# Patent

## Title
Trim component with concealed indicium

## Abstract

A vehicular trim component comprises a substrate having external and internal surfaces and a finish on at least one of the external and internal surfaces. An illumination source actuatable between an illuminated state and a non-illuminated state is positioned behind the substrate to direct light through the finish with the illumination source is in the illuminated state. A mask associated with the substrate defines at least a masked portion and an unmasked portion, wherein the unmasked portion transmits more light than the unmasked portion. The finish extends across both the masked portion and the unmasked portion to conceal visible differences between the masked portion and the unmasked portion when the illumination source is in the non-illuminated state. When the illumination source is in the illuminated state, light passes through the unmasked portion and the finish to provide a visible distinction between the masked portion and the unmasked portion.

## Background
CROSS REFERENCE TO RELATED APPLICATION
This application claims the benefit of U.S. Patent Application No. 60/593,677, filed Feb. 4, 2005.


FIELD OF THE INVENTION
The invention relates generally to a visual display. In one aspect, the invention relates to a display having indicia or other markings that are visually discernable only when an illumination source of the display is in an illuminated state. The display can be integrated into a variety of objects, including vehicular trim components.
DESCRIPTION OF THE RELATED ART
Automobiles comprise several types of decorative and functional vehicular trim components that are mounted to an exterior or interior surface of the automobile. Examples of external trim components include, but are not limited to, spoilers, door handles, license plate frames, and various bars, such as a lighting bar above the license plate and a bar for mounting a center high mount stop light (CHMSL). Some of these components include indicia or other visual markings. The visual markings can be static, such as decorative markings that customize the appearance of the vehicle or indicia to communicate information, such as the make or model of the vehicle (known as vehicle badging), to an observer. Other visual markings are dynamic or interactive, such as turn signal indicators and brake lights that illuminate to communicate an intended action of the driver. Another example of a dynamic visual marking is a keypad of a keyless entry system. Typically, the keypad is mounted on a door panel or a door handle and has a plurality of individual keys with numbers or letters thereon so that a user can depress the keys in a predetermined sequence to unlock the door of the vehicle.
Unfortunately, some of the visual markings, such as turn signal indicators, keypads, and controls on the interior of the vehicle (e.g., cruise control, radio, and climate controls) do not contribute positively to the aesthetic appearance of the vehicle. Even when these visual markings are not illuminated while not in use, the non-illuminated marking is viewable by an observer. Furthermore, some visual markings that are not used at all times but are always visually discernable can actually distract a driver. It is therefore desirable for these visual markings to be viewable only when they are employed. Additionally, the appearance of static visual markings, such as decorative markings, vehicle make/model indicia, and displays on the interior of the vehicle (e.g., instrument panel displays), can be drab and lackluster and, therefore, fail to create a desired appearance or fail to attract the desired attention to the visual markings. In the latter case, the vehicle manufacturer advantageously utilizes vehicle badging to not only identify the make and model of the vehicle but also as an advertising medium. A more visually captivating vehicle badging would be a more effective promotional tool. It is therefore desirable for a vehicular component to have visually alluring indicia or other markings.
Additionally, numerous items other than vehicular trim components have unexciting displays and controls and, therefore, suffer from similar deficiencies. Examples of such objects include household appliances, audio and video equipment, and signs. In today's competitive markets, the visual appearance of a product or a display associated with a product or a business can be a significant factor in a customer's purchase decision, and a stimulating visual appearance that sets one product or display apart from others can positively influence the customer in his or her purchase decision.
SUMMARY OF THE INVENTION
A vehicular trim component according to the invention comprises a substrate having an external surface, an internal surface, and a finish on at least one of the external and internal surfaces; an illumination source actuatable between an illuminated state and a non-illuminated state and positioned behind the substrate to direct light through the finish with the illumination source is in the illuminated state; and a mask associated with the substrate, wherein the mask defines at least a masked portion and an unmasked portion, wherein the unmasked portion transmits more light than the masked portion. The finish extends across both the masked portion and the unmasked portion to conceal visible differences between the masked portion and the unmasked portion when the illumination source is in the non-illuminated state, and wherein light passes through the unmasked portion and the finish when the illumination source is in the illuminated state to provide a visible distinction between the masked portion and the unmasked portion.
According one embodiment, the finish comprises a coating applied to the substrate across the masked portion and the unmasked portion. The coating can be paint, such as a metallic paint. The coating can include a tint so that the finish of the trim component can be matched to a vehicle on which the trim component is mounted.
According to another embodiment, the coating comprises a film applied to the at least one of the external and internal surfaces of the substrate. The film can be applied using a hydro-graphics process. Alternatively, the film can be insert molded with the substrate.
According to another embodiment, the finish is texturized to provide a desired feel to the external surface.
According to yet another embodiment, the finish is formed integral with the substrate.
According to another embodiment, the finish comprises at least one metal deposition layer on the at least one of the external and internal surfaces of the substrate.
According to one embodiment, the masked portion of the mask comprises a coating applied to the internal surface of the substrate. According to another embodiment, the masked portion of the mask comprises a coating applied to the external surface of the substrate.
According to another embodiment, the mask comprises a body separate from the substrate and having the unmasked portion formed as an opening therein. The mask can be mounted to the internal surface of the substrate.
According to another embodiment, the mask comprises an integral portion of an internal surface of the substrate, wherein the masked portions of the mask are thicker portions of the substrate than the unmasked portions. The unmasked portions can be formed by removing material from the internal surface of the substrate. The material can be removed by a laser-etching process.
According to yet another embodiment, the masked portion of the mask is printed onto the substrate. The masked portion can be printed by at least one of a silk screen, screen print, print pad process.
According to another embodiment, the masked portion of the mask is molded onto the internal surface of the substrate.
According to one embodiment, the illumination source comprises at least one light source selected from the group consisting of: a light-emitting diode, an incandescent light bulb, a fluorescent light bulb, an electroluminescent light source, a neon light, a light pipe received from a remote light source, a fiber optic-received light, a liquid-crystal display and a laser. According to another embodiment, the light source is a display screen, and the display screen is hidden by the finish when the display screen is in the non-illuminated state.
According to one embodiment, the unmasked portion defines an indicium. The indicium can be at least one of a trademark, one or more alphanumeric characters, a logo, a design, a symbol, a picture, an image, an indicator, and a frit.
According to one embodiment, the substrate is composed of a material selected from the group consisting of: a polymeric material, glass, a conductive material, and silicone.
According to one embodiment, the unmasked portion includes at least one optic area for distributing light passing through the unmasked portion.
According to another embodiment, the vehicular trim component further comprises a keypad comprising at least one key, wherein the keypad is not visually discernable when the illumination source is in the non-illuminated state. The trim component can be in the form of a door handle.
According to another embodiment, the substrate can be translucent. The finish can be on the internal surface of the substrate, and the mask can be applied to the finish.



BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a vehicle having an external trim component according to one embodiment of the invention.
FIG. 2 is a front elevational view of the external trim component of FIG. 1 with a concealed indicium of the external trim component in a non-illuminated state.
FIG. 3 is a front elevational view of the external trim component of FIG. 1 showing the indicium configured as a logo in an illuminated state.
FIG. 4 is a front elevational view of the external trim component of FIG. 1 showing the indicium configured as a turn signal in an illuminated state.
FIG. 5 is an exploded, perspective view of the external trim component of FIGS. 1-4.
FIG. 6 is an exploded, perspective view from a rearward direction of the external trim component of FIGS. 1-4 showing a mask inside the external trim component.
FIG. 6A is a cross-sectional view taken along line 6A-6A of FIG. 6.
FIG. 7 is a perspective view of a vehicle having an alternative embodiment of an external trim component.
FIG. 8 is a front elevational view of the alternative embodiment of the external trim component of FIG. 7 with a concealed indicium in a non-illuminated state.
FIG. 9 is a front elevational view of the alternative embodiment of the external trim component of FIG. 7 with the indicium configured as a logo in an illuminated state.
FIG. 10 is an exploded, perspective view of the alternative embodiment of the external trim component of FIGS. 7-9.
FIG. 11 is an exploded, perspective view from a rearward direction of the alternative embodiment of the external trim component of FIGS. 1-4 showing a mask inside the external trim component.
FIG. 12 is a front elevational view of the alternative embodiment of the external trim component of FIG. 7 with the indicium configured as a logo as well as a keyless entry pad, both shown in an illuminated state.
FIG. 13 is a perspective view of a vehicle having an alternative embodiment of an external trim component wherein the indicium is configured as a safety light.
FIG. 14 is a perspective view similar to FIG. 13, wherein the indicium is configured as a logo.
FIG. 15 is a perspective view similar to FIG. 13, wherein the indicium is configured as a puddle light.
FIG. 16 is a perspective view similar to FIG. 15, wherein the indicium is configured as another type of puddle light.
FIGS. 17A and 17B are exemplary flowcharts of methods for producing a substrate, a finish, and a mask of any of the several embodiments of the trim component with concealed indicium.



DESCRIPTION OF THE EMBODIMENTS OF THE INVENTION
Referring now the figures, FIG. 1 illustrates a vehicle 10 with an exemplary vehicular trim component 20 with a concealed indicium according to the invention. The trim component 20 is adapted to display indicia or other markings when the indicia or other markings are illuminated. When the indicia or other markings are not illuminated, they are completely undetectable by an observer, and the vehicular trim component 10 has an appearance identical to a trim component without any indicia or visual markings. As a result, the markings are hidden while not in use and do not detract from the physical appearance of the vehicle 10, and the trim component 20 is captivating and aesthetically pleasing when the markings are in illuminated.
As utilized herein, the term “indicium” refers to any sort of marking that can be visually observed. Examples of indicia include, but are not limited to, logos, numerical and textual characters, symbols, designs, images, and pictures. An exemplary design is a frit, which is commonly found on automotive glass and comprises a solid, opaque line or band and parallel lines of progressively smaller opaque dots for creating an illusion a gradual fade from opaque to transparent. The indicia can be communicative, functional, decorative, interactive, or a combination thereof.
As utilized herein, the term “trim component” can refer to any component located on the exterior or interior surface of the vehicle. The vehicle can be an automobile or other type of motor powered vehicle, such as a motorcycle, a scooter, an all-terrain vehicle (ATV), a snowmobile, a wave runner, a jet ski, or a boat. The trim component can be decorative, functional, or a combination thereof. Examples of exterior trim components include, but are not limited to, body side moldings; spoilers; door handles; license plate frames; hood, side, and brake louvers; truck caps and covers; and bars, such as a lighting bar above the license plate and a bar for mounting a center high mount stop light (CHMSL). Additionally, the trim component can be adapted to provide lighting under the vehicle hood, hood cosmetic lighting, truck bed lighting, and flashing, strobe, or message lighting for emergency vehicles, such as ambulances, fire trucks, and police cruisers. Other examples of trim components include numerous custom accessories typically added to the vehicle 10 by the vehicle owner or a specialist hired by the vehicle owner as compared to the manufacturer of the vehicle. Examples of interior trim components include, but are not limited to interior door handles, bezels for interior door handles, instrument clusters, gauges, odometer and speedometer displays, warning lamps, shifting mechanism position indicator, radio controls/knobs, climate control displays and controls, cruise control displays and controls, steering wheel mounted accessory controls (i.e., radio and cruise control controls), interior vehicle badging (e.g., on instrument panel, door panels, steering wheel), accessory lighting, identification labels (e.g., for cup holders, power outlet covers, shift knobs, glove box door), visor lighting, and LCD or other types of flat panel displays, such as displays for sound systems, global positioning systems, and vehicular imaging systems. Additionally, the trim component can be adapted to provide trunk interior lighting, safety lighting on an interior surface of the door that illuminate when the door is opened, and headliner trim lighting, such as task, ambient, and mood lighting.
The trim component is not limited to vehicular trim components or use with vehicles. The invention as described herein can also be used in non-automotive applications, including those having control mechanisms that interact with the user and would benefit aesthetically by being concealed or hidden while not in use. Examples of such devices include, but are not limited to, appliances, such as microwave ovens, clothes washers and dryers, stovetops, ovens, countertop kitchen appliances, and lawn and garden appliances, such as trimmers, edgers, blowers, snow blowers, and lawn mowers; audio and visual entertainment devices, such as stereo components, televisions, stationary and portable video game consoles, portable music players including MP3 players, CD players, and radios; portable personal computers including laptops and personal digital assistants (PDAs); remote controls; and calculators. The invention can also be utilized for non-interactive displays, such as house or building address numbers, advertisement signs, product displays in stores, and open/closed signs for businesses. Other examples of exterior house components suitable for use with the invention include soffits and soffit inserts (e.g. for concealing holiday or other decorative lighting), garage door panels, rain gutters, fencing and railings, and solar panel covers. The invention can also be employed in the interior of the home, such as with staircase hand rails and baseboards. Additionally, the invention can be incorporated with home security systems to conceal interior and/or exterior security cameras. Furthermore, it is also contemplated that the invention can be utilized with office furniture.
In general, the invention can be employed in numerous applications, only a few of which are presented herein for brevity. The examples listed above are provided for exemplary purposes only and are not intended to limit the invention in any manner. The particular embodiments of the invention presented below are described for illustrative purposes with respect to an automobile exterior trim component, with it being understood that the invention can also be employed in other applications, such as those described above.
The exemplary vehicular trim component 20 shown in FIG. 1 is in the form of a license plate lighting bar positioned above a mounting location 12 for a license plate at a rear end of the vehicle 10. The trim component 20 is shown in more detail in FIGS. 2-7, and these figures illustrate elements of the trim component 20 related to the invention. It will be apparent to one of ordinary skill in the vehicular component art that the trim component 20 can comprise other elements that relate to other functions of the trim component 20.
FIG. 2 illustrates the trim component 20 in a non-illuminated state, wherein the trim component 20 appears as if it does not have any type of indicium thereon. However, when the trim component 20 is illuminated, an indicium 22 in an illuminated state is viewable by an observer, as shown in FIG. 3. The exemplary indicium 22 of FIG. 3 is a logo comprising textual characters and a design, and FIG. 4 illustrates another exemplary indicium 22 in the form of a turn signal. The indicium 22 is preferably sized so that it can be viewed from a reasonable distance and can be positioned in any suitable location on the trim component 20.
Referring now to FIGS. 5-6A, the trim component 20 comprises a substrate 30 having an external surface 26 and an internal surface 28. The substrate has a finish 32 on the external surface 26, and a mask 34, which defines the indicium 22, and an illumination source 36 of the trim component 20 are located on a side of the substrate 30 facing the inside surface 28. In this application, the terms “forward” and “rearward” refer to orientations towards and away from, respectively, the vehicle 10 when the trim component 20 is mounted to the vehicle 10 or, more generically, to the sides of the substrate 30 closer to and farther away from, respectively, the illumination source 36. For example, the external surface 26 is on the forward side of the substrate 30, and the internal surface 28 is on the rearward side of the substrate 30. The substrate 30 of the exemplary trim component 20 of the present embodiment comprises a face 40 and pairs of opposing side walls 42 and upper and lower walls 44 extending rearward from and generally orthogonally relative to the face 40.
The substrate 30 provides a base for the trim component 20 and, according to one embodiment, is made of polymeric material. Exemplary polymeric materials include silicone and nylon. Alternatively, the substrate 30 can be made of glass or any other suitable material. For example, the substrate 30 can be at least partially made of a conductive material whose optical properties, such as opacity, change when an electrical charge is applied thereto. The substrate 30 can comprise any suitable wall thickness, which is the distance between the external surface 26 and the internal surface 28, to render the substrate 30 rigid or flexible depending on the desired properties of the trim component 20. For example, the substrate 30 can be in the form of a flexible film. Additionally, the substrate 30 according to one embodiment of the invention can be translucent or sufficiently transparent such that the substrate 30 transmits light without significant blurring or distortion. Further, the substrate 30 can be made of a clear material tinted to give a desired visual effect, such as a smoky or amber appearance, to achieve a desired color, to achieve a desired light color output, or to hide electronics, which are discussed in more detail below.
The finish 32 on the forward side of the substrate 30 conceals the mask 34 and the illumination source 36 when the illumination source 36 is not illuminated and provides the trim component 20 with a desired external appearance. Additionally, the finish 32 is substantially opaque when viewed from the forward side of the trim component 20 to conceal the illumination source 36, the mask 34, or any other components on the rearward side of the finish 32 when the illumination source 36 is not illuminated. However, the finish 32 transmits light generated from the illumination source 36 on the rearward side thereof so that an observer can view light from the illumination source 36 and thereby view the indicium 22 when the illumination source 36 is in an illuminated state. Further, the finish 32 hides the illumination source 36 and the mask 34 when the illumination source 36 is in an non-illuminated state and thereby gives the trim component 20 an appearance identical to a trim component without an indicium. According to one embodiment of the invention, the finish 32 can be selected so that the appearance of the trim component 20 is similar to the appearance of portions of the vehicle 10 adjacent to the trim component 20; therefore, the finish 32 enables the trim component 10 to effectively “blend in” with adjacent portions of the vehicle 10 when the illumination source 36 is not illuminated to create a desired aesthetic appearance.
In addition to providing desired optical properties, the finish 32 can be texturized to create desired visual and tactile effects. For example, the textured finish can create a desired light output, such as by filtering or diffusing light from the illumination source 36. Furthermore, the textured finish can have a texture different than the texture of the adjacent areas of the vehicle 10 so that an observe can identify and differentiate the trim component 20 from the rest of the vehicle 10 when the trim component 20 otherwise “blends in” with the vehicle 10.
The finish 32 can be made of any material(s) and can have any form suitable to impart the optical properties described above. The desired optical properties of the finish 32 can be achieved by properties inherent to the finish 32 due to its chemical composition or by selecting a particular thickness for the finish 32.
According to one embodiment, the finish 32 is a coating applied to the substrate 30. Exemplary coating materials include, but are not limited to paints, including metallic paints, such as Ghost Chrome® paint available from Alsa Corporation. Other suitable paints include automotive and non-automotive grade paints, which can be applied with a spraying process. The paint can be applied in accordance with the particular thickness required to achieve the desired optical properties for the finish 32 and to avoid excessive deposition of the paint. Optionally, tint can be added to the paint to achieve a desired color, such as to match the trim component 20 to the vehicle 10, and the paint can be coated with a protective clear coat, which can also be tinted to achieve a desired color. The coating can also be in the form of a metal, such as aluminum or chromium, deposited onto the trim component 20 utilizing any suitable metal deposition process.
Alternatively, the finish 32 can comprise a separate component made of or coated with a material having the properties described above. For example, the finish 32 can be a thin film made of a suitable material, such as a polymeric material or a fabric material, laid on the substrate 30 to provide a desired cosmetic appearance and to impart the desired optical properties for the trim component 20. The film can be a solid color or can include a pattern or image. Another exemplary process for applying a film to the substrate 30 is a hydro-graphic process where a film having a desired appearance, such as a simulated carbon fiber appearance, is floated on liquid, and the substrate 30 is dipped into the liquid such that the film attaches to the substrate 30 when the substrate 30 is removed from the liquid. Alternatively, the film can be insert molded with the substrate 30. In this process, the film can be inserted into a mold cavity, and then the mold is closed for injection of material to form the substrate 30. The film and the substrate 30 become a single component, with the film functioning as a cosmetic outer skin of the substrate 30.
According to another embodiment of the invention, the finish 32 can be integrated with the substrate 30. For example, the substrate 30 can be molded of a polymer having a desired color, and the wall thickness of the substrate 30 can be selected to achieve the optical properties required of the finish 32. Thus, the substrate 30 in this case functions both as the base for the trim component 20 and as the finish 32 for the trim component 20.
The mask 34 comprises a masked portion 46 and an unmasked portion 48 that transmits more light than the masked portion 46 and defines the indicium 22. The finish extends across both the masked portion 46 and the unmasked portion 48 to conceal visible differences between the masked portion 46 and the unmasked portion 48 when the illumination source 36 is not illuminated. Thus, the indicium 22 is not visually discernible when the illumination source is in the non-illuminated state. In the current embodiment, the mask 34 is designed so that the unmasked portion 48 is aligned with the face 40 of the substrate 30, but it is within the scope of the invention for the unmasked portion 48 to be located anywhere on the mask 34 corresponding to any location of the substrate 30. Furthermore, the mask 34 is illustrated in the figures as being applied to the internal surface 28 of the substrate 30; however, the mask 34 can be located on the external surface 26 of the substrate 30 or in any other suitable location of the trim component 20.
According to one embodiment, the masked portion 46 is black to ensure that light from the illumination source 36 located on the rearward side of the mask 34 only passes through the unmasked portion 48, which can be generally translucent, transparent, or hollow (i.e., an opening or aperture). As a result, when the illumination source 36 is illuminated, light shines through the unmasked portion 48, the substrate 30, and the finish 32 to render the indicium 22 visible to the observer, as shown in FIG. 6A. Alternatively, the opacities of the masked and unmasked portions 46, 48 can be selected so that the light shines through both the masked and unmasked portions 46, 48 but at different intensities so that the indicium 22 is visually discernible. The unmasked portion 48 can optionally be colored so that the light that shines therethrough is colored to give the indicium 22 a desired appearance.
The mask 34 can be made of any materials(s) and have any form suitable to create the masked portion 46 and the unmasked portion 48. The mask 34 can be, for example, a separate component made of an opaque material, such as a polymeric material or a fabric, with the unmasked portion 48 formed by material removed therefrom, or the mask 34 can be a separate component with an opaque coating thereon. Alternatively, the mask 34 can be a coating, such as paint, applied to the substrate 30 or the finish 32, or the mask 34 can be a film mounted to the substrate 30 or the finish 32 by an adhesive or the like. The mask 34 can also be formed integrally with the substrate 30, such as by removing material from the substrate 30 to form thin walled portions that allow light to pass through when backlit by the illumination source 36 or by molding the substrate 30 with a mold having a design that incorporates the thin walled portions. In these examples, the thin walled portions form the unmasked portion 48 of the mask 34.
Many different methods can be employed for manufacturing the mask 34. For example, the mask 34 can be applied with printing processes, such as screen printing processes (e.g. silk screening), where ink or other material is passed through a screen to a surface, or printing pad processes, where ink or other material is transferred from an ink pad to a surface using a stamp. In screen printing and printing pad processes, the screen and the pad are designed in accordance with the indicium 22. Alternatively, the mask 34 can be produced with a two shot molding process, wherein multiple resins can be injected into a single mold to create the masked and unmasked portions 46, 48. In a related process, insert/over molding, a solid clear component can be inserted into a mold, and opaque material, such as resin, can be injected around the clear component. The portions of the clear component that are not covered by the opaque material form the unmasked portion 48, and the opaque material forms the masked portion 46. Alternatively, the mask 34 can be made by molding a single component, which can be the substrate 30, as described above, or a component separate from the substrate 30, having portions with walls that are thin relative to the rest of the molding to form the unmasked portion 48.
Other methods, such as laser etching and CNC machining processes, for example, involve removing material to form the unmasked portion 48. In laser etching, an opaque coating, such as paint, can be applied to the substrate 30 or a separate structural component to form the masked portion 46, and a laser removes the paint to form the unmasked portion 48. CNC machining processes are well-known processes that can be used to remove, such as by cutting or milling, material from a component to form the unmasked portion 48. The material can be completely removed to form the unmasked portion 48 or can be sufficiently thinned to allow light to pass through when the illumination source 36 is illuminated.
The illumination source 36 is positioned on the rearward side of the substrate 30, the finish 32, and the mask 34 and generates light that transmits through the unmasked portion 48 of the mask 34, the substrate 30, and the finish 32 to provide a visible distinction between the masked portion 46 and the unmasked portion 48 of the mask 34 and thereby render the indicium 22 visually discernable to the observer. The illumination source 36 can be mounted to the trim component 20 or can be mounted to an outer surface of the vehicle 10 behind the trim component 20. The illumination source 36 can be any suitable light generating device, including, but not limited to, one or more light emitting diodes (LED), organic light emitting diodes (OLED), electroluminescent sources (e.g. light pads), incandescent light bulbs, fluorescent light bulbs, neon lights, and lasers. Another example of an illumination source is a display screen, such as a liquid crystal display (LCD) or plasma display. Further, the illumination source 36 can comprise light pipes and fiber optics that receive light from a remote light source and distribute the light. Additionally, the illumination source 36 can be white or colored and can comprise multiple light sources of differing colors. The illumination source 36 is connected to an electrical system of the vehicle 10 and can be continuously in the illuminated state or can be adapted to alternate between the illuminated state and the non-illuminated state in response to one or more conditions of the vehicle 10 or its environment. For example, the illumination source 36 can be adapted to illuminate when the user turns the ignition, actuates a turn signal switch, brakes, accelerates, activates a remote fob for a keyless entry system, touches an entry handle, or when an observer is within a predetermined distance of the vehicle 10. Further, the illumination source 36 can be voice activated by the user. Optionally, the illumination source 36 can operate in a plurality of illumination states, wherein the intensity of the light from the illumination source 36 is different for each illumination state. For example, the illumination states can comprise a standby illumination state wherein the intensity of the light from the illumination source 36 is less than during an active illumination state.
According to one embodiment of the invention, the illumination source 36 can be adapted to form the mask 34. For example, an electroluminescent pad can be shaped according to the indicium 22, or a coating can be applied to the pad to effectively create a mask or stencil on the pad and define areas through which light can pass. Alternatively, a plurality of LEDs can be configured in a shape corresponding to the indicium 22. According to another embodiment of the invention, optics, such as light pipes and fiber optics, that effectively form the mask 34 can be molded in the substrate 30. The optics collect light from the illumination source 36 and project the light in a pattern corresponding to the indicium 22.
The trim component 20 can further comprise electronics (not shown), such as switches and sensors for receiving input from the user. For example, the trim component 20 can comprise a membrane switch or capacitance or field effect sensors that generate a signal upon actuation thereof by the user. Furthermore, the electronics can comprise the aforementioned display screen, which can be used, for example, in conjunction with a global positioning system and/or a computer of the vehicle 10. An example of a trim component in the form of a door handle employing such electronics is presented below with respect to FIG. 12.
As described above, when the illumination source 36 is in the non-illuminated state, the trim component 20 has an appearance substantially identical to a trim component without an indicium, as shown in FIG. 2. When the illumination source 36 is in the illuminated state, light from the illumination source 36 transmits through the unmasked portion 48 of the mask 34 while less or no light transmits through the masked portion 46, as depicted in FIG. 6A. The light that shines through the unmasked portion 48 also transmits through the face 40 of the substrate 30 and the finish 32 on the external surface 26 of the substrate 30 so that the observer can perceive the indicium 22, as illustrated in FIGS. 3 or 4. Consequently, the finish 32 hides the mask 34 and thereby indicium 22 when desired, and the indicium 22 is not only viewable but has a captivating appearance when in the illuminated state.
A vehicle 110 with a second embodiment of a trim component 120 according to the invention is illustrated in FIG. 7, and the trim component 120 is shown in further detail in FIGS. 8-11, where components similar to those of the first embodiment are identified with like numerals in the form 1XX, where XX is the numerical identifier of the components for the first embodiment. The second embodiment trim component 120 is a vehicular door handle mounted to an exterior surface of a door 114 of the vehicle 110.
FIG. 8 illustrates the trim component 120 in a non-illuminated state, wherein the trim component 120 appears as if it does not have any type of indicium thereon. However, when the trim component 120 is illuminated, an indicium 122 in an illuminated state is viewable by an observer, as shown in FIG. 9. The exemplary indicium 122 of FIG. 9 is a logo comprising textual characters and a design.
Referring additionally to FIGS. 10 and 11, the trim component 120 in the form of the door handle comprises a handle base 150, a handle cap 160 removably mounted to the handle base 150, and a bezel 162 mounted on the door 114 adjacent the handle base 150 and the handle cap 160. It will be apparent to one of ordinary skill in the vehicular component art that the trim component 120 can comprise other elements that relate to other functions of the door handle. Exemplary door handles are disclosed in U.S. patent application Ser. No. 10/710,806, which is incorporated herein by reference in its entirety.
The handle base 150 is mounted to an external surface of the door 114 and comprises a pivot mount 152 at one end thereof for pivotally mounting the handle base 150 to the door 114 and a latch actuator 154 at an opposite end 152. The pivot mount 152 and the latch actuator 154 are positioned inside the door 114 such that they are not visible from the exterior of the vehicle 110. The latch actuator 154 is operatively coupled to a door latch (not shown) in any suitable manner, and displacement of the latch actuator 154 during pivotal movement of the housing body 150 about the pivot mount 152 releases the door latch so that the user can open the door 114 and enter the vehicle 110.
The handle cap 160 is mounted to a forward surface of the handle base 150 to provide a desired external appearance to the trim component 120. When the user grasps the trim component 120 to pivot the handle base 150 and release the door latch, the user grasps both the handle base 150 and the handle cap 160. Similar to the trim component 20 of the first embodiment, the handle cap 160 comprises a substrate 130 with a finish 132 on an external surface 126 and a mask 134 on an internal surface 128. The trim component 120 further comprises an illumination source 136 located between the handle cap 160 and the handle base 150. The substrate 130, the finish 132, the mask 134, and the illumination source 136 are similar to the corresponding components of the first embodiment and function in the same manner with respect to the indicium 122 and its visibility to an observer.
According to one embodiment, the handle cap 160 is removably mounted to the handle base 150 and can be exchanged with a replacement handle cap 160 having a different indicium 122 thereon. Because the handle cap 160 is replaceable, the user can personalize the trim component 120 with a personalized handle cap having a personalized indicium on the corresponding mask. Furthermore, the manufacture and assembly of the trim component 120 is facilitated by the replaceable nature of the handle cap 160; the handle cap 160 is the only part of the trim component 120 that needs to be custom made for a particular make or model of vehicle. When replacing the handle cap 160, the entire handle cap 160 can be removed and exchanged. Alternatively, if the mask 134 is not integral with the substrate 130, then only the mask 134 has to be removed and exchanged.
Optionally, the indicium 122 can be integrated with a keypad of a keyless entry system, as shown in FIG. 12. Exemplary vehicular door handles with such a keypad are disclosed in U.S. Patent Application No. 60/522,663 and in U.S. Patent Application Publication No. 2003/0031025, which are incorporated herein by reference in their entirety. The indicium 122 comprises the keypad, which has individual keys 170 that are touched by a user in a predetermined sequence to unlock a lock mechanism (not shown) of the keyless entry system so that the user can grasp and pull the trim component 120 to release the door latch. The keys 170 provide a visual indicator that identifies the location(s) on the trim component 120 that the user must touch to operate the keyless entry system. The keys 170 can be associated with electronics in the form of a switch or sensor, such as a membrane switch, a capacitance sensor, or a field effect sensor, positioned behind the keys 170 and capable of sensing the presence of the user's finger when the user touches the keys 170. Thus, when the user touches the keys 170 of the trim component, the electronics detect the presence of the user's finger, and when the user touches the keys 170 in the predetermined sequence, the electronics operably communicates with the lock mechanism to unlock the door. The keys 170 are viewable by the user when they are in the illuminated state, as illustrated in FIG. 12, and are advantageously not discernable when in the non-illuminated state. Alternatively, the keys 170 can be located on an escutcheon positioned behind the handle base 150 and the handle cap 160 or on an external panel of the door 114. The concept of utilizing the indicium 122 as a visual indicator that identifies one or more locations on the trim component 120 that a user must touch for activating electronics, such as the above mentioned switches and sensors, can be employed for applications other than keyless entry systems.
While the second embodiment trim component 120 has been described with respect to a strap-type door handle, the trim component 120 is not limited to such a door handle. The trim component 120 can comprise any suitable type of door handle, such as paddle handles and other types of handles known to one of ordinary skill in the vehicular component art.
Examples of other embodiments of trim components with concealed indicium according to the invention are illustrated in FIGS. 13-16. Components similar to those of the first embodiment are identified with like numerals in the form 2XX, where XX is the numerical identifier of the components for the first embodiment. FIGS. 13-16 show a vehicle 210 with a trim component 220 in the form of a bar integrated into side doors 214 of the vehicle 210. In FIG. 13, an indicium 222 functions as a safety side light that increases the visibility of the vehicle 210 when in the illuminated state, and the indicium in FIG. 14 is configured as a logo. Additionally, the indicium 222 of FIGS. 13 and 14 can also function as a turn signal indicator that flashes when the driver actuates a control lever inside the vehicle 210. In FIGS. 15 and 16, the indicium 222 is configured as a security or puddle light that illuminates a ground area 272 adjacent the vehicle 210 when in the illuminated state. The illuminated state can be achieved upon actuation of a remote keyless entry fob or by any other suitable event. The indicium 222 of FIG. 15 is a single, elongated puddle light, while the indicium 222 of FIG. 22 comprises a plurality of shorter disconnected segments that together form the puddle light.
The relative positioning of the substrate 30, the finish 32, and the mask 34 of the trim components 20, 120 described herein can be altered in any reasonable fashion. For example, the mask 34 can be positioned forward of the substrate 30, or the finish 32 can be positioned between the substrate 30 and the mask 34, if desired. Additionally, the finish 32 can be located on the internal surface 28 of the substrate, and the mask can be applied to the finish 32. Furthermore, the trim component 20, 120 according to the invention does not have to include the mask 34 if desired. For example, light from the illumination source 36 can be transmitted through the entire substrate 30. Alternatively, the trim component can comprise an illumination source that focuses light on certain regions of the trim component. For example, an LCD display positioned behind the substrate 30 includes its own focused illumination source, and the LCD display becomes visible through the substrate 30 and the finish 32 when in the powered state yet is concealed by the finish 32 when not powered.
Exemplary flow charts of methods 300 for producing the combination substrate, finish, and mask of any of the embodiments of the trim component according to the invention are shown in FIGS. 17A and 17B. The method 300 illustrated in FIG. 17A begins by applying the mask 34 to the substrate 30 in step 302. The mask 34 can be applied to the front side of the substrate 30 or to the rear side of the substrate 30. According to one embodiment, the mask 34 is applied by positioning a stencil in the form of the indicium 22 on the substrate 30, spraying or otherwise applying an opaque coating, such as a black paint, to the substrate 30, and then removing the stencil. Next, the finish 32 is applied to the substrate 30 on the side opposite the mask 34 in step 304. According to one embodiment, the finish 32 is applied by coating the substrate 30 with a paint, such as the aforementioned Ghost Chrome. In the case where the mask 34 is applied to the rear side of the substrate 30, the finish 32 is applied to the front side of the substrate 30. After the finish 32 is applied, a protective coating, such as a clear coat, can optionally be applied to the finish 32 in step 306. In the method 300 of FIG. 17A, steps 302 and 304 can occur in reverse order, if desired.
The method 300 described above produces the substrate 30 with the finish 32 and the mask 34 on opposite sides thereof. Alternatively, the method 300 can be altered as shown in FIG. 17B to produce the substrate 30 with the finish 32 and the mask 34 on the same side of the substrate 30. To begin the method 300 in FIG. 17B, the finish 32 is applied to the substrate 30, such as on the rear side of the substrate 30, in step 310. According to one embodiment, the finish 32 is applied to the rear side of the substrate 30 by coating the rear side of the substrate 30 with paint, such as the aforementioned Ghost Chrome. Next, the mask 34 is applied to the finish 32 in step 312. According to one embodiment, the mask 34 is applied by positioning a stencil in the form of the indicium 22 on the rear side of the finish 32, spraying or otherwise applying an opaque coating, such as a black paint, to the finish 32, and then removing the stencil.
The vehicular trim components with a concealed indicium according to the invention advantageously conceal indicia and an illumination source when in the non-illuminated state and provide a captivating appearance to the indicia when in the illuminated state. As a result, indicia that do not contribute the aesthetic appearance of the vehicle are hidden when not in use. Additionally, the visually alluring indicia can function as effective advertising media and provide a vehicle owner with creative options for personalizing the vehicle.
While the invention has been specifically described in connection with certain specific embodiments thereof, it is to be understood that this is by way of illustration and not of limitation, and the scope of the appended claims should be construed as broadly as the prior art will permit.

## Claims

1. A vehicular keypad comprising at least one key, and further comprising:
a substrate having an external surface, an internal surface, and a finish on at least one of the external and internal surfaces;
an illumination source actuatable between an illuminated state and a non-illuminated state and positioned behind the substrate to direct light through the finish with the illumination source in the illuminated state; and
a mask associated with the substrate, wherein the mask defines at least a masked portion and an unmasked portion, wherein the unmasked portion transmits more light than the masked portion;
wherein the finish extends across both the masked portion and the unmasked portion to conceal visible differences between the masked portion and the unmasked portion when the illumination source is in the non-illuminated state, and wherein light passes through the unmasked portion and the finish when the illumination source is in the illuminated state to provide a visible distinction between the masked portion and the unmasked portion so that the vehicular keypad comprising at least one key is not visually discernable when the illumination source is in the non-illuminated state.

2. The vehicular keypad of claim 1, wherein the finish comprises a coating applied to the substrate across the masked portion and the unmasked portion.

3. The vehicular keypad of claim 2 wherein the coating is paint.

4. The vehicular keypad of claim 3 wherein the coating is a metallic paint.

5. The vehicular keypad of claim 4 wherein the coating includes a tint so that the finish of the trim component can be matched to a vehicle on which the trim component is mounted.

6. The vehicular keypad of claim 2 wherein the coating comprises a film applied to the at least one of the external and internal surfaces of the substrate.

7. The vehicular keypad of claim 6 wherein the film is applied using a hydro-graphics process.

8. The vehicular keypad of claim 6 wherein the film is insert molded with the substrate.

9. The vehicular keypad of claim 1 wherein the finish is texturized to provide a desired feel to the external surface.

10. The vehicular keypad of claim 1 wherein the finish is formed integral with the substrate.

11. The vehicular keypad of claim 1 wherein the finish comprises at least one metal deposition layer on the at least one of the external and internal surfaces of the substrate.

12. The vehicular keypad of claim 1 wherein the masked portion of the mask comprises a coating applied to the internal surface of the substrate.

13. The vehicular keypad 1 of claim 1 wherein the masked portion of the mask comprises a coating applied to the external surface of the substrate.

14. The vehicular keypad of claim 1 wherein the mask comprises a body separate from the substrate and having the unmasked portion formed as an opening therein.

15. The vehicular keypad of claim 14 wherein the mask is mounted to the internal surface of the substrate.

16. The vehicular keypad of claim 1 wherein the mask comprises an integral portion of an internal surface of the substrate, wherein the masked portions of the mask are thicker portions of the substrate than the unmasked portions.

17. The vehicular keypad of claim 16 wherein the unmasked portions are formed by removing material from the internal surface of the substrate.

18. The vehicular keypad of claim 17 wherein the material is removed by a laser-etching process.

19. The vehicular keypad of claim 1 wherein the masked portion of the mask is printed onto the substrate.

20. The vehicular keypad of claim 19 wherein the masked portion is printed by at least one of a silk screen, screen print, and print pad process.

21. The vehicular keypad of claim 1 wherein the masked portion of the mask is molded onto the internal surface of the substrate.

22. The vehicular keypad of claim 1 wherein the illumination source comprises at least one light source selected from the group consisting of: a light-emitting diode, an incandescent light bulb, a fluorescent light bulb, an electroluminescent light source, a neon light, a light pipe received from a remote light source, a fiber optic-received light, a liquid-crystal display and a laser.

23. The vehicular keypad of claim 22 wherein the light source is a display screen, and the display screen is hidden by the finish when the display screen is in the non-illuminated state.

24. The vehicular keypad of claim 1 wherein the unmasked portion defines an indicium.

25. The vehicular keypad of claim 24 wherein the indicium is at least one of a trademark, one or more alphanumeric characters, a logo, a design, a symbol, a picture, an image, an indicator, and a frit.

26. The vehicular keypad of claim 1 wherein the substrate is composed of a material selected from the group consisting of: a polymeric material, glass, a conductive material, and silicone.

27. The vehicular keypad of claim 1 wherein the unmasked portion includes at least one optic area for distributing light passing through the unmasked portion.

28. The vehicular keypad of claim 1 wherein the keypad comprises a keyless entry pad.

29. The vehicular keypad of claim 1 wherein the trim component is in the form of a door handle.

30. The vehicular keypad of claim 1, wherein the substrate is translucent.

31. The vehicular keypad of claim 30, wherein the finish is on the internal surface of the substrate, and the mask is applied to the finish.