Display device for glazing and automotive glazing system

Abstract

The present disclosure relates to a display device (106) for an automotive glazing (102) to display information with low form factor design. The display device (106) may comprise a multi-layer Printed Circuit Board (PCB) (202) comprising a controller (212) and a plurality of light emitting elements (204) mounted thereon, a spacer (206) for receiving the plurality of light emitting elements (204), at least two light diffusing films (208). Further, the display device (106) may comprise a protective frame (210) provided around a periphery of the multi-layer PCB (202) to form an integrated display assembly. The protecting frame of the display device (106) automatically aligns with the intended position on the surface of the glazing.

Description

[0001] DISPLAY DEVICE FOR GLAZING AND AUTOMOTIVE GLAZING SYSTEM

[0002] TECHNICAL FIELD

[0003]

[0001] The present disclosure generally relates to a display device in a vehicle. More particularly, the present disclosure relates to a display device for a glazing and an automotive glazing system.

[0004] BACKGROUND

[0005]

[0002] The following description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.

[0006]

[0003] In automotive systems, a driving support system (also referred as Advanced driver-assistance system (ADAS)) provides displaying of necessary information to a driver of a vehicle regarding access of the vehicle. The driving support system comprises a display device for providing a view of forward region of the vehicle, rearward region of the vehicle and other maneuvers, displays information (such as positional data, traffic information, or the like), or etc. on a display portion of the display device. The vehicle includes different glazing, which refer to glass windows or similar materials within a frame, upon which the display device is mounted.

[0007]

[0004] In existing driving support systems, integrating the display device with the glazing may distress Form factor of the driving support system. The Form factor refers to a design feature that specifies size, shape, and other physical characteristics of electronics components of the driving support systems. The distressing Form factor may influence hardware design aspects of the driving support system. Thus, the overall integration of the display device and the glazing along with other structural components may effectively impact the performance of the driving support system. Therefore, it is essential to achieve an optimal form factor by properly integrating the components in order to enhance the performance of the driving support system.

[0008]

[0005] The present disclosure aims to address one or more of the limitations outlined above or any other challenges associated with prior art. SUMMARY

[0009]

[0006] The following presents a simplified summary to provide a basic understanding of some aspects of adaptively integrating a display device into a glazing or pillar unit of an automobile. This summary is not an extensive overview and is intended to neither identify key or critical elements nor delineate the scope of such elements. Its purpose is to present some concepts of the described features in a simplified form as a prelude to the more detailed description that is presented later.

[0010]

[0007] An exemplary aspect of the disclosure may provide a display device for glazing and an automotive glazing system for adaptively integrating into the glazing or pillar unit of an automobile. The present disclosure may include a display device for glazing. The display device may comprise: a multi-layer Printed Circuit Board (PCB) comprising a controller and a plurality of light emitting elements mounted thereon; a spacer with a plurality of grooves on a first side for receiving the plurality of light emitting elements; at least two light diffusing films arrange on a second side of the spacer. Further, the display device may comprise a protective frame provided around a periphery of the multi-layer PCB to form an integrated display assembly, wherein the controller is communicatively connected with the plurality of light emitting elements and is configured to control illumination of the plurality of light emitting elements to display information on the at least two light diffusing elements. The protecting frame of the display device may align with an intended position on the surface of the glazing.

[0011]

[0008] Yet another exemplary aspect of the disclosure provides an automotive glazing system. The automotive glazing system may comprise: an automotive glazing and a display device configured to be mounted against the automotive glazing, wherein the display device includes: a multi-layer Printed Circuit Board (PCB) comprising a controller and a plurality of light emitting elements mounted thereon. Further, the display device may comprise a spacer with a plurality of grooves on a first side for receiving the plurality of light emitting elements; at least two light diffusing films arranged on a second side of the spacer. Further, the display device may comprise a protective frame provided around a periphery of the multi-layer PCB to form an integrated display assembly, wherein the controller is communicatively connected with the plurality of light emitting elements and is configured to control illumination of the plurality of light emitting elements to display information on the at least two light diffusing elements. Thus, the integrated display assembly may have a low form factor value or thickness and the display assembly may adaptively integrate into the glazing or pillar region of an automobile.

[0012]

[0009] It is to be understood that the aspects and embodiments of the disclosure described above may be used in any combination with each other. Several of the aspects and embodiments may be combined to form a further embodiment of the disclosure.

[0013]

[0010] The above summary is provided merely for the purpose of summarizing some example embodiments to provide a basic understanding of some aspects of the disclosure. Accordingly, it will be appreciated that the above-described embodiments are merely examples and should not be construed to narrow the scope or spirit of the disclosure in any way. It will be appreciated that the scope of the disclosure encompasses many potential embodiments in addition to those here summarized, some of which will be further described below.

[0014] BRIEF DESCRIPTION OF THE DRAWINGS

[0015] [OH] The embodiments of the disclosure itself, as well as a preferred mode of use, further objectives, and advantages thereof, will best be understood by reference to the following detailed description of an illustrative embodiment when read in conjunction with the accompanying drawings. One or more embodiments are now described, by way of example only, with reference to the accompanying drawings in which:

[0016]

[0012] FIG. 1A illustrates a vehicle in an exemplary environment in which the techniques of the present disclosure may be implemented, in accordance with an embodiment of the present disclosure.

[0017]

[0013] FIG. IB illustrates the vehicle equipped with a display device, in accordance with the present disclosure.

[0018]

[0014] FIG. 2A illustrates a block diagram representation of the display device of FIG. IB, in accordance with an embodiment of the present disclosure.

[0019]

[0015] FIG. 2B illustrates an exemplary block diagram of an automotive glazing system of the vehicle, in accordance with an embodiment of the present disclosure.

[0020]

[0016] FIG. 3A-3B illustrate schematic representations of a protective frame, in accordance with the present disclosure.

[0021]

[0017] FIG.3C-3D illustrate schematic representations of the protective frame, in accordance with the present disclosure.

[0018] FIG. 4 illustrates an exemplary block diagram of an Electronics Control Unit (ECU), in accordance with an embodiment of the present disclosure.

[0022]

[0019] The figures depict embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

[0023] DETAILED DESCRIPTION

[0024]

[0020] Exemplary embodiments are described with reference to the accompanying drawings. Wherever convenient, the same reference numbers are used throughout the drawings to refer to the same or like parts. While examples and features of disclosed principles are described herein, modifications, adaptations, and other implementations are possible without departing from the spirit and scope of the disclosed embodiments. It is intended that the following detailed description be considered as exemplary only, with the true scope and spirit being indicated by the following claims. Additional illustrative embodiments are listed below.

[0025]

[0021] In the present document, the word “exemplary” is used herein to mean “serving as an example, instance, or illustration.” Any embodiment or implementation of the present subject matter described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0026]

[0022] As used herein, the term “comprising” is not intended to be limiting, but may be a transitional term synonymous with “including,” “containing,” or “characterized by.” The term “comprising” may thereby be inclusive or open-ended and does not exclude additional, unrecited elements or method steps when used in a claim. For instance, in describing a method, “comprising” indicates that the claim is open- ended and allows for additional steps. In describing a device, “comprising” may mean that a named element(s) may be essential for an embodiment or aspect, but other elements may be added and still form a construct within the scope of a claim. In contrast, the transitional phrase “consisting of’ excludes any element, step, or ingredient not specified in a claim. This is consistent with the use of the term throughout the specification.

[0027]

[0023] As discussed in the background section, integration of a display device with a glazing may distress Form factor of a driving support system. The Form factor refers to a design feature that specifies size, shape, and other physical characteristics of electronics components. The driving support system with the distressed Form factor may affect hardware design aspects of the driving support system. For example, changing the form factor of the driving support system may influence changing at least one of thickness, size, quantity, shape, or etc., that affect the integration of the display device (and other components) with the glazing.

[0028]

[0024] The display device may include incorporating indicator lights to display the information. Incorporating the indicator lights to display the information in the display device may result in heat dissipation that eventually affects occupants within the vehicle or users outside the vehicle. Further, improper fixation of the components of the display device inside and outside the vehicle may negatively be impacted by temperature, humidity, or other weather conditions, etc. Thus, the driving support systems are associated with various structural complications and limitations concerning the fixation of components that exert poor influence on the performance of the driving support system.

[0029]

[0025] Additionally, the display device mounted on the glazing or other regions may pose challenges such as dismantling and reassembling complications, especially when display elements are dispersed across multiple sections. Furthermore, display elements of the display devices are often flimsy, making them susceptible to being easily peeled off or removed without the need for specialized tools. Such flimsy display elements cannot be reliably positioned or mounted on surfaces that are curved along the x-y axes of the glazing unit. Further, installation of the display elements and other components often requires special mating tools (e.g., screws and threads, pins, and holes, etc.). When installing a printed circuit board (PCB) with the display elements may require dedicated heat sinks to manage heat dissipation by the PCB. Further, the overall thickness of the display devices may frequently exceed to a predetermined limit (e.g., thickness beyond 5 mm). Further, fixing of various components with overall thickness of the display devices within the predetermined limit (e.g., thickness less than 5 mm), issues such as spotting may arise in the driving support system. Therefore, there is a need for a display device comprising display, control, and protective casing elements as a single integral unit. Such a device should be capable of positioning itself on a surface curved along any of the x and y axes while maintaining a thickness within the predetermined limit (e.g., less than 5 mm). Additionally, the device should automatically assume its intended position on a glazing surface.

[0026] The present disclosure generally relates to a display device in a vehicle. More particularly, the present disclosure relates to a display device and system for automotive glazing in the vehicle.

[0030]

[0027] FIG. 1A illustrates a vehicle 100 A in an exemplary environment in which the techniques of the present disclosure may be implemented, in accordance with some embodiments of the present disclosure. The vehicle 100A may be a two-wheeler vehicle, a four-wheeler vehicle, or multi-wheeler vehicles being parked or moving on a road, lane, track, etc. In an embodiment, the vehicle 100 A include a plurality of glazing units (or glazing) 102, a plurality of vertical structural supports 104, etc., but not limiter thereto.

[0031]

[0028] The plurality of glazing units 102 may pertain to glass windows of the vehicle 100 A. As used herein, the term "glazing" refers to any glass or similar material within a structure or the installation of such material within a sash or frame. The plurality of glazing units 102 may include at least one of windshield or windscreen, backlite, sidelite, quarterlite, sunroof, or etc. The vehicle 100 A may be equipped with the plurality of glazing units 102 to allow visibility, safety, environmental protection, etc. to the user of the vehicle 100 A.

[0032]

[0029] The plurality of vertical structural supports 104 may also be referred as “pillar regions” 104. The pillar regions 104 may connect roof with body of the vehicle 100A for securely holding the plurality of glazing units 102. The pillar regions 104 may provide critical support for structural integrity and safety of the vehicle 100 A. The pillar regions 104 may be integrated with the plurality of glazing units 102 for maintaining vehicle rigidity, absorbing impact during collisions, ensuring passenger safety, or etc., but not limited thereto. A skilled person would appreciate the fact that there would be many other components in the vehicle 100 A, but those components are not discussed and explained herein for sake of brevity.

[0033]

[0030] FIG. IB illustrates a vehicle 100B equipped with a display device 106, in accordance with the present disclosure. The vehicle 100B may be same as the vehicle 100A of FIG. 1A. In an embodiment, the display device 106 may be mounted on any one of the plurality of glazing units 102 (alternatively referred to as an automotive glazing 102 of FIG. 1A), or on a black ceramic print (BCP) region, or on at least one pillar region 104 of the vehicle 100B. In an embodiment, the display device 106 may be integrated with the automotive glazing 102 for displaying information to an occupant inside the vehicle 100B or a user outside the vehicle 100B.

[0031] The display device 106 may display the information on a display portion of the display device 106. The information may be at least one of numbers, letters, alphanumeric characters, image, logo, patterns, etc., but not limiting thereto. The display device 106 may be used for displaying information to occupants of the vehicle 100B. The information to be displayed may be customized based on the user’s requirement. In one aspect, the display device 106 may display the information that may be viewable by users being outside the vehicle 100B.

[0034]

[0032] FIG. 2A illustrates a block diagram representation 200A of an automotive glazing system comprising the display device 106 and the automotive glazing 102, in accordance with an embodiment of the present disclosure. The display device 106 integrated with the automotive glazing 102 may display the information to the occupant either within the vehicle 100B or the user outside the vehicle 100B, or both. In an embodiment, the display device 106 may comprise at least one of a protective frame 210, a multi-layer Printed Circuit Board (PCB) 202, a spacer 206, and two or more light diffusing films 208. The display device 106 of the present disclosure may include various other modules / units which are not discussed herein for sake of brevity. The display device 106, including all the above components in a particular arrangement, may achieve a low form factor, in accordance with the present disclosure.

[0035]

[0033] In an embodiment, the multi-layer PCB 202 may incorporate various electronic components and external peripherals that enable communication between a vehicle’s electronic system and other devices. The multi-layer PCB 202 may include the various electronic components comprising a controller and a plurality of light emitting elements (LEDs) 204 mounted thereon, which may be detailed in below paragraphs. The multi-layer PCB 202 incorporating the essential electronic components may achieve low form factor of the display device 106, in accordance with the present disclosure.

[0036]

[0034] In an embodiment, the spacer 206 may be utilized for facilitating accommodation of the plurality of LEDs 204 on the multi-layer PCB 202. The spacer 206 may include a plurality of grooves on a first side for securely accommodating the plurality of LEDs 204. In one aspect, the plurality of grooves may also be referred to as “slots”. The plurality of grooves of the spacer 206 may be configured to facilitate efficient assembly, alignment, and integration of the display device 106 with the automotive glazing 102. The spacer 206 may comprise the plurality of grooves on the first side and two or more light diffusing films 208 on a second side.

[0035] In an embodiment, the spacer 206 may be a metallic strip with grooves designed to receive or enclose the plurality of LEDs 204. The spacer 206 may serve several functions that include channeling the light emitted by the plurality of LEDs 204, ensuring optimal light distribution on display surface of the display device 106 for proper light diffusion, absorbing the heat generated by the plurality of LEDs 204 to prevent overheating, providing a gap between the multi-layer PCB 202 and the light diffusing films 208 for heat dissipation, etc. Thus, the spacer 206 may be configured to act as a heat sink in the automotive glazing system 200. Further, the spacer 206 may be configured to separate the plurality of LEDs 204 from the at least two light diffusing films 208. The spacer 206 may be coated with an insulating material to electrically isolate the components around the spacer 206 to prevent short circuits. The spacer 206 may act as a base or surface to support the placement of the two or more light diffusing films 208 for consistent light diffusion. The spacer 206 may be filled with some light diffusing ink or solution which, after hardening, diffuses light. Thus, the spacer 206 may be filled with light diffusing solution that diffuses light after hardening.

[0037]

[0036] In an embodiment, the two or more light diffusing films 208 may be placed over the spacer 206 on the second side. The two or more light diffusing films 208 may be configured to display the information on the display device 106. The two or more light diffusing films 208 may display the information upon receiving control signals from the controller.

[0038]

[0037] In one embodiment, the light diffusing films 208 may (also be referred to as optical film layers) include a plurality of diffusers arranged in a stacked configuration. For example, the light diffusing films 208 may include a first diffuser and a second diffuser positioned on top of the spacer 206. Further, the light diffusing films 208 may comprise a diffuse reflection layer and a polarizer tint layer for providing a black and seamless finish. The light diffusing films 208 may be produced from a material chosen for its properties, including light diffusion capabilities, haze, transmittance, thickness, surface finish, flexibility, and durability.

[0039]

[0038] In another embodiment, the light diffusing films 208 may be designed to provide a configuration of a hazy finish at one side, yet being transparent on the other side. For example, the light diffusing films 208 may include having one side featured with a smooth finish and having direct contact with the spacer 206 and the other side featured with a matte finish (i.e., rough face) facing the glazing 102 to produce a diffusive light effect. The configuration of the light diffusing films 208 may ensure brightness of light emerging from the matte finish with uniformly distributed after passing through tint film. The light diffusion films 208 may be tinted globally or selectively by placing the rough face to face the glazing. The light diffusion films 208 may have the rough face to face the glazing 102 for obtaining optimal light diffusion. The light diffusion films 208 may be made using optical film material (e.g., Lexan Polycarbonate, etc.) with additives to enable uniform diffusion in a thin film. High- refractive-index polymers or coatings in the polycarbonate film may increase diffusion efficiency, while adding titanium dioxide (TiCE) to the polymer matrix to enhance light scattering without requiring a thick layer. Thus, at least two light diffusing films 208 (e.g., a first light diffusing film and a second light diffusing film) may be stacked together to uniformly diffuse light emitted by the plurality of LEDs 204.

[0040]

[0039] In an additional embodiment, the light diffusion films 208 may incorporate advanced techniques for light scattering and color diffusion. Gradient layering is employed, where the Lexan sheet contains multiple diffusive layers, each fine-tuned for specific lightwavelengths, enabling efficient scattering of various colors. Alternatively, a light-scattering film may be laminated on one or both sides of the Lexan, providing optimal diffusion across the visible spectrum. The Lexan diffuser sheet, typically in white colour, diffuses the source light color, and when paired with red-blue-green (RGB) LEDs to facilitate the diffusion of various colors effectively. The number of diffusing films and number of LEDs may be customized based on the information to be displayed and according to the user’s requirement.

[0041]

[0040] Advantegously, by incorporating light diffusion films as described herein, LED spotting may be arrested by using Titanium dioxide (TiO2) modified Polycarbonates (PC) thin sheet having a thickness less than 0.7 mm. Further, adding polarizer film on the thin sheet may result in the sharp edges and aesthetics with seamless finish, thus realizing sharp and cool lighting.

[0042]

[0041] In an embodiment, the protective frame 210 may be provided around a periphery of the multi-layer PCB 202 to form an integrated display assembly. The protective frame 210 comprises a step provided on a first side to securely hold the multilayer PCB 202. Further, the protective frame 210 comprises a step provided on a second side to accommodate the two or more light diffusing films 208. Furthermore, the protective frame 210 may include the spacer 206 between the plurality of LEDs 204 and the two or more light diffusing films 208. Thus, the protective frame 210 may be properly aligned with components of the multi-layer PCB 202 to form the integrated display assembly, in accordance with the present disclosure.

[0043]

[0042] In an embodiment, the protective frame 210 may accommodate the different components of the display device 106 to form the integrated display assembly. Further, the protective frame 210 may comprise slots or pins to hold the different components of the display device 106 in place while being held in place by pressure against the automotive glazing 102. The display device 106 may be mounted against the automotive glazing 102 in such a way that the two or more light diffusing films 208 face the automotive glazing 102.

[0044]

[0043] In one embodiment, the protective frame 210 may be configured to fix aligning with a curvature of the automotive glazing 102. The protective frame 210 may be fabricated / manufactured using a suitable injection molding process, such as over molding or insert molding. The protective frame 210 fabricated using the injection molding process may ensure precise shaping and durability of the integrated display assembly. Alternatively or additionally, the protective frame 210 may be fabricated using 3 -dimensional (3D) printing techniques, such as fused deposition modeling (FDM), stereolithography (SLA), or selective laser sintering (SLS), but not limited thereto. The choice of fabrication technique may depend on factors such as the desired material properties, complexity of the curvature, and production requirements. The protective frame 210 may be manufactured with non-malleable material in order to maintains its structural rigidity against external impacts, fluid, temperature exposures, etc. Thus, the protective frame 210 may be manufactured using injection moulding or 3D printing to match a curvature of the glazing 102.

[0045]

[0044] In one embodiment, the multi-layer PCB 202 act as a back casing cover for the protective frame 210. The protective frame 210 provided around the periphery of the multi-layer PCB 202 may form the integrated display assembly.

[0046]

[0045] In an exemplary embodiment, the automotive glazing 102 may include a laminated glazing in which two or more layers of glass or similar materials are fused together with an interlayer of polymer in the middle. The fusion process may be achieved by applying pressure and heat, which strengthens the laminated glazing and helps prevent the two or more layers of glass or similar materials from breaking.

[0047]

[0046] In an embodiment, the display device 106 may adaptively integrate into the glazing 102 or a pillar unit of an automobile by integrating display, control and casing elements as a single unit and not dispersed across sections, thus making the entire device easily serviceable, visibility to the user outside of the vehicle 100B.

[0048]

[0047] The techniques of the present disclosure ensure that the display device 106 (specifically, the protective frame 210) may take desired shape and curvature of the automotive glazing 102. Furthermore, the display device 106 may achieve a low form factor below a predetermined threshold (e.g., thickness less than 5 mm). The protective frame 210 provided around the periphery of the multi-layer PCB 202 may self-align depending on curvature of the glazing surface. Furthermore, the present disclosure ensures that the thickness of the integrated display assembly is less than 5 mm. The display device 106 having low form factor may reduce issues such as spotting.

[0049]

[0048] FIG. 2B illustrates an exemplary block diagram of an automotive glazing system 200B of the vehicle 100B, in accordance with the present disclosure. In an embodiment, the automotive glazing system 200B may comprise the automotive glazing 102 (also referred to as a glazing unit) and the display device 106 configured to be mounted against the automotive glazing 102. The display device 106 may include the multi-layer PCB 202 comprising a controller 212, the plurality of LEDs 204 mounted thereon.

[0050]

[0049] The controller 212 may be configured to control illumination of the plurality of LEDs 204 and display the information on the at least two light diffusing films 208 through the automotive glazing 102.

[0051]

[0050] In an embodiment, the controller 212 may include at least one processor communicatively coupled with a memory, input-output (I / O) peripherals, etc. on a single chip microprocessor / microcontroller unit. The controller 212 may control other portions of an electronic system of the vehicle 100B, usually via the I / O peripherals. The controller 212 may communicate with the electronic system of the vehicle 100B. Further, the controller 212 may be configured to display the information to the user via the display device 106.

[0052]

[0051] In an embodiment, the plurality of LEDs 204 may include one or more light emitting sources for illuminating the display device 106. The plurality of LEDs 204 may include, but are not limited to, at least one Light Emitting Diode (LED), Organic Light Emitting Diode (OLED), any other suitable solid-state light sources, or etc. The plurality of LEDs 204 may be selected based on one or more factors such as power efficiency, brightness requirements, or the intended application of the display device 106. Furthermore, quantity of the plurality of LEDs 204 may vary depending on the complexity, size, and resolution requirements of the display device 106.

[0053]

[0052] In an embodiment, the multi-layer PCB 202 may be structurally arranged with a plurality of layers to provide rigid support to the display device 106. The plurality of layers of the multi-layer PCB 202 is not limited to any specific number of layers, in accordance with the present disclosure. In an exemplary embodiment, the multi-layer PCB 202 may include at least two layers. In another exemplary embodiment, the multilayer PCB 202 may include four layers. The number of layers of the plurality of layers may be varied based on the design requirements, or the intended application of the multi-layer PCB 202.

[0054]

[0053] In an embodiment, the multi-layer PCB 202 may include at least four layers which include a top conductive layer, one or more thermal management middle layers, and a bottom non-conductive layer. The multi-layer PCB 202 with the plurality of layers may include arrangement of at least one of the conductive layer, the one or more thermal management layers, or the non-conductive layer. In an exemplary embodiment, the plurality of layers may be arranged in such a way that the conductive layer being top layer having LEDs mounted thereto, the one or more thermal management layers being middle layer, and the non-conductive layer being bottom layer of the multi-layer PCB 202 forming the rear side of the display device 106.

[0055]

[0054] In one exemplary embodiment, the top conductive layers may effectively house the essential electronic components and external peripherals of the integrated display assembly. Further, the one or more thermal management middle layers may able to achieve advanced thermal dissipation. Furthermore, the thermal management layers may provide additional surface area for heat distribution, significantly improving the PCB's overall thermal performance under demanding operating conditions. In the multi-layer PCB 202, utilizing the aluminum material to form the bottom layer may help to dissipate heat effectively during communication process, particularly in high-power applications. Furthermore, aluminum material may be utilized to form the bottom layer of the multi-layer PCB 202 that serves as an efficient thermal management solution.

[0056]

[0055] In an embodiment, the bottom non-conductive layer may act as a part of the protective frame 210 for protecting the integrated display assembly. In another embodiment, the multi-layer PCB 202 may incorporate increased thickness in one or more layers to enhance heat conduction. In one exemplary embodiment, the bottom layer of the multi-layer PCB 202 may be configured as a non-conductive back case. By utilizing the last layer of the multi-layer PCB 202 as a non-conductive layer, it not only provides a robust protection for internal components but also contributes to electromagnetic shielding, enhancing the overall durability of the system. This approach improves the ability of the multi-layer PCB 202 to distribute heat uniformly, reducing the risk of localized hot spots and ensuring the thermal stability of critical components.

[0057]

[0056] In an embodiment, the controller 212 and the plurality of LEDs 204 are mounted on the top conductive layer and the bottom non-conductive layer acts as a back case of the multi-layer PCB 202 to achieve an integrated display assembly and a low Form factor.

[0058]

[0057] In an embodiment, the display device 106 may include the spacer 206 with a plurality of grooves on a first side of the spacer 206. The plurality of grooves of the spacer 206 may receive the plurality of light emitting elements.

[0059]

[0058] In an embodiment, the display device 106 may include at least two light diffusing films 208 arranged on a second side of the spacer 206. Further, the display device 106 of the automotive glazing system 200B may include the protective frame 210 provided around the periphery of the multi-layer PCB 202 to form an integrated display assembly. Further, the controller 212 is communicatively connected with the plurality of LEDs 204 and is configured to control illumination of the plurality of LEDs 204 to display information on the at least two light diffusing films 208 through the automotive glazing 102.

[0060]

[0059] In an embodiment, the display device 106 having the protective frame 210 provided around the periphery of the multi-layer PCB 202 may automatically selfaligns on the glazing surface. Further, the protective frame 210 may be configured to self-position on the glazing surface. The present disclosure ensures to achieve the low Form factor (i.e., thickness of the integrated display assembly ranges between 4- 4.9 mm), in accordance with the present disclosure.

[0061]

[0060] Furthermore, the separation of conductive and non-conductive layers of the multi-layer PCB 202 may optimize performance and simplifies the manufacturing process of the integrated display assembly.

[0062]

[0061] In an additional embodiment, the multi-layer PCB 202 may include ground pads in the bottom layer to improve thermal performance. For example, the ground pads may act as effective heat sinks, absorbing and dissipating heat efficiently within the layers of the multi-layer PCB 202. The inclusion of thermal vias may connect the ground pads with other layers to further enhance heat transfer and dissipation across the multi-layer PCB 202.

[0063]

[0062] In an embodiment, the multi-layer PCB 202 may include at least one power supply unit, a communication unit, one or more input-output (I / O) connectors, or etc., but not limited thereto, for communicating with the vehicle 100B (not represented in figures for the sake of brevity).

[0064]

[0063] In an exemplary embodiment, the power supply unit may be provided for providing necessary electrical supply to the components integrated on the multilayer PCB 202. The power supply unit may be configured to deliver a stable voltage and current for ensuring reliable operation of the electronic components connected with the multi-layer PCB 202.

[0065]

[0064] In another exemplary embodiment, the communication unit may be mounted on the multi-layer PCB 202 for facilitating data exchange with an external system of the vehicle 100B. The communication unit may support wired protocols, such as Universal Asynchronous Receiver-Transmitter (UART), Serial Peripheral Interface (SPI), or Inter-Integrated Circuit (I2C), or wireless protocols, such as Bluetooth or WiFi, depending on the application requirements.

[0066]

[0065] In one embodiment, the one or more I / O connectors may serve as an interface to connect the display device 106 with the external system of the vehicle 100B. The one or more I / O connectors may support different formats (e.g., universal serial bus (USB), High-Definition Multimedia Interface (HDMI), proprietary automotive connectors, or etc.) for allowing transfer of power, control signals, or display data between the multi-layer PCB 202 and the external system of the vehicle 100B.

[0067]

[0066] FIG. 3A-3B illustrate schematic representation of a protective frame 210, in accordance with the present disclosure. FIG. 3A represents a front view 300A of the protective frame 210 and FIG. 3B represents a rear view 300B of the protective frame 210. The protective frame 210 (also referred to as casing or cover) may be configured to enclose the multi-layer PCB 202 and other components of the integrated display assembly. The protective frame 210 may include a curvature that follows curvature of the automotive glazing 102. The protective frame 210 may include a space 302 for applying sealant and a space 304 for lacing the multi-layer PCB 202. Further, a tight seal between the automotive glazing 102 and the protective frame 210 may be applied using sealants to ensure crisp display of elements without distortion. The configuration of the protective frame 210 may ensure achieving the low Form factor, in accordance with the present disclosure.

[0068]

[0067] FIG. 3C-3D illustrate schematic representation of the protective frame 210 comprising various components of the display device 106, in accordance with the present disclosure. FIG. 3C represents a front view 300C of the protective frame 210 and FIG. 3D represents a rear view 300D of the protective frame 210. The protective frame 210 may include a front side which acts as a display area 306 for displaying information and a rear side which acts as a non-display area 308 having the bottom non- conductive layer of the multi-layer PCB 202. Further, the multi-layer PCB 202 may act as a part of the protective frame 210, together shielding the integrated display assembly.

[0069]

[0068] The bottom non-conductive layer of the multi-layer PCB 202 acts as the back case to achieve the low Form factor in the integrated display assembly, in accordance with the present disclosure.

[0070]

[0069] In an embodiment, the display device 106 may be removed from the automotive glazing 102 using only with specialized tools such as ultra-violet (UV) or infra-red (IR) lamps, or other suitable equipment capable of softening adhesives, loosening fasteners, or etc. In another embodiment, the display device 106 may facilitate safe detachment of the integrated display assembly without damaging the surrounding components or glazing surface without the specialized tools.

[0071]

[0070] In an embodiment, the display device 106 may enable proper fixing of the components inside or outside the vehicle 100B. For example, if the display device 106 is not properly fixed may negatively be impacted by temperature, humidity, or other weather conditions, etc. Thus, the driving support systems may be associated with various structural complications and limitations concerning the fixation of components to improve the performance of the driving support system.

[0072]

[0071] Additionally, the display device 106 mounted on the glazing unit 102 or other regions may overcome the challenges such as dismantling and reassembling complications, especially when display elements are dispersed across multiple sections. Furthermore, display elements of the display devices are not often flimsy, making them susceptible to being easily peeled off or removed without the need for specialized tools, where the flimsy display elements cannot be reliably positioned or mounted on surfaces that are curved along the x-y axes of the glazing unit 102.

[0073]

[0072] In an embodiment, the display elements and other components may be installed without requiring any special mating tools (e.g., screws and threads, pins, and holes, etc.). When installing the multi-layer PCB 202 with the display elements may not require dedicated heat sinks to manage heat dissipation by the multi-layer PCB 202.

[0074]

[0073] The techniques of the present disclosure may be incorporated to achieve the overall thickness of the display devices that do not exceed the predetermined limit (e.g., thickness less than 5 mm). Further, fixing of various components with overall thickness of the display devices within the predetermined limit (e.g., thickness less than 5 mm) overcome the issues such as spotting that arise in the driving support system. Therefore, the present disclosure may provide the display device 106 comprising display, control, and protective casing elements as a single integral unit. The display device 106 is capable of automatically positioning itself on a surface curved along both the x and y axes while maintaining a thickness within the predetermined limit (e.g., less than 5 mm). Additionally, the device may automatically assume its intended position on the glazing surface.

[0075]

[0074] FIG. 4 illustrates an exemplary block diagram 400 of the multi-layer PCB 202, in accordance with the present disclosure. The multi-layer PCB 202 may include various components such as a controller 402, a plurality of LEDs (404A, 404B, collectively referred to as 404), a plurality of LED drivers (406A, 406B, collectively referred to as 406), a communication unit 410, a serial interface (SWD) 412 (e.g., Serial Wire Debug), an input connector 414, a filter circuit 416 (e.g., input filter and protection circuit), a regulator circuit 418 (e.g., voltage regulator), but not limited thereto. The controller 402 is same as the controller 212 of Fig. 2B and the plurality of LEDs 404 of Fig. 4 is same as that of the plurality of LEDs 204 in Fig. 2A-2B, as described above.

[0076]

[0075] In one embodiment, controller 402 coordinates the operation of the multi-layer PCB 202 for processing input signals received via the input connector 414 and filtered through the filter circuit 416. The plurality of LEDs 404 in the display device 106 are controlled by plurality of LED drivers 406. The communication unit 410 may exchange data with the display device 106 or other vehicle systems, ensuring synchronized operation and accurate information transfer. The regulator circuit 418 supplies a consistent voltage to the LEDs 404, and their respective drivers 406, enabling controlled illumination. The LED drivers 406 may convert control signals from the controller 402 into precise current regulation for the LEDs. Finally, the SWD 412 enables real-time debugging and programming of the controller, thus allowing updates to improve functionality. Together, these components ensure the display device 106 integrated into the glazing 102 may operate reliably, displaying information effectively under varying environmental conditions.

[0077]

[0076] In an exemplary embodiment, the LED drivers 406 (e.g., transistors) may be used for switching or regulating the power supplied to the plurality of LEDs 404. For example, the LED drivers 406 may include at least one type of transistor, such as MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors), Field Effect transistors (FETs), and Insulated-Gate Bipolar Transistors (IGBTs) may be used to control LEDs. The LED drivers 406 may be chosen based on factors such as required current, voltage, switching speed, or etc. for driving the plurality of LEDs 404 effectively. In an embodiment, LED drivers 406 may be leveraged to control the plurality of LEDs 404 in order to simplify the firmware architecture that results in a more cost-effective and efficient design of the integrated display assembly.

[0078]

[0077] In one exemplary embodiment, the controller 402 may be a microcontroller and may act as a central control unit for the integrated display assembly. The controller 402 may be communicatively coupled with all the electronic components that are housed within the multi-layer PCB 202 and the communication unit 410. The controller 402 may include one or more general-purpose processors (e.g., INTEL®, Advanced Micro Devices® (AMD) microprocessors, microcontrollers, or etc.) and / or one or more special -purpose processors (e.g., digital signal processors or Xilinx® System On Chip (SOC) Field Programmable Gate Array (FPGA) processor, etc.).

[0079]

[0078] In one embodiment, the communication unit 410 may be communicatively coupled to the controller 402. The communication unit 410 may be configured to implement protocols such as LIN (Local Interconnect Network), CAN (Controller Area Network), or other suitable protocols to facilitate efficient data exchange between the ECU and display device. The communication unit may also support wireless communication protocols such as Bluetooth or Wi-Fi, enabling remote diagnostics or updates as needed. Thus, the communication unit 410 may be configured to facilitate data exchange between the controller 402 and the integrated display device for displaying the information.

[0080]

[0079] In one embodiment, the integrated display unit may operatively be connected to a master unit, which may be a microcontroller, controller, or any other suitable processing unit. The master unit may control the functionality of the integrated display device to display information, brightness adjustment, and operational modes. The communication between the integrated display unit and the master unit may be facilitated through a communication protocol, such as Controller Area Network (CAN), Local Interconnect Network (LIN), or any other protocol compatible with system requirements and regulations.

[0081]

[0080] In one embodiment, the serial interface 412 interface may provide a debugging and programming interface for the controller 402. The serial interface 412 allows for the testing, monitoring, and programming of the controller 402 in a nonintrusive manner, ensuring efficient debugging during development or maintenance.

[0082]

[0081] In one embodiment, the filter circuit 416 may include components such as capacitors, inductors, or transient voltage suppressors to filter noise and protect the ECU components from voltage spikes, surges, or other electrical anomalies. This ensures stable operation and protects sensitive components such as the LEDs and drivers.

[0083]

[0082] In one embodiment, the regulator circuit 418 may be configured to supply a stable and regulated voltage to the LEDs 404, LED drivers 406, controller 402, and other components of the ECU. The regulator circuit 418 may include linear regulators or switching regulators depending on the power efficiency requirements.

[0084]

[0083] It may be apparent to one skilled in the art that the above-mentioned components of the ECU are provided for illustration purposes. In an embodiment, the integrated display device may comprise a basic configuration made up of interchangeable components, in accordance with the present disclosure, without departing from the scope of the present disclosure. The integrated display device of the present disclosure including the one or more above-mentioned components, may be configured to display the information on the automotive glazing 102 and adaptively integrate into the glazing 102 or pillar unit of the vehicle 100B.

[0085]

[0084] In one embodiment, while the preferred mode of displaying information is on automotive glazing, the integrated display device may be positioned on any suitable surface across a wide range of applications beyond vehicles. For example, the integrated display device may be installed on building windows, interior walls, consumer electronic devices, or any other surface requiring information display. The display device is designed to achieve minimal thickness while ensuring high-quality display performance and uniform light diffusion.

[0086]

[0085] In an embodiment, the casing or protective frame 210 of integrated display assembly accommodate the multi-layer PCB 202 and other elements under a thickness ranging between 4-4.9mm. The casing automatically assumes its intended position on the glazing, the casing is curved but the multi-layer PCB 202 that sits on the casing can be flat. The entire display device is held together in place by pressure against the glazing. The integrated display assembly i.e., mechanical architecture is held to the glazing 102 using sealants or adhesives or may be using any mechanical sealants. Further, pins may be provided as an integral part of the casing to locate and hold the light diffusing films 208.

[0087]

[0086] In an embodiment, the protective frame 210 or casing in the integrated display assembly cannot be easily damaged or peeled off and the frame does not require any special fixtures for its positioning on the glazing. Further, the protective frame 210 may be non-malleable and maintains its structural rigidity against external impacts, fluid, and temperature exposures. At least one side of the protective cover follows the curvature of the glazing.

[0088]

[0087] In an embodiment, the display device 106 may be positioned on a surface that is curved at least of the x and y axes. Further, the display device 106 may automatically assume the intended position on the surface of the glazing. Advantageously, the display device 106 ensures uniform diffusion of light to display information at such minimal thickness value.

[0089]

[0088] The foregoing method descriptions and the process flow diagrams are provided merely as illustrative examples and are not intended to require or imply that the steps of the various embodiments must be performed in the order presented. As may be appreciated by one of skill in the art the order of steps in the foregoing embodiments may be performed in any order.

[0090]

[0089] The illustrated steps are set out to explain the exemplary embodiments shown, and it should be anticipated that ongoing technological development will change the manner in which particular functions are performed. These examples are presented herein for purposes of illustration, and not limitation. Further, the boundaries of the functional building blocks have been arbitrarily defined herein for the convenience of the description. Alternative boundaries can be defined so long as the specified functions and relationships thereof are appropriately performed. Alternatives (including equivalents, extensions, variations, deviations, etc., of those described herein) will be apparent to persons skilled in the relevant art(s) based on the teachings contained herein. Such alternatives fall within the scope and spirit of the disclosed embodiments. Also, the words "comprising," "having," "containing," and "including," and other similar forms are intended to be equivalent in meaning and be open ended in that an item or items following any one of these words is not meant to be an exhaustive listing of such item or items or meant to be limited to only the listed item or items. It must also be noted that as used herein, the singular forms “a,” “an,” and “the” include plural references unless the context clearly dictates otherwise.

[0090] Finally, the language used in the specification has been principally selected for readability and instructional purposes, and it may not have been selected to delineate or circumscribe the inventive subject matter. Accordingly, the disclosure of the embodiments of the disclosure is intended to be illustrative, but not limiting, of the scope of the disclosure.

[0091] With respect to the use of substantially any plural and / or singular terms herein, those having skill in the art can translate from the plural to the singular and / or from the singular to the plural as is appropriate to the context and / or application. The various singular / plural permutations may be expressly set forth herein for sake of clarity.

Claims

CLAIMS1. A display device (106) for a glazing (102), comprising: a multi-layer Printed Circuit Board (PCB) (202) comprising a controller (212) and a plurality of light emitting elements (204) mounted thereon; a spacer (206) with a plurality of grooves on a first side for receiving the plurality of light emitting elements (204); at least two light diffusing films (208) arranged on a second side of the spacer (206); and a protective frame (210) provided around a periphery of the multi-layer PCB (202) to form an integrated display assembly, wherein the controller (212) is communicatively connected with the plurality of light emitting elements (204) and is configured to control illumination of the plurality of light emitting elements (204) to display information on the at least two light diffusing films (208).

2. The display device (106) as claimed in claim 1, wherein the protective frame (210) comprises a step provided on a first side to securely hold the multi-layer PCB (202), and wherein a second side of the protective frame (210) is configured to accommodate the at least two light diffusing films (208) and the spacer (206) aligned with the multi-layer PCB (202) to form the integrated display assembly.

3. The display device (106) as claimed in claim 1, wherein a thickness of the integrated display assembly is less than 5mm.

4. The display device (106) as claimed in claim 1, wherein the integrated display assembly is assembled to the glazing (102) using adhesives or sealants.

5. The display device (106) as claimed in claim 1, wherein the spacer (206) is configured to act as a heat sink and separate the plurality of light emitting elements (204) from the at least two light diffusing films (208).

6. The display device (106) as claimed in claim 1, wherein the at least two light diffusing films (208) comprise a first light diffusing film and a second light diffusingfilm stacked together to uniformly diffuse light emitted by the plurality of light emitting elements (204).

7. The display device (106) as claimed in claim 1, wherein the multi-layer PCB (202) comprises at least four layers which include a top conductive layer, one or more thermal management middle layers, and a bottom non-conductive layer, wherein the controller (212) and the plurality of light emitting elements (204) are mounted on the top conductive layer, and wherein the bottom non-conductive layer acts as a back case for the integrated display assembly.

8. The display device (106) as claimed in claim 1, wherein the protective frame (210) is configured to be mounted against the glazing (102) such that the at least two light diffusing films (208) face the glazing (102) and are held in place by pressure against the glazing.

9. The display device (106) as claimed in claim 1, wherein the protective frame (210) is manufactured using injection moulding or 3D printing to match a curvature of the glazing.

10. The display device (106) as claimed in claim 1, wherein the glazing (102) comprises an automotive glazing.

11. An automotive glazing system, comprising: an automotive glazing (102); and a display device (106) configured to be mounted against the automotive glazing (102), wherein the display device (106) includes: a multi-layer Printed Circuit Board (PCB) (202) comprising a controller (212) and a plurality of light emitting elements (204) mounted thereon; a spacer (206) with a plurality of grooves on a first side for receiving the plurality of light emitting elements (204); at least two light diffusing films (208) arranged on a second side of the spacer (206); and a protective frame (210) provided around a periphery of the multi-layer PCB (202) to form an integrated display assembly,wherein the controller (212) is communicatively connected with the plurality of light emitting elements (204) and is configured to control illumination of the plurality of light emitting elements (204)) to display information on the at least two light diffusing films (208) through the automotive glazing.

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