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Title:
A TOUCH ACTIVATED DISPLAY SYSTEM FOR A VEHICLE
Document Type and Number:
WIPO Patent Application WO/2021/205476
Kind Code:
A1
Abstract:
A laminated glass structure for display within a vehicle is disclosed. The laminated glass structure comprises a first pane and a second pane laminated together by at least one interlayer there between. The laminated glass structure comprises an interactive unit embedded between the first pane and the second pane and operable by a user's hand. The laminated glass structure further comprises a display unit positioned adjacent to the interactive unit and communicable coupled to the interactive unit and the finger print detector. The display unit comprises one or more illumination device which are activated in response to the actions performed on the interactive unit. The control unit selectively actuates one of illuminations device in the display unit through a command signal, and wherein the smart controller controls a voltage supplied to the display unit.

Inventors:
CHANDRASEKARAN, Naveinah (IN)
THANGAMANI, Arunvel (IN)
Application Number:
PCT/IN2021/050351
Publication Date:
October 14, 2021
Filing Date:
April 08, 2021
Export Citation:
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Assignee:
SAINT-GOBAIN GLASS FRANCE (FR)
THANGAMANI, Arunvel (IN)
International Classes:
B32B17/10; G06F3/041; H03K17/96; B60Q3/208; B60J1/02
Attorney, Agent or Firm:
KUMAR, S. Giriraj (IN)
Download PDF:
Claims:
WE CLAIM

1. A laminated glass structure for touch- activated display, wherein said structure comprises: a first pane (102a) and a second pane (102b) laminated together by at least one interlayer

(102c) therebetween; an interactive unit (128) preferably embedded on the at least one interlayer (102c) and operable by a means for touch input, wherein the interactive unit is further configured to establish an authenticated connection to transmit a signal; and a display unit (202) positioned adjacent to the interactive unit and communicably coupled to the interactive unit (128), wherein the display unit comprises one or more illumination devices configured to be activated in response to the actions performed on the interactive unit; wherein the laminated glass structure is operably coupled to a control unit configured to selectively actuate one of illuminations device in the display unit on receiving the signal from the interactive unit.

2. The laminated glass structure as claimed claim 1, wherein the control unit (108) is configured to generate a command signal to the display unit to provide means for one or more functional controls on the laminated glass structure.

3. The laminated glass structure as claimed in claim 1, wherein the means for touch unit is a user’s finger, wherein the interactive unit is configured to authenticate the user.

4. The laminated glass structure as claimed in claim 1 , wherein the illumination devices (116) is at least one of an light emitting diode (LED), organic light emitting diode (OLED), electroluminescent unit, projection film, micro-led or a combination thereof.

5. The laminated glazing as claimed in claim 1, wherein the interactive unit (128) includes at least one of a touch sensor, pressure sensor or gesture sensor.

6. The laminated glazing as claimed in claim 1, wherein the interactive unit (128) is either transparent or non-transparent.

7. The laminated glazing as claimed in claim 1, wherein the display unit (202) is either transparent or non-transparent.

8. The laminated glazing as claimed in claim 1, wherein the interactive unit (128) is configured to transmit output signals directly to the control unit.

9. The laminated glazing as claimed in claim 1, wherein the interactive unit (128) is positioned between the interlayer (102c) and the first substrate (102a) or the second substrate (102b).

10. The laminated glazing as claimed in claim 1, wherein the interactive unit (128) optionally comprises an antenna for wireless communication with a sensor unit (206) and an engine control unit, ECU, (124) within the vehicle.

11. The laminated glazing as claimed in claim 1, wherein the interactive unit (128) is configured to communicate with an external unit.

12. The laminated glazing as claimed in claim 1, wherein the display unit (202) comprises a stacked arrangement with one or more layers of illumination devices.

13. The laminated glazing as claimed in claim 1, wherein the display unit (202) comprises illumination devices with varying values of colour and luminosity.

14. The laminated glazing as claimed in claim 1, wherein the control unit (108) is configured to transmit command signals directly to the display unit or through an engine control unit (124) in a vehicle.

15. The laminated glazing as claimed in claim 1, wherein the control unit (108) is configured to provide command signals to perform at least one of the following function and/or a combination thereof: a. control the content of the display; b. control the brightness of the display; c. control the illumination sequence of the display; d. control the illumination frequency of the display; and e. control the illumination color of the display.

16. The laminated glazing as claimed in claim 1, wherein the control unit (108) comprises: a. a relay unit configured to actuate one or more of the illumination devices; and b. a processor configured to receive inputs from the interactive unit (128) and the finger print detector and generate command signals.

17. The laminated glazing as claimed in claim 1, wherein the interactive unit (128) comprises a switch, wherein said switch includes any one of a circular switch, a horizontal and vertical switch or a double hand switch and/or a combination thereof.

18. A system for display within a vehicle, wherein the system comprises: a laminated glass structure as claimed in claim 1 , wherein the laminated glass structure is configured to receive inputs through the interactive unit; a second display unit (204) embedded on a second glass structure, wherein the second display unit comprises one or more illumination devices; and an engine control unit (124) configured to actuate at least one of the illumination device present in the second display unit in response to the inputs received from the interactive unit.

19. The system as claimed in claim 18, wherein the second display unit (204) is configured to be actuated by a touch input received on the interactive unit of the laminated glass structure.

20. The system as claimed in claim 18, wherein the second display unit (204) is actuated when a touch input received by the interactive unit is authenticated by the control unit (108).

Description:
TECHNICAL FIELD

[0001] The present disclosure relates generally to a laminated glass for windshield of a vehicle and in particularly, to a display on the laminated glass for windshield of a vehicle.

BACKGROUND

[0002] Background description includes information that may be useful in understanding the present disclosure. 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.

[0003] Modern vehicles, especially automotive vehicles, are commonly equipped with a number of functional elements. Examples of functional elements include items such as a heater for a windshield and/or a rear window, wipers and washers for a windshield and/or a rear window, air conditioning, music control and seat heating, to name but a few. Each of these functional elements requires control, e.g. in the form of an on/off switch, and there will usually be one or more control panels with switches and the like to control the particular functional elements found on/in the vehicle. The control panels are usually located on and around the vehicle's dashboard, where they are readily accessible by the driver of the vehicle. However, the controls placed on the dashboard often causes distraction to the drivers. Furthermore, many of the functional elements in a modern vehicle are meant to be accessible by all occupants of the vehicle and not just the driver.

[0004] Moreover, many of the controls for the functional elements on/in a vehicle are only accessible from within the vehicle. There is no provision to easily control the functional elements from outside of the vehicle.

[0005] A laminated glazing, which incorporates an electrical device, especially in the form of displays are well-known in the prior art. Prior art W02007122426 provides one example of such automobile glazing. It discloses a laminated glazing, in the form of a roof window comprising an electrical device in the form of an electroluminescent lamp integrated in the laminate construction. Further, US20160159282 provides a plurality of rectangular organic electroluminescent displays laminated in the laminated glass. However, the electroluminescent device integrated in the laminated glazing as mentioned in the above prior arts is only for lighting and/or aesthetic purpose. Further, these prior art solutions do not disclose a laminated glazing which can be used for controlling the functional elements of the vehicle.

[0006] Reference is made to another prior art, JP-A-2004-169435 that discloses an immovable vehicle window panel which has a pressure sensitive “touch panel” attached onto one of its surfaces. The touch panel can control, for example, the locking and unlocking of the vehicle doors. A printed display is also provided on the window panel, defining the touch panel. When the touch panel is touched, two otherwise spaced and mutually insulated, electrically conductive layers are brought into contact with each other and the electrical contact is detected by control electronics, which is remote from the window panel. However, this prior art discloses a touch panel, which is provided on the outer surface of the window, where it is exposed to the external environment surrounding a vehicle into which it may be fitted and thus subject to degradation and weathering. Additionally, touch panel as per this prior art solution is prone to tamper as well. Further, the touch panel is limited to a single function and not suitable for a plurality of functional elements present in the windshield.

[0007] Another prior art, US8924076 discloses a laminated glazing with two glass panes and touch sensors. The vehicle glazing comprises touch sensors that are operable through human touch interaction near the glass panes and connectors electrically connected to the sensors. However, in the cited prior art the sensor element, illumination device and visual indicator are separated by a minimum distance with the use of multiple insulation layers resulting in increase in the overall thickness of laminated glazing. Moreover, the illuminating device used is LED which can be a pointed light source and non-uniform lighting. Further, the touch sensor element is with limited functionalities of a switch type, for example, turning ON’ and ‘off. Further, the touch control may be used by any user and there do not exist an authentication means for the touch controls.

[0008] In view of the prior art disclosed hitherto, there exists a need of a laminated glazing integrated with touch elements to control functional elements. Further, it is desirable to have a laminated glazing integrated with touch activated displays for a vehicle’s controls capable of communicating with external display. Furthermore, it is desirable to have a laminated glazing with touch elements that can be authenticated from inside and/or outside of the vehicle for controlling functional elements. SUMMARY OF THE DISCLOSURE

[0009] The main objective of the invention is to have a laminated glazing integrated with touch elements to control functional elements in the vehicle. Another objective of the present invention is to provide a laminated glazing integrated with a touch activated displays with authentication means. The laminated glazing can be used for controlling functional elements from within or outside the vehicle.

[0010] One aspect of the present disclosure provides a laminated glass structure for display within a vehicle. The laminated glass structure comprises a first pane and a second pane laminated together by at least one interlayer therebetween. The laminated glass structure comprises an interactive unit embedded between the first pane and the second pane and operable by a user’s hand. The laminated glass structure comprises a finger print detector positioned adjacent to the interactive unit, and operable by authentication of the user’s hand. The laminated glass structure further comprises a display unit positioned adjacent to the interactive unit and communicable coupled to the interactive unit and the finger print detector. The display unit comprises one or more illumination device which are activated in response to the actions performed on the interactive unit or the finger print detector. The display unit comprises a control unit configured to selectively actuate one of illuminations device in the display unit through a command signal, and wherein the smart controller controls a voltage supplied to the display unit.

[0011] According to an embodiment of the present disclosure, the illumination devices is at least one of an LED, OLED, electroluminescent strip, projection film or a combination thereof. The interactive unit is at least one of a touch sensor, pressure sensor or gesture sensor. The interactive unit may be transparent or non-transparent. The display unit can be transparent or non-transparent. The interactive unit is configured to transmit output signals directly to the control unit. The interactive unit is positioned between the interlayer and the first substrate or the second substrate. The display unit comprises a stacked arrangement with one or more layers of illumination devices positioned vertically or horizontally. The display unit further comprises illumination devices with varying values of color and luminosity. The control unit transmits command signals directly to the display unit or through an Engine Control Unit (ECU) in the car. [0012] According to an embodiment of the present disclosure, the laminated glazing can be used to control functional elements within the vehicle. The control unit in the laminated glazing may be used to provide command signals to perform one or a combination of the following functions: a. Control the content of the display; b. Control the brightness of the display; c. Control the illumination sequence of the display; d. Control the illumination frequency of the display; and e. Control the illumination color of the display.

[0013] According to another embodiment of the present disclosure, a system for display within a vehicle is disclosed. The system comprises a laminated glass structure, wherein the laminated glass structure is configured to receive inputs from a user through the interactive unit. The system comprises a second display unit embedded on a second glass structure, wherein the second display unit comprises one or more illumination devices. The system comprises an engine control unit which is configured to actuate at least one of the illumination device present in the second display unit in response to the inputs received from the interactive unit.

[0014] Other features and aspects of this disclosure will be apparent from the following description and the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Embodiments are illustrated by way of example and are not limited in the accompanying figures.

[0016] FIG. 1A illustrates a cross-sectional view of a touch activated display unit according to an embodiment herein.

[0017] FIG. IB illustrates a cross-sectional view of a touch activated display unit made using glass assembly used; according to an embodiment herein.

[0018] FIG. 1C illustrates a cross section view of a touch activated display unit made using glass assembly used; according to an embodiment herein.

[0019] FIG. ID illustrates an exemplary view of the touch activated laminated glazing mentioned in FIG. 1 A- 1C, according to an embodiment herein.

[0020] FIG. 2 illustrates an improved touch activated display system 200 for a vehicle herein. [0021] FIG. 3 illustrates an example of the interactive unit according to an embodiment of the invention.

[0022] Skilled artisans appreciate that elements in the figures are illustrated for simplicity and clarity and have not necessarily been drawn to scale. For example, the dimensions of some of the elements in the figures may be exaggerated relative to other elements to help to improve understanding of embodiments of the disclosure.

Detailed Description

[0023] The present disclosure is now discussed in more detail referring to the drawings that accompany the present application. In the accompanying drawings, like and/or corresponding elements are referred to by like reference numbers. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or the like parts.

[0024] In an embodiment of the present disclosure, it provides an improved laminated glass structure for a windshield of a vehicle incorporating other functions in addition to the usual one. The present invention relates to a laminated glazing integrated with touch elements to control functional elements in the vehicle. Additionally, the present invention discloses a laminated glazing integrated with displays, preferably a touch activated displays with authentication means. The present disclosure further provides simple and low cost manufacturing and construction method of an improved laminated glass for windshield of a vehicle with new functions. The laminated glazing can be used for controlling functional elements from interior or exterior of the vehicle.

[0025] FIG. 1A is a cross sectional view of a touch activated display unit (102) made using glass assembly or laminated glazing according to an embodiment of the present invention. The laminated glazing comprises a first substrate (102a) having an outer face and a ceramic masked (104) (not shown) inner face, one or more interlayers (102c) disposed on the inner face of the first substrate (102a), a second substrate (102b) disposed on the interlayer (102c). The laminated glazing comprises an illumination device like electroluminescent (EL) device (116) connected to connector element (126). An interactive unit (128) is adapted to be positioned on the one or more interlayers (102c). The interactive unit (128) preferably includes a touch sensor.

[0026] In an embodiment of the invention, the interactive unit (128) when in contact with a conductive surface (like for example and not limited to a human), the conductive surface forms a capacitive circuit and a change in capacitance is used to trigger an electronic signal for required operation. The electronic signal can further trigger display in the electroluminescent device (116) and further provide functional controls. The laminated glazing integrated with one or more of the lighting elements and the sensing elements are operable through a touch preferably capacitive touch like a user’s finger touch to provide alerts/ notifications and functional controls. The touch element of the laminated glazing may also be actuated to be operable by way of resistive touch also. The other touch trigger may also be through other conductive or non-conductive objects.

[0027] In an embodiment of the invention, the display of the laminated glazing may include electroluminescent (EL). The EL device (116) is powered by a DC input voltage. The connector (126) is further provided to a power source (112). The power source (112) may be and not limited to a DC input voltage supplied by a battery.

[0028] In an embodiment, the first substrate (102a), the second substrate (102b) or both the first and the second substrate (102a, 102b) may be of glass or polymer. The polymer is polycarbonate (PC) or polypropylene (PP). Optionally, at least the first substrate (102a), the second substrate (102b) or both the first and the second substrate (102a, 102b) may be strengthened either chemically or thermally. The first substrate (102a), the second substrate (102b) or both the first and the second substrate (102a, 102b) may have a thickness of at least 0.5 mm.

[0029] According to an example, the thickness of the touch based display is 0.1 - 1.5mm. Thickness of the touch device varied from 0.1 -lmm. For use in windshield, thicker touch based substrates will be used and thinner touch devices will be fabricated if touch is realized with display as a Backlight. In an example, the touch sensitivity over glass of 3.2mm thickness maybe adjusted with the capacitance outside in a range from 0-70pF. It would be appreciated that these specifications have been provided by way of an example to enhance the understanding of one skilled in the art. [0030] In an embodiment, one or more interlayer 102c include a polymer. The interlayers 102c comprises a polymer selected from the group consisting of poly vinyl butyral (PVB), polycarbonate, acoustic PVB, ethylene vinyl acetate (EVA), thermoplastic polyurethane (TPU), ionomer, a thermoplastic material, and combinations thereof. The interlayer may have a thickness of at least 0.38mm. Optionally, the interlayers 102c is modified to accommodate one or more electroluminescent devices 116. Generally, the interlayer 102c is modified to assemble thicker electroluminescent device 116 in the laminated curved article 102. In some instances, the interlayer 102c is modified to accommodate two electroluminescent devices 116 placed on top of each other to display on both the sides of the laminated curved article 102. The interlayer 102c is modified by either cutting, pressing, grinding, heating or combination thereof. The cutting of interlayer (102c) is done manually or automatically by means of cutting fixtures. The grinding of interlayer (102c) is done by means of abrasive wheel or pencil grinders which are electrically or pneumatically operated. Further, the interlayer (102c) can be modified by heating. In this, the electroluminescent device (116) is disposed on the interlayer (102c) by means of a hot stamping tool in which stamping is done by means of physical pressure and at a defined temperature. In some instances, the modification of interlayer (102c) by heating method is also done by means of having an adhesive backing in electroluminescent device (116) along with hot stamping to ensure much higher bonding between interlayer (102c) and the electroluminescent layer (116).

[0031] The inner face of the first substrate (102a) may be masked with a ceramic layer (not shown) along the periphery. The laminated glazing with touch enabled display described herein may be utilized in vehicles such as automobiles for glazing such as windshields, backlite, windows or sidelites, mirrors. The electroluminescent device (116) is disposed between the two interlayers (102c). The electroluminescent device (116) may be placed in the ceramic masked inner face of the first substrate (102a) to eliminate any degradation in performance due to exposure of UV. [0032] FIG. IB is a cross section view of a touch activated display unit 104 made using glass assembly used according to an embodiment of the invention. The laminated glazing comprising a first substrate (102a) having an outer face and inner face, one or more interlayers (102c) disposed on the inner face of the first substrate (102a), a second substrate (102b) disposed on the interlayer (102c). In the present embodiment, the laminated glazing comprises a fingerprint sensor (130) positioned between the first substrate (102a) and the second substrate (102b). Further, a touch sensor (127) is positioned below the fingerprint sensor (130). A display device is positioned above or below the fingerprint sensor. When a user touches the fingerprint sensor (130), the user is authenticated and further display device is activated by turning on the display. In another scenario, an area around the display device is activated to indicate the user of a touch point. Further, the area which is activated by the display device is touched by the user to authenticate via the sensor (130) and further activate the touch controls (127).

[0033] According to an embodiment, the touch sensors and the display device may be embedded by a suitable method on the glass or Interlayer. The touch sensors and the display device are preferably embedded on the one or more inter layers. Further, the glazing may comprise a plurality of touch sensitive layers. Furthermore, the glazing may comprise a plurality of display devices stacked vertically or horizontally. Still further, the display devices may comprise a conductive layer, an insulating/ dielectric layers, a phosphor layer, and an encapsulate layer. The encapsulate layer for electrical, thermal insulation, water and corrosion resistance.

[0034] In an embodiment, the display device and the touch sensors may be integrated between the glazing with one or more interlayers. The display device and touch sensors may be integrated on the tempered glass with a plastic blackening or encapsulated locally.

[0035] In another embodiment, the touch activated display unit comprising touch sensors and one or more display devices may be printed on either on a second face of the glazing or on first or second face of the interlayer. In another example, the touch activated display unit may be of patch type placed on either second or third face of the glazing or first or second face of the interlayer. In a preferred embodiment, touch activated display or touch are embedded on the interlayer. Further, the touch activated display unit can be integrated or fabricated on either one or both the side of transparent ELor LED or OLED technology to enable both inside or outside vehicle use.

[0036] FIG. 1C is a cross section view of a touch activated display unit (106) made using glass assembly used according to an embodiment of the present invention. The laminated glazing comprising a first substrate (102a) consisting an outer face and inner face, one or more interlayers (102c) disposed on the inner face of the first substrate (102a), a second substrate (102b) disposed on the interlayer (102c). The laminated glazing further comprises a protection layer (131) disposed on the interactive unit (132). The interactive unit (132) is positioned on one or more interlayer (102c). Further, a display device in the form of a projection layer (133) is positioned below the interactive unit (132).

[0037] In an example, the protection layer (131) is made of a flexible polymer. The protection layer (131) comprises a material selected from the group consisting of ethylene propylene rubber, polyimide and/or cross-linked polyethylene. The protection layer ( 131 ) is provided for maintaining the electrical, thermal and mechanical integrity of connector element of display device in case of any external impact on the laminated curved article like stone impact, crashes or bumps. The connector element is either completely or partially embedded in the laminated curved article. The connector element (126) can be directly printed onto the first or second substrate (102a, 102b) or the interlayer by means of screen printing with multiple layer onto one another. The connector element (126) can also be deposited over the first or second substrate (102a, 102b) directly either by physical vapor deposition coating or chemical vapor deposition coating. The connector element (126) can be a separate thin film patch which is can be fixed by adhesive either on first or second substrate (102a, 102b) or on the interlayer (102c).

[0038] FIG. ID illustrates an exemplary view of the touch activated display unit mentioned in FIGs. 1A-1C. The touch activated display unit is provided on the laminated glazing to provide functional controls, alerts, notifications or icons. The laminated glazing indicates touch controls (140) provided by the interactive unit are for controlling functions within the vehicle. The touch controls may provide multiple functions like zoom in, zoom out, linear, vertical or circular sliders. Further, the glazing indicates alerts/notifications or patterns (142) through the display unit.

[0039] FIG. 2 illustrates an improved touch activated display system (200) for a vehicle herein according to an embodiment of the present invention. The touch activated display system includes touch elements to control functional elements in the vehicle. The touch activated display system can be used for controlling functional elements from within or outside the vehicle.

[0040] The system includes laminated glazing (200) embedded with an interactive unit (201), and display unit (202). The said laminated glazing (200) is further operably coupled to a control unit (108) communicatively coupled to the display unit (202), and the interactive unit (201).

[0041] The power unit (122) may be partially or fully encapsulated or embedded within the lazing or fully outside the glazing. The laminated glazing includes a plurality of connectors electrically connected to the power unit (122). The power unit (122) can be a DC input voltage or AC input voltage. The power unit (122) can be connected to the battery of the vehicle. In an embodiment of the invention, the power supply to the glazing may be byway of wires that give power to the functional element (interactive unit or the touch element) or the display element in the glazing. The said wires may be partly in the laminated glazing and partly outside the glazing connected to a control unit or an ECU. [0042] In an embodiment, the connectors may be FPC pins or ribbon connectors embedded or printed directly on the glass substrate or the interlayer. Further, bus bars may be used for both AC or DC supply or a combination of AC and DC supply to power up effectively display unit operating in both AC (example and not limited to EL) and DC Source (exampled and not limited to LED / Touch Sensor).

[0043] The interactive unit (121) comprises at least one of touch sensor, fingerprint sensor, pressure sensor or gesture sensor. The fingerprint sensor is a biometric sensor that identifies a unique pattern of a user’s finger. The fingerprint sensor authenticates the user. The touch sensor includes a capacitive circuit which in is connected to control unit for measuring a capacitive signal at the sensor when a change of capacitive signal is detected. In response to the detection in capacitance signal, the control unit (108) transmits a command to control the operation of the functional elements in the vehicle. The interactive unit (201) is fabricated to have multiple functions like zoom in, zoom out, linear or circular sliders. The interactive unit (201) maybe transparent or non-transparent. The functional elements include music controls, air-condition controls, HVAC controls, sensor levels, seat positions, ambient lighting, engine ON/Off, infotainment and the like.

[0044] The control unit is coupled to the display unit (202). The command signal from the control unit is received by the display unit (202). The display unit is activated or de-activated in response to the command signal to provide visual indicators. The display unit (202) includes one or more illumination devices in various patterns to form visual indicators. The illumination devices may be positioned on the first substrate or the interlayer or the second substrate to be viewable from the interior of the vehicle, exterior of the vehicle, or both. Lurther patterns may be printed on the glazing to indicate various icons and patterns or symbols. The purpose of the at least one icon is to provide information to a user of a vehicle into which such a glazing may be fitted, regarding the nature and location of the sensor and the one or more external devices, constituting functional elements, it is adapted to control.

[0045] Thus, the laminated glazing with touch activated display which is typically used as a windshield or backlite or sun-roof, additionally, incorporates new functions designed for displaying one or more conditions of interest for the passengers in the vehicle such as: environment -related parameters, such as: temperature, relative air humidity, air quality and others; infotainment controls, engine controls, air-temperature controls, seating controls and the like. [0046] Examples of other functional controls include windshield heating element (for demisting and/or de-icing the windshield), windshield wipers, windshield washers, vehicle occupant's interior map/reacting light, rear window sunblind, rear window heating element, sun-roof open/close mechanism, sun-roof variable transmission mechanism, climate control system, seat heater, rear seat occupant's entertainment controls (e.g. for in-vehicle TV and/or DVD systems), interior light, in-vehicle telematics (e.g. GPS) and the like.

[0047] The touch activated display system provides secure functional since the touch controls are activated/ and/or de-activated upon authentication of a user. In an example, a touch activated display can be used to select a playlist and control volume of music. In another example, the touch activated display can be used to authorize a user to perform keyless opening of the vehicle. For keyless opening operation, the touch is activated from exterior of the vehicle fitted the proposed laminated glazing. The display unit would display ‘Green’ color on authorized entry and would display ‘red’ color on unauthorized entry with an Alarm after a pre-defined number of authentication attempt. In another example, the touch activated display can be used to authorize a user to perform ‘turning-on’ or ‘turning-off of the vehicle engine. The touch activated display system constitutes a plurality of icons/patterns developed with multiple colors and may illuminate at multiple luminosity levels.

[0048] In an embodiment of the invention is disclosed a touch activated display system is further coupled to the sensor unit (206) and engine control unit (124). The sensor (206) detects or sense one or more conditions to generate sensor data. The sensor unit (206) is mounted on suitable parts and/or mechanisms of the vehicle. The sensor data is displayed on the display unit (202) or an external display unit (204). The display unit (202) is communicatively coupled to the display unit (204) through wireless connection. The display unit of laminated glazing and the external display unit (202, 204) may comprise antennas for wireless transmission. Thus, in response to a touch received on the laminated glazing, the external display (204) may be activated to show alerts or notifications or icons. In an example, a traveler’s message in native language conveyed through the touch element of his/her windshield and translated through the controller to a local language and displayed to the driver through a transparent display technology embedded in the glass of another vehicle. [0049] FIG. 3 illustrates an example of the interactive unit. The interactive unit is a touch switch which receives user inputs and transmits signals to the engine control unit or display unit. The touch switch has a touch slider (360), a vertical slider (320), a touch button (340) for receiving user inputs. The touch switch includes silver conductors (380) for transmitting signals to the display unit and the engine control unit. The silver conductors (380) form a Matrix of conductive layers, whose can be formed where the capacitive sensitivity can be adjusted through the engine control unit or the composition of the silver conductors.

[0050] The touch switch further comprises a sensor oscillator circuit and a microcontroller through which the sensitivity can be changed. Further, the commands can be completed through interaction with ECU (to control Music/ Infotainment or any other functionalities). Further, the touch switch can be directly printed over the display substrate or be glued as a separate patch over the display area. The touch switch can control display through a backlight which will controlled through a controller unit.

[0051] According to an embodiment, the interactive unit comprises a switch with controls for Circular Switch, horizontal and vertical switch or double hand switch. The circular switch may be used for volume controls or illumination controls. The horizontal and vertical switch may be used for scrolling display, selecting songs from a playlist. The double hand switch may be used for zooming display.

[0052] According to an embodiment of the present invention, the interactive unit operates through human interaction through touch or near proximity without the requirement for physical contact. The interactive unit in the proposed glazing is durable, aesthetically more appealing and offers more intuitive user interfaces.

[0053] According to an embodiment of the present invention, the interactive unit and display unit is independently integrated in multiple glass structures and configured to communicate through the controller. The interactive unit and one or more display units may be transparent for giving an aesthetic appeal and for security purpose. By providing a switch arrangement in accordance with an embodiment of the present invention, the control of one or more functional elements associated with a vehicle may be reliably accessed from the interior or the exterior of the vehicle.

[0054] The bodywork of a vehicle typically includes a number of window openings — a rear window, a front window, side windows and optionally a roof window (either in the form of a conventional sun-roof or a full-area roof). A glazing according to the invention is especially suitable for fitting into any of these openings.

[0055] Note that not all of the activities described above in the general description or the examples are required, that a portion of a specific activity may not be required, and that one or more further activities may be performed in addition to those described. Still further, the order in which activities are listed is not necessarily the order in which they are performed.

[0056] Benefits, other advantages, and solutions to problems have been described above with regard to specific embodiments. However, the benefits, advantages, solutions to problems, and any feature(s) that may cause any benefit, advantage, or solution to occur or become more pronounced are not to be construed as a critical, required, or essential feature of any or all the claims.

[0057] The specification and illustrations of the embodiments described herein are intended to provide a general understanding of the structure of the various embodiments. The specification and illustrations are not intended to serve as an exhaustive and comprehensive description of all of the elements and features of apparatus and systems that use the structures or methods described herein. Certain features, that are for clarity, described herein in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features that are, for brevity, described in the context of a single embodiment, may also be provided separately or in a sub combination. Further, reference to values stated in ranges includes each and every value within that range. Many other embodiments may be apparent to skilled artisans only after reading this specification. Other embodiments may be used and derived from the disclosure, such that a structural substitution, logical substitution, or another change may be made without departing from the scope of the disclosure. Accordingly, the disclosure is to be regarded as illustrative rather than restrictive.

[0058] The description in combination with the figures is provided to assist in understanding the teachings disclosed herein, is provided to assist in describing the teachings, and should not be interpreted as a limitation on the scope or applicability of the teachings. However, other teachings can certainly be used in this application.

[0059] As used herein, the terms "comprises," "comprising," "includes," "including," "has," "having" or any other variation thereof, are intended to cover a non-exclusive inclusion. For example, a method, article, or apparatus that comprises a list of features is not necessarily limited only to those features but may include other features not expressly listed or inherent to such method, article, or apparatus. Further, unless expressly stated to the contrary, "or" refers to an inclusive-or and not to an exclusive-or. For example, a condition A or B is satisfied by any one of the following: A is true (or present) and B is false (or not present), A is false (or not present) and B is true (or present), and both A and B are true (or present).

[0060] Also, the use of "a" or "an" is employed to describe elements and components described herein. This is done merely for convenience and to give a general sense of the scope of the invention. This description should be read to include one or at least one and the singular also includes the plural, or vice versa, unless it is clear that it is meant otherwise. For example, when a single item is described herein, more than one item may be used in place of a single item Similarly, where more than one item is described herein, a single item may be substituted for that more than one item.

[0061] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The materials, methods, and examples are illustrative only and not intended to be limiting. To the extent that certain details regarding specific materials and processing acts are not described, such details may include conventional approaches, which may be found in reference books and other sources within the manufacturing arts.

[0062] While aspects of the present disclosure have been particularly shown and described with reference to the embodiments above, it will be understood by those skilled in the art that various additional embodiments may be contemplated by the modification of the disclosed machines, systems and methods without departing from the spirit and scope of what is disclosed. Such embodiments should be understood to fall within the scope of the present disclosure as determined based upon the claims and any equivalents thereof.

List of elements along with the reference numerals

102, 202: display unit

106: touch activated display unit

102a: first substrate

102b: second substrate

102c: int er layer (s) , 128, 201: interactive unit : a display device in the form of a projection layer: protection layer : interactive unit : control unit : power unit : external display unit : sensor unit : engine control unit : electroluminescent device : connector : fingerprint sensor : touch sensor : touch activated display system : touch slider : vertical / Horizontal Slider : a touch button for receiving user inputs : the touch switch includes silver conductors