window includes a second polymeric material layer between the outer glass layer and the first polymeric material layer. At least a portion of the second polymeric material layer blocks UV light with wavelengths of 400 nm or less to prevent the perovskite nanocrystals from being activated by UV sunlight incident on the outer glass layer. The vehicle also includes a projector mounted in the passenger compartment. The projector is configured to project UV light with wavelengths in the range of approximately 340 nm to approximately 380 nm onto the inside of the car window to selectively activate the perovskite crystals and form an illuminated image on the car window that is visible from inside the car.

[0004] - The projector may optionally include a first light source, a second light source, and a third light source, which project light with frequencies of approximately 340 nm, approximately 360 nm, and approximately 380 nm onto the inside of the vehicle window, respectively.

[0005] - One or more of the first light source, the second light source, and the third light source may optionally include a laser.

[0006] - The size of perovskite nanocrystals can be a few nanometers or smaller.

[0007] The first polymer material layer may include: 1) a first perovskite crystal, which is activated by UV light of a first UV wavelength and emits blue light; 2) a second perovskite crystal, which is activated by UV light of a second UV wavelength and emits green light; and 3) a third perovskite crystal, which is activated by UV light of a third wavelength and emits red light. The projector may be configured to selectively project at least the first UV wavelength, the second UV wavelength, and the third UV wavelength onto the inside of the vehicle window.

[0008] - The first UV wavelength can be about 330 nm to about 350 nm, the second UV wavelength can be about 350 nm to about 370 nm, and the third UV wavelength can be about 370 nm to about 390 nm.

[0009] - The first UV wavelength can be about 340 nm, the second UV wavelength can be about 360 nm, and the third UV wavelength can be about 380 nm.

[0010] Blue light can have a wavelength of about 450nm, green light can have a wavelength of about 540nm, and red light can have a wavelength of about 750nm.

[0011] - The window may include an acoustic polyvinyl butyral (PVB) layer disposed between a first polymer material layer and a second polymer material layer to provide sound insulation.

[0012] - The perovskite nanocrystals of at least one of the first polymer material layer and the second polymer material layer can be composited into the polymer material, and then the composite material is extruded to form a sheet.

[0013] - At least one of the first polymer material layer and the second polymer material layer may include a main polymer material layer that does not contain perovskite nanocrystals. The perovskite nanocrystals may be disposed in a material layer disposed on at least one side of the main polymer material layer.

[0014] Another aspect of this disclosure is a vehicle comprising: a body having a passenger compartment; and a window comprising an inner glass layer and an outer glass layer on an inner and outer side of the window, respectively. The window further comprises: 1) a first polymeric material layer between the inner glass layer and the outer glass layer, wherein at least a portion of the first polymeric material layer comprises perovskite crystals activated by UV light having a first wavelength, a second wavelength, and a third wavelength, and emitting blue visible light, green visible light, and red visible light, respectively; and 2) a second polymeric material layer between the outer glass layer and the first polymeric material layer. At least a portion of the second polymeric material layer blocks UV light with wavelengths of about 400 nm or less to prevent the perovskite crystals from being activated by UV light from sunlight incident on the outer glass layer. The vehicle includes a projector mounted in the passenger compartment. The projector is configured to project UV light having the first, second, and third wavelengths onto the inner side of the window to selectively activate the perovskite crystals and form a luminescent image visible from inside the passenger compartment on the window. At least some parts of the luminescent image are formed by blue, green and red light emitted by the perovskite crystal.

[0015] - The UV light from the projector can be in the range of approximately 340nm to approximately 380nm.

[0016] - The projector may include a first light source, a second light source, and a third light source, which project light with frequencies of approximately 340 nm, approximately 360 nm, and approximately 380 nm onto the inside of the vehicle window, respectively.

[0017] - The first UV wavelength is about 330 nm to about 350 nm, the second UV wavelength is about 350 nm to about 370 nm, and the third UV wavelength is about 370 nm to about 390 nm.

[0018] - The first UV wavelength is approximately 340 nm, the second UV wavelength is approximately 360 nm, and the third UV wavelength is approximately 380 nm.

[0019] - The vehicle window may optionally include a windshield, and the vehicle may optionally include rearview mirrors. The projector may be integrated into the rearview mirror and may project light onto the inner surface of the windshield.

[0020] The vehicle body may include a roof structure, and the windows may include roof glass extending above at least a portion of the passenger compartment. A projector may be mounted to the roof structure to project light onto the underside of the roof glass.

[0021] - The vehicle windows can optionally include multiple windows selected from a group consisting of the windshield, rear window, roof glass, right-side window, and left-side window. The projector can be configured to project light onto multiple windows.

[0022] Another aspect of this disclosure is a method for providing an luminescent image on a vehicle window. The method includes providing a window for the vehicle, the window comprising an inner glass layer and an outer glass layer on an inner and outer side of the window, respectively. The window further includes: 1) a first polymeric material layer between the inner glass layer and the outer glass layer, wherein the first polymeric material layer comprises perovskite crystals activated by UV light and emitting visible light; and 2) a second polymeric material layer between the outer glass layer and the first polymeric material layer, wherein the second polymeric material layer blocks UV light from sunlight incident on the outer glass layer to prevent activation of the perovskite crystals. The method further includes using a projector installed in the vehicle compartment to project light in the wavelength range of about 340 nm to about 380 nm onto the inner side of the window to activate the perovskite crystals and form an luminescent image on the window visible from inside the vehicle compartment.

[0023] By referring to the following description, claims and drawings, those skilled in the art will further understand and appreciate these and other features, advantages and objectives of the present invention. Attached Figure Description

[0024] In the attached diagram:

[0025] Figure 1 This is a side view of a vehicle according to one aspect of this disclosure;

[0026] Figure 2 yes Figure 1 A top-down plan view of the vehicle's chassis;

[0027] Figure 3 It is a partial cross-sectional view of a vehicle window according to one aspect of this disclosure;

[0028] Figure 4 This is a schematic diagram of a vehicle according to one aspect of this disclosure. Detailed Implementation

[0029] Reference will now be made in detail to the preferred embodiments of this disclosure, examples of which are illustrated in the accompanying drawings. Where possible, the same reference numerals will be used throughout the drawings to refer to the same or similar parts. In the drawings, structural elements are depicted not to scale, and some parts are enlarged relative to others for emphasis and understanding purposes.

[0030] Detailed embodiments of the present disclosure are disclosed herein as requested; however, it should be understood that the disclosed embodiments are merely examples of different and alternative forms in which the invention may be embodied. The accompanying drawings are not necessarily detailed designs; some schematic diagrams may be enlarged or minimized to show a functional overview. Therefore, the specific structural and functional details disclosed herein are not to be construed as limiting, but are merely intended to teach those skilled in the art to employ the representative basis of the invention in various ways.

[0031] For the purposes of this description, the terms “up,” “down,” “right,” “left,” “back,” “front,” “vertical,” “horizontal,” and their derivatives should refer to, for example, the following: Figure 1 The concept of orientation is used. However, it should be understood that the concept may present various alternative orientations unless explicitly specified otherwise. It should also be understood that the specific apparatus and processes shown in the accompanying drawings and described in the following specification are merely exemplary embodiments of the inventive concept defined in the appended claims. Therefore, unless otherwise expressly stated in the claims, the specific dimensions and other physical characteristics relating to the embodiments disclosed herein should not be considered limiting.

[0032] The embodiments illustrated herein primarily exist in combinations of method steps and apparatus components related to vehicle displays. Therefore, apparatus components and method steps have been indicated where appropriate by conventional symbols in the drawings, showing only those specific details relevant to understanding the embodiments of this disclosure, so as not to obscure the disclosure with details readily apparent to those skilled in the art who benefit from the description herein. Furthermore, the same reference numerals denote the same elements in the specification and drawings.

[0033] As used herein, the terms “or” and “and / or” when used with two or more listed items mean that any one of the listed items may be used alone, or any combination of two or more listed items may be used. For example, if a composition or device is described as containing or including components A, B, or C, the composition or device may contain (including): A only; B only; C only; a combination of A and B; a combination of A and C; a combination of B and C; or a combination of A, B, and C. If a composition or device is described as containing or including components A and / or B and / or C, the composition or device may contain (including): A only; B only; C only; a combination of A and B; a combination of A and C; a combination of B and C; or a combination of A, B, and C.

[0034] In this document, relational terms such as first and second, top and bottom are used individually to distinguish one entity or action from another, without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms “comprising,” “including,” or any other variation thereof are intended to cover non-exclusive inclusion, such that a process, method, article of manufacture, or apparatus that comprises a list of elements includes not only those elements but may also include other elements not expressly listed or inherent to such process, method, article of manufacture, or apparatus. Without further constraints, an element preceded by “comprising…” does not exclude the presence of additional identical elements in the process, method, article of manufacture, or apparatus that includes said element.

[0035] As used herein, the term "about" means that a quantity, size, formulation, parameter, and other quantity and characteristic is not precise, nor need it to be precise, but may be approximate and / or larger or smaller as required to reflect tolerances, conversion factors, rounding, measurement errors, and other factors known to those skilled in the art. When the term "about" is used to describe an endpoint of a value or range, this disclosure should be understood to include both the specific value and the mentioned endpoint. Whether or not the endpoints of numerical values ​​or ranges in this specification are referred to as "about," the endpoints are intended to include both embodiments: one modified by "about" and one not modified by "about." It should also be understood that each endpoint of a range is significant both in relation to and independent of another endpoint.

[0036] As used herein, the terms “substantially,” “basically,” and variations thereof are intended to indicate that the described feature is equal to or approximately equal to a value or description. For example, a “substantially planar” surface is intended to indicate a planar or approximately planar surface. Additionally, “substantially” is intended to mean that two values ​​are equal or approximately equal. In some embodiments, “substantially” may indicate that the values ​​are within about 10% of each other, such as within about 5% of each other, or within about 2% of each other.

[0037] Unless explicitly indicated otherwise, as used herein, the terms “the,” “an,” or “a” mean “at least one” and should not be limited to “only one.” Thus, for example, unless the context clearly indicates otherwise, references to “component” include embodiments having two or more such components.

[0038] refer to Figure 1 and Figure 2 According to one aspect of this disclosure, the vehicle 1 includes a body structure 2 and a passenger compartment 3. The passenger compartment may include first-row seats, second-row seats, and third-row seats 9A-9C, respectively. (See below for details.) Figure 4In more detail, vehicle 1 may optionally include an autonomous vehicle configured to wirelessly communicate with, for example, satellite 4 and / or cellular tower 5 and / or cloud server 6 and / or other devices.

[0039] Vehicle 1 may include windows (such as roof glass 8 disposed in roof structure 7), windshield 10, rear window 12, and one or more side windows 14A to 14D. Vehicle 1 may also include a projector 15A integrated into a rearview mirror 16. Projector 15A projects light 20 onto the inner surface 22 of windshield 10 to form an illuminated image 20 visible from inside the passenger compartment 3 of vehicle 1 on windshield 10. If vehicle 1 includes an autonomous vehicle, the illuminated image 20 may include, for example, video entertainment content displayed when vehicle 1 is operating in autonomous mode.

[0040] In addition to, or in place of, projector 15A, vehicle 1 may also include projector 15B. As used herein, "projector" and "projector 15" generally refer to any projector configured to project light onto the inner surface of at least one window. Projector 15B may be mounted to roof structure 7 and may be configured to project light 18 onto roof glass 8 and / or windshield 10 and / or rear window glass 12 and / or one or more side windows 14A to 14C to form an luminous image 20. Projector 15B may include one or more individual projectors 24A to 24D configured to project light 18 onto roof glass 18 and / or rear window glass 12 and / or one or more side windows 14A to 14D. Alternatively, projector 15B may include a single projector (e.g., projector 24A), and projector 15B may be movably mounted to the roof structure, whereby the single projector can be moved to direct light 18 onto selected one of windows 8, 10, 12 and / or 14A to 14D. Alternatively, vehicle 1 may include only a single window (e.g., a windshield) configured to provide image 20 when light from projectors 15A and / or 15B is projected onto the window.

[0041] Projectors 15A and / or 15B can be configured to project three different wavelengths of light 18 to selectively activate perovskite crystals in one or more of the vehicle windows (e.g., roof glass 8 and / or windshield 10 and / or rear window 12 and / or side windows 14A to 14D) to form a luminescent image 20. For example, projectors 15A and / or 15B can be configured to project light 18 having a first wavelength of about 320 nm to about 350 nm, a second wavelength of about 340 nm to about 370 nm, and a third wavelength of about 370 nm to about 390 nm. As discussed in more detail below, the vehicle window glass may include perovskite crystals that emit blue, green, and red light in response to light at the first, second, and third frequencies, respectively, from projectors 15A and / or 15B. This allows the system to provide a luminescent image 20 with a wide range of colors. Typically, the luminous image 20 may include a still image in the form of text (e.g., “Welcome” or “Thirteen minutes until arrival”) and / or may be decorative or informational images or patterns. The luminous image 20 may also include video images, such as movies. The vehicle 1 may include an audio system (not specifically shown) to provide audio corresponding to the luminous still images and / or video images, thereby allowing those in the vehicle 1 to watch movies and / or other videos accompanied by audio.

[0042] Further reference Figure 3 The window 25 may include a first or inner glass layer 26, a second or outer glass layer 28, a first polymer material layer 30 between the inner glass layer 26 and the outer glass layer 28, and a second polymer material layer 32 between the outer glass layer 28 and the first polymer material layer 30. The window 25 may optionally include a central polymer material layer 34 to provide increased sound insulation. The configuration of the window 25 can be used for virtually any type of window, including… Figure 1 and Figure 2 The roof glass 8 and / or the windshield 10 and / or the rear window 14 and / or the side windows 14A to 14D.

[0043] The first polymer layer 30 may include a suitable polymer, such as polyvinyl butyral (PVB), having perovskite particles disposed within the PVB material. Perovskite crystals can be embedded within the first polymer layer 30 by compounding (mixing) the polymer material with perovskite crystals, and then the compounded material can be extruded to form a sheet. Alternatively, the first polymer layer 30 may include a main polymer layer (e.g., PVB) without perovskite crystals and a coating 36 having perovskite crystals disposed within a coating layer 36. For example, perovskite crystals may be added to a transparent ink or coated or sprayed onto one side of a polymer material layer or sheet that is substantially free of perovskite crystals to form coating 36. The perovskite crystals may include nanocrystals having an average size of approximately a few nanometers (e.g., 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 30, 40).

[0044] The first polymer layer 30 may include three different types of perovskite phosphorescent materials, which may be in the form of nanoparticles with a size of several nanometers. A first type of perovskite crystal may be configured to be activated by UV light in the range of about 330 nm to about 350 nm and emit blue light. For example, the first perovskite crystal may be activated by UV light of about 340 nm and emit blue light of about 450 nm. A second type of perovskite crystal may be activated by UV light of about 350 nm to about 370 nm and emit green light. For example, the second perovskite crystal may be activated by UV light of about 360 nm and emit green light of about 540 nm. A third type of perovskite crystal in the first polymer layer 30 may be activated by UV light of about 370 nm to about 390 nm and emit red light. For example, the third type of perovskite crystal may be activated by UV light of about 380 nm and emit red light of about 750 nm. It should be understood that the frequency of UV light that causes the emission of light at a specific frequency can be adjusted by selecting a perovskite crystal that emits light at a desired frequency in response to a selected UV light frequency. As described above, the three types of perovskite crystals can be composited in a polymer material and extruded into a sheet, or the three types of perovskite crystals can be deposited on one side of the first polymer layer 30 to form a coating 36, also as described above.

[0045] The second polymer layer 32 includes a UVA inhibitor that blocks light with wavelengths less than a selected wavelength. Preferably, the second polymer layer 32 blocks light with wavelengths less than about 380 nm or less than about 400 nm. The UVA inhibitor may include, for example, benzotriazoles or benzophenones, or other suitable inhibitors. Typically, UVA inhibitors used in known vehicle glass block light with wavelengths less than about 370 nm to allow light of the full visible spectrum to pass through the glass (e.g., a windshield). However, the second polymer layer 32 preferably blocks light with slightly larger wavelengths (e.g., 380 nm or 400 nm) to ensure that UV light from sunlight 38 does not travel through the second polymer layer 32 and activate the perovskite crystals of the first polymer layer 30. Therefore, compared to known vehicle window glass, the window according to this disclosure blocks some visible light (e.g., visible light from about 370 nm to about 380 nm, or from about 370 nm to about 400 nm) in addition to blocking UV light less than about 370 nm.

[0046] The central layer 34 may include a PVB material configured to absorb sound. Polymer layers 30, 32, and 34 may be configured to provide a desired level of noise reduction while providing the desired display layer. Typically, the central layer 34 may include a PVB material softer than that of layers 30 and 32 to provide increased sound absorption. However, the first polymer layer 30 may include a PVB material softer than that of the central layer 34 to extend noise reduction above approximately 5,000 Hz. Typically, perovskite crystals may be disposed only in the first polymer layer 30, only in the central layer 34, or in both layers 30 and 34. Although layers 30, 32, and 34 preferably comprise a PVB polymer material, one or more of layers 30, 32, and / or 34 may include other suitable polymers or materials, and this disclosure is not limited to PVB materials.

[0047] Further reference Figure 4 Vehicle 1 can be configured to communicate with an Automated Vehicle Positioning (AVL) system, which may include one or more of a satellite 4, a cellular tower 5, a cloud server 6, and / or other devices. Vehicle 1 can be configured to utilize data from one or more sources to provide audio and / or video entertainment to individuals within vehicle 1. For example, a roof glass 8 ( Figure 2 The video images 20 on the vehicle 1 can provide entertainment for one or more users in the first row 9A, the second row 9B, or the third row 9C of the vehicle 1.

[0048] Compared to known head-up displays (HUDs) limited to the windshield of a vehicle, the display system of this disclosure can provide an image 20, for example, on the roof glass 8, which can be visible to those in the second-row seats 9B and the third-row seats 9C. If the vehicle 1 includes an autonomous vehicle, users in all three rows 9A to 9C can simultaneously view the image 20 on the roof glass 8, thereby providing information and / or entertainment to all those in the vehicle 1.

[0049] It should be understood that changes and modifications may be made to the foregoing structure without departing from the concept of the invention, and it should also be understood that such concept is intended to be covered by the appended claims unless those claims expressly state otherwise in their language.

[0050] According to the present invention, an autonomous vehicle is provided, the autonomous vehicle having: a body having a passenger compartment; a window comprising an inner glass layer and an outer glass layer respectively on an inner and outer side of the window, the window further comprising: 1) a first polymer material layer between the inner glass layer and the outer glass layer, at least a portion of the first polymer material layer comprising perovskite nanocrystals, the perovskite nanocrystals being activated by UV light in the range of 340 nm to 380 nm and emitting visible light in the range of 450 nm to 750 nm; and 2) in the A second polymer material layer between the outer glass layer and the first polymer material layer, wherein at least a portion of the second polymer material layer blocks UV light with a wavelength of 400 nm or less to prevent the perovskite nanocrystals from being activated by UV sunlight incident on the outer glass layer; and a projector installed in the vehicle compartment, wherein the projector is configured to project UV light with a wavelength in the range of 340 nm to 380 nm onto the inner side of the window to selectively activate the perovskite crystals and form a luminescent image on the window that is visible from inside the vehicle compartment.

[0051] According to one embodiment: the projector includes a first light source, a second light source, and a third light source, the first light source, the second light source, and the third light source project light with frequencies of 340nm, 360nm, and 380nm onto the inner side of the vehicle window, respectively.

[0052] According to one embodiment: each of the first light source, the second light source, and the third light source includes a laser.

[0053] According to one embodiment: the average size of the perovskite nanocrystals is a few nanometers or smaller.

[0054] According to one embodiment: the first polymer material layer includes: 1) a first perovskite nanocrystal, the first perovskite nanocrystal being activated by UV light of a first UV wavelength and emitting blue light; 2) a second perovskite crystal, the second perovskite crystal being activated by UV light of a second UV wavelength and emitting green light; 3) a third perovskite crystal, the third perovskite crystal being activated by UV light of a third wavelength and emitting red light; and wherein the projector is configured to selectively project the first UV wavelength, the second UV wavelength, and the third UV wavelength onto the inner side of the vehicle window.

[0055] According to one embodiment: the first UV wavelength is 330nm to 350nm, the second UV wavelength is 350nm to 370nm, and the third UV wavelength is 370nm to 390nm.

[0056] According to one embodiment: the first UV wavelength is 340nm, the second UV wavelength is 360nm, and the third UV wavelength is 380nm.

[0057] According to one embodiment: the blue light has a wavelength of 450 nm, the green light has a wavelength of 540 nm, and the red light has a wavelength of 750 nm.

[0058] According to one embodiment, the window includes an acoustic polyvinyl butyral (PVB) layer disposed between the first polymer material layer and the second polymer material layer to provide sound insulation.

[0059] According to one embodiment: the perovskite nanocrystals of at least one of the first polymer material layer and the second polymer material layer are composited into the polymer material, and then the composite material is extruded to form a sheet.

[0060] According to one embodiment: at least one of the first polymer material layer and the second polymer material layer includes a main polymer material layer without perovskite nanocrystals, and the perovskite nanocrystals are disposed in a material layer disposed on at least one side of the main polymer material layer.

[0061] According to the present invention, a vehicle is provided, the vehicle having: a body having a passenger compartment; a window comprising an inner glass layer and an outer glass layer respectively on an inner and outer side of the window, the window further comprising: 1) a first polymer material layer between the inner glass layer and the outer glass layer, at least a portion of the first polymer material layer comprising perovskite crystals, the perovskite crystals being activated by UV light having a first wavelength, a second wavelength, and a third wavelength and emitting blue visible light, green visible light, and red visible light respectively; and 2) a second polymer material layer between the outer glass layer and the first polymer material layer. The second polymer material layer, wherein at least a portion of it blocks UV light with a wavelength of 400 nm or less to prevent the perovskite crystal from being activated by UV light from sunlight incident on the outer glass layer; and a projector installed in the vehicle compartment, wherein the projector is configured to project UV light having the first wavelength, the second wavelength, and the third wavelength onto the inner side of the window to selectively activate the perovskite crystal and form a luminescent image visible from inside the vehicle compartment on the window, wherein a portion of the luminescent image is formed by blue, green, and red light emitted by the perovskite crystal.

[0062] According to one embodiment: the UV light from the projector is in the range of 340nm to 380nm.

[0063] According to one embodiment: the projector includes a first light source, a second light source, and a third light source, the first light source, the second light source, and the third light source project light with frequencies of 340nm, 360nm, and 380nm onto the inner side of the vehicle window, respectively.

[0064] According to one embodiment: the first UV wavelength is 330nm to 350nm, the second UV wavelength is 350nm to 370nm, and the third UV wavelength is 370nm to 390nm.

[0065] According to one embodiment: the first UV wavelength is 340nm, the second UV wavelength is 360nm, and the third UV wavelength is 380nm.

[0066] According to one embodiment: the window includes a windshield; the vehicle includes a rearview mirror; and the projector is integrated into the rearview mirror to project light onto the inner surface of the windshield.

[0067] According to one embodiment: the vehicle body includes a roof structure; the window includes a roof glass extending above at least a portion of the passenger compartment; the projector is mounted to the roof structure to project light onto the lower side of the roof glass.

[0068] According to one embodiment: the vehicle window includes a plurality of windows selected from the group consisting of a windshield, a rear window, a roof glass, a right-side window, and a left-side window; and the projector is configured to project light onto the plurality of windows.

[0069] According to the present invention, a method for providing a luminescent image on a vehicle window includes: providing a window for the vehicle, the window including an inner glass layer and an outer glass layer on an inner side and an outer side of the window, the window further including: 1) a first polymer material layer between the inner glass layer and the outer glass layer, the first polymer material layer including a perovskite crystal, the perovskite crystal being activated by UV light and emitting visible light; and 2) a second polymer material layer between the outer glass layer and the first polymer material layer, wherein the second polymer material layer blocks UV light from sunlight incident on the outer glass layer, thereby preventing the perovskite crystal from emitting light due to sunlight incident on the outer glass layer; and projecting light in the wavelength range of 340 nm to 380 nm onto the inner side of the window using a projector installed in the vehicle compartment to activate the perovskite crystal and form a luminescent image visible from inside the vehicle compartment on the window.

Claims

1. A vehicle comprising: a vehicle body having a vehicle cabin; a window comprising inner and outer glass layers on an inner side and an outer side of the window, respectively, the window further comprising: 1) a first polymer material layer between the inner and outer glass layers, at least a portion of the first polymer material layer comprising perovskite crystals that are activated by UV light having a first, second, and third wavelength and emit blue, green, and red visible light, respectively, and 2) a second polymer material layer between the outer glass layer and the first polymer material layer, wherein at least a portion of the second polymer material layer blocks UV light having a wavelength of 400 nm or less to prevent the perovskite crystals from being activated by UV light from sunlight incident on the outer glass layer; a projector mounted in the vehicle cabin, wherein the projector is configured to project UV light having the first, second, and third wavelengths onto the inner side of the window to selectively activate the perovskite crystals and form a luminescent image on the window that is visible from inside the vehicle cabin, wherein portions of the luminescent image are formed by the blue, green, and red light emitted by the perovskite crystals.

2. The vehicle of claim 1, wherein: the UV light from the projector is in a range of 340 nm to 380 nm.

3. The vehicle of claim 1 or claim 2, wherein: the projector comprises first, second, and third light sources that project light having frequencies of 340 nm, 360 nm, and 380 nm, respectively, onto the inner side of the window.

4. The vehicle of any one of claims 1 to 3, wherein: the first UV wavelength is 330 nm to 350 nm, the second UV wavelength is 350 nm to 370 nm, and the third UV wavelength is 370 nm to 390 nm.

5. The vehicle of any one of claims 1 to 4, wherein: the first UV wavelength is 340 nm, the second UV wavelength is 360 nm, and the third UV wavelength is 380 nm.

6. The vehicle of any one of claims 1 to 5, wherein: the window comprises a windshield; and: the vehicle comprises a rearview mirror; the projector is integrated into the rearview mirror to project light onto an inner surface of the windshield.

7. The vehicle of any one of claims 1 to 6, wherein: the vehicle body comprises a roof structure; the window comprises a roof glass that extends over at least a portion of the vehicle cabin; the projector is mounted to the roof structure to project light onto an underside of the roof glass.

8. The vehicle of any one of claims 1 to 7, wherein: the window comprises a plurality of windows selected from the group consisting of a windshield, a rear window, a roof glass, a right side window, and a left side window; the projector is configured to project light onto the plurality of windows.

9. The vehicle of claim 3, wherein: each of the first, second, and third light sources comprises a laser.

10. The vehicle of any one of claims 1-9, wherein: the perovskite nanocrystals have an average size of a few nanometers or less.

11. The vehicle of any one of claims 1-10, wherein: the blue light has a wavelength of 450 nm, the green light has a wavelength of 540 nm, and the red light has a wavelength of 750 nm.

12. The vehicle of any one of claims 1-11, wherein: the window comprises an acoustic polyvinyl butyral (PVB) layer disposed between the first and second polymeric material layers to provide sound insulation.

13. The vehicle of any one of claims 1-12, wherein: the perovskite nanocrystals of at least one of the first and second polymeric material layers are compounded into the polymeric material, which is then extruded to form a sheet.

14. The vehicle of any one of claims 1-13, wherein: at least one of the first and second polymeric material layers comprises a host polymeric material layer that is free of perovskite nanocrystals, and the perovskite nanocrystals are disposed in a layer of material disposed on at least one side of the host polymeric material layer.

15. A method of providing a luminescent image on a window of a vehicle, the method comprising: providing a window for the vehicle, the window comprising an inner glass layer and an outer glass layer on an inner side and an outer side of the window, respectively, the window further comprising: 1) a first polymeric material layer between the inner and outer glass layers, the first polymeric material layer comprising perovskite crystals that are activated by UV light and emit visible light, and 2) a second polymeric material layer between the outer glass layer and the first polymeric material layer, wherein the second polymeric material layer blocks UV light from sunlight incident on the outer glass layer, whereby the perovskite crystals do not emit light as a result of sunlight incident on the outer glass layer; and: projecting light having a wavelength in a range of 340 nm to 380 nm onto the inner side of the window with a projector mounted in a passenger compartment to activate the perovskite crystals and form a luminescent image on the window that is visible from inside the passenger compartment.

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