Patent Publication Number: US-8113695-B2

Title: Trim component with concealed indicium

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation-in-part of U.S. application Ser. No. 11/926,731, filed Oct. 29, 2007, which is a continuation of U.S. application Ser. No. 11/161,501, filed Aug. 5, 2005, now U.S. Pat. No. 7,350,949, issued Apr. 1, 2008, which claims the benefit of U.S. provisional application Ser. No. 60/593,677, filed Feb. 4, 2005, and which are incorporated herein in their entirety. 
    
    
     BACKGROUND OF THE INVENTION 
     1. 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. 
     2. 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 selected appearance or fail to attract sufficient 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&#39;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&#39;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 
     In one embodiment, a component of an actuatable apparatus has a substrate, a selectively light-transmissive opaque covering, and an illumination source. The substrate includes an obverse surface and an opposed reverse surface, one of the obverse surface and the reverse surface defining a transparent selected area. The opaque covering is applied to one of the obverse surface and the reverse surface to selectively enable and prevent transmission of light therethrough. The illumination source is actuatable between an illuminated state and a non-illuminated state, and adjacent the reverse surface for illuminating the selected area. The opaque covering is disposed to intercept light directed through the selected area, and is characterized by first and second portions collectively defining a pattern associated with the selected area. The first portion has a first transmissivity to light to enable transmission of light therethrough, and the second portion has a second transmissivity to light to prevent or impede transmission of light therethrough. Actuation of the illumination source directs light through the first portion but not through the second portion to thereby reveal the pattern. The opaque covering renders the pattern invisible when the illumination source is in the non-illuminated state, and visible when the illumination source is in the illuminated state. 
     In another embodiment, a method of fabricating an actuatable apparatus enables a pattern associated with a component to be selectively revealed and concealed. The method steps include selecting a substrate including an obverse surface and an opposed reverse surface, one of the obverse surface and the reverse surface defining a transparent selected area; applying a selectively light-transmissive opaque covering to one of the obverse surface and the reverse surface to selectively enable and prevent transmission of light therethrough, the opaque covering disposed to intercept light directed through the selected area; adapting the opaque covering into first and second portions to collectively define a pattern associated with the selected area, the first portion having a first transmissivity to light to enable transmission of light therethrough, and the second portion having a second transmissivity to light to prevent or impede transmission of light therethrough; adapting the opaque covering to render the pattern invisible when an illumination source is in a non- illuminated state, and visible when an illumination source is in an illuminated state; and positioning adjacent the reverse surface an illumination source for illuminating the selected area, the illumination source actuatable between an illuminated state for transmitting light through the pattern to reveal the pattern, and a non-illuminated state for obscuring the selected area and concealing the pattern. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In 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  6 A- 6 A 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. 
         FIG. 18  an exploded, perspective view of a vehicular door handle comprising an alternative embodiment of the invention. 
         FIG. 19  is an enlarged, perspective view of a portion of the vehicular door handle of  FIG. 18 . 
         FIG. 20  is a perspective view of a clothes dryer comprising an alternative embodiment of the invention. 
         FIG. 21  is a perspective view of a 7-segment display assembly comprising an alternative embodiment of the invention. 
     
    
    
     DESCRIPTION OF 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  can be 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 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 can be 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 the illusion of 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 for operation by 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, ranges, 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 described 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 embodiments of the invention described below are for illustrative purposes only 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  can be 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 can be viewed by an observer, as shown in  FIG. 3 . The exemplary indicium  22  of  FIG. 3  can be 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  can be 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 , a first embodiment of the trim component  20  comprises a substrate  30  having an external surface  26  and an internal surface  28 . The substrate has a finish layer  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  can be on the forward side of the substrate  30 , and the internal surface  28  can be 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, can be 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 characteristics, such as opacity, change when an electrical charge is applied thereto. The substrate  30  can comprise any suitable wall thickness, which can be the distance between the external surface  26  and the internal surface  28 , to render the substrate  30  rigid or flexible depending on the selected characteristics for 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 selected visual effect, such as a smoky or amber appearance, to achieve a selected color, to achieve a selected light color output, or to hide electronics, which are discussed in more detail below. 
     The finish layer  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 selected external appearance. Additionally, the finish layer  32  can be 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 layer  32  when the illumination source  36  is not illuminated. However, the finish layer  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 layer  32  hides the illumination source  36  and the mask  34  when the illumination source  36  is in a 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 layer  32  can be selected so that the appearance of the trim component  20  can be similar to the appearance of portions of the vehicle  10  adjacent to the trim component  20 ; therefore, the finish layer  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 selected aesthetic appearance. 
     In addition to providing selected optical characteristics, the finish layer  32  can be texturized to create selected visual and tactile characteristics. For example, the textured finish can create a selected 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 observer 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 layer  32  can be fabricated of any material(s) and can have any form suitable to impart the optical characteristics described above. The selected optical characteristics of the finish layer  32 , such as light transmissivity, can be controlled by selective control of finish properties such as chemical composition, color, applied thickness, and the like. The wavelength of the light emitted by the illumination source  36  will also control the transmissivity of the finish layer  32 . 
     According to one embodiment, the finish layer  32  can be 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 selected optical characteristics for the finish layer  32  and to avoid excessive deposition of the paint. Optionally, tint can be added to the paint to achieve a selected 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 selected 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 layer  32  can comprise a separate component made of or coated with a material having the characteristics described above. For example, the finish layer  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 selected cosmetic appearance and to impart the selected optical characteristics 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  can be a hydrographic process in which a film having a selected appearance, such as a simulated carbon fiber appearance, is floated on liquid, and the substrate  30  can be 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 can be 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 layer  32  can be integrated with the substrate  30 . For example, the substrate  30  can be molded of a polymer having a selected color, and the wall thickness of the substrate  30  can be selected to achieve the optical characteristics required of the finish layer  32 . Thus, the substrate  30  in this case functions both as the base for the trim component  20  and as the finish layer  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  can be designed so that the unmasked portion  48  can be 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  can be 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 layer  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  can be visually discernible. The unmasked portion  48  can optionally be colored so that the light that shines therethrough is similarly colored to give the indicium  22  a selected 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 layer  32 , or the mask  34  can be a film mounted to the substrate  30  or the finish layer  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 can be passed through a screen to a surface, or printing pad processes, where ink or other material can be 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  can be positioned on the rearward side of the substrate  30 , the finish layer  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 layer  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  can be connected to an electrical system of the vehicle  10 , and can remain continuously in an illuminated state, or 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 actuates the ignition, actuates a turn signal switch, brakes, accelerates, actuates a remote fob for a keyless entry system, touches an entry handle, or when an observer is within a predetermined distance from 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  can be 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  can be less than during an active illumination state. 
     According to another 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 in the vehicle  10 . An example of a trim component in the form of a door handle employing such electronics is described 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 layer  32  on the external surface  26  of the substrate  30  so that the observer can perceive the indicium  22 , as illustrated in  FIG. 3  or  4 . Consequently, the finish layer  32  hides the mask  34  and thereby the indicium  22  when in the non-illuminated state, and the indicium  22  is not only viewable, but has an attractive 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  can be 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 can be viewed by an observer, as shown in  FIG. 9 . The exemplary indicium  122  of  FIG. 9  can be 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  can be 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  can be 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  can be mounted to a forward surface of the handle base  150  to provide a selected 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  can be 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  can be replaced, 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  can be facilitated by the replaceable nature of the handle cap  160 ; the handle cap  160  can be 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&#39;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&#39;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  can be 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  can be 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  can be 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 layer  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 layer  32  can be positioned between the substrate  30  and the mask  34 . Additionally, the finish layer  32  can be located on the internal surface  28  of the substrate, and the mask can be applied to the finish layer  32 . Furthermore, the trim component  20 ,  120  according to the invention does not have to include the mask  34 . 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 layer  32  when in the powered state, yet can be concealed by the finish layer  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  can be 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 layer  32  can be applied to the substrate  30  on the side opposite the mask  34  in step  304 . According to one embodiment, the finish layer  32  can be applied by coating the substrate  30  with a paint, such as the aforementioned Ghost Chrome. In the case where the mask  34  can be applied to the rear side of the substrate  30 , the finish layer  32  can be applied to the front side of the substrate  30 . After the finish layer  32  is applied, a protective coating, such as a clear coat, can optionally be applied to the finish layer  32  in step  306 . In the method  300  of  FIG. 17A , steps  302  and  304  can occur in reverse order. 
     The method  300  described above produces the substrate  30  with the finish layer  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 layer  32  and the mask  34  on the same side of the substrate  30 . To begin the method  300  in  FIG. 17B , the finish layer  32  can be applied to the substrate  30 , such as on the rear side of the substrate  30 , in step  310 . According to one embodiment, the finish layer  32  can be 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  can be applied to the finish layer  32  in step  312 . According to one embodiment, the mask  34  can be applied by positioning a stencil in the form of the indicium  22  on the rear side of the finish layer  32 , spraying or otherwise applying an opaque coating, such as a black paint, to the finish layer  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 to the aesthetic appearance of the vehicle are hidden when not in use. Additionally, the visually attractive indicia can function as effective advertising media and provide a vehicle owner with creative options for personalizing the vehicle. 
     Yet another embodiment of the trim component is illustrated in  FIGS. 18 and 19 . The embodiment of  FIGS. 18 and 19  shares many of the features of the previously described embodiments, which will not be described in detail herein unless necessary for a complete understanding of the invention.  FIG. 18  illustrates an exemplary exploded view of a door handle assembly  310  having an overlying selectively light transmissive indicia coating  322 . The indicia coating  322  can incorporate a pattern  324 , such as alphanumeric characters or symbols, which is invisible when light, such as sunlight, impinges on the door handle assembly  310 , but visible when backlit. The indicia coating  322  can be incorporated into the door handle assembly  310  so that, when the indicia are invisible, the door handle assembly  310  seamlessly blends in with the rest of the vehicle to which it is attached, as hereinafter described. 
     The door handle assembly  310  can comprise a substrate in the form of a grip cover  318  that mates with a handle housing  312  pivotally mounted to a vehicle door (not shown) and operatively coupled with a door latch (not shown) located inside the door. Together, the grip cover  318  and the handle housing  312  can form a grip that can be grasped by a user. The door handle assembly  310  can further include an illumination source holder  314  mounted to the handle housing  312  and sandwiched between the housing  312  and the grip cover  318 . The illumination source holder  314  can support an illumination source assembly  316  comprising a plurality of illumination elements  330  to provide backlighting to the pattern  324 . The illumination elements  330  can be any suitable source of light such as light emitting diodes (LEDs) that can be illuminated individually, in groups, or all at once. An illumination source assembly wire harness  332  can extend through the handle housing  312  to be coupled with the vehicle power and control systems (not shown), for controlling the operation of one or more of the illumination elements  330 . 
     The door handle assembly  310  can also comprise a bezel  320  mounted to the vehicle door adjacent to and coextensive with the grip cover  318 . 
     The indicia coating  322  can comprise a specialty paint or finish that can be applied to the grip cover  318  through a coating process, such as a spray process, hydrographic or dip process, or other suitable coating process known in the art. The specialty paint or finish can comprise a selectively light transmissive coating that inherently renders the pattern  324  invisible in bright light until the illumination source assembly  316  is activated to backlight the pattern  324  and thereby render the pattern visible. Alternatively, the thickness of the indicia coating  322  can be carefully controlled to provide a selected level of light transmissivity. The indicia coating  322  can be applied in two different thicknesses, the lesser thickness being associated with the pattern  324 , and the greater thickness being associated with the remaining area of the coating  322 . 
     The selected pattern  324  to be rendered visible when backlit can also result from modifications of portions of the indicia coating  322  to enhance its light transmissivity associated with such pattern. For example, the indicia coating  322  can be removed entirely in the selected pattern after the coating  322  has been applied over the entire substrate, and replaced with a more light transmissive coating. The application of the indicia coating  322  can be controlled, such as through the use of stencils or paint masks, so that no indicia coating  322  is applied over the pattern. The pattern can subsequently be coated with a more light transmissive coating. The indicia coating  322  can also be adapted to reflect light that impinges on the door handle assembly  310 , thereby enhancing the concealment of the indicia when not backlit. 
     As illustrated in  FIG. 19 , the indicia coating  328  corresponding to the selected patterns  324  can be partially removed or incised, such as by scoring, fine crosshatching, stippling, etching, carving, and the like, to enhance its transmissivity, while maintaining the opacity or masking capabilities of the remaining indicia coating  322 . Other characteristics that can be controlled to control the transmissivity of selected patterns in the indicia coating  322  include paint color, the color of the illumination elements  330 , the intensity of the light emitted from the illumination elements  330 , and the like. 
     The use of a specialty paint or finish as described above can eliminate the need for a separate mask to block light from the illumination source assembly  316  in order to illuminate the selected characters or symbols  324 . A single layer serving as both a finish coat and a mask layer can simplify the process of fabricating a door handle assembly  310  by eliminating an extra layer while producing a door handle assembly that can blend in with the vehicle&#39;s overall color and finish, thereby accelerating production and reducing costs. 
     The invention is not limited to vehicle door handles, or to vehicles in general. The invention can also be incorporated into items such as appliances. As illustrated in  FIG. 20 , the invention can be incorporated into an automatic clothes dryer  340  comprising a cabinet  344  having a door  346  providing access to an interior drum (not shown). The clothes dryer  340  can also comprise a substrate in the form of a control panel  342  mounted to an upper portion of the clothes dryer  340  and comprising a user interface  348  according to the invention. The user interface  348  can have a plurality of operational keys  356  and a display  358 . The control panel  342  can also include a control knob  350  and control buttons  360 . The knob, keys, buttons, display, and other interactive control devices can provide information and control functionality to a user. 
     The keys  356 , control knob  350  and control buttons  360  can comprise flush-mounted, soft-touch control wheels, buttons, and keys, or control wheels, buttons, and keys utilizing sensors, such as field effect sensors or capacitance sensors, that can be activated when a user&#39;s finger is in the vicinity of the sensor, and which can more readily accommodate an indicia coating. 
     The control panel  342 , including the user interface  348 , control knob  350 , and control buttons  360 , can be adapted with an indicia coating so that, when the clothes dryer  340  is not in use, the control panel  342  is effectively concealed, and when the clothes dryer  340  is in use, the control panel  342 , user interface  348 , control knob  350 , and control buttons  360  can be backlit, rendering them visible to a user of the appliance. It may be necessary to utilize an illumination source capable of sufficiently illuminating the control panel  342 , user interface  348 , control knob  350 , and control buttons  360  in bright light, such as daylight or conventional interior lighting. 
     The illumination source can comprise an illumination source holder supporting an illumination source assembly comprising a plurality of illumination elements, generally as described above. It is assumed that configuration of these elements for use in an appliance control panel rather than a vehicle door handle assembly is within the abilities of a person having an ordinary level of skill in the art. 
     Alternatively, the illumination source can comprise a known 7-segment display assembly  370 , which provides both illumination and information. The display assembly  370  can comprise a 7-segment display console  371  and an indicia coating  382 . The display console  371  can comprise an enclosure  372  containing at least one illuminating 7-segment display indicium  380 , associated electronic control circuitry, power subassemblies, and the like, coupled with the vehicle electrical system through a wire harness  374  and connector  376 . A substrate in the form of a display panel  378  extending along one wall of the enclosure  372  can incorporate or overlay one or more indicia  380 , such as alphanumeric characters. The indicia coating  382  having a selected color and finish can be applied to the display panel  378  to conceal the 7-segment display and blend the display console  372  into adjacent body panels. Alternatively, the indicia coating  382  can be applied directly over the 7-segment display indicia  380 . The indicia coating  382  can incorporate a plurality of transmissive portions  384 , each aligned with an indicium  380 , and surrounded by a mask portion  386  generally as described above. The display assembly  370  can be incorporated into a motor vehicle component, an appliance, signage, signaling devices, and the like. 
     For components or applications in which the indicia are only observed or only convey information, the indicia coating configurations described above can be utilized. However, if the indicia are to additionally facilitate the selection of a functionality, such as a keypad, the configuration can incorporate one or more functionality switches, such as a field effect sensor, a capacitance sensor, a pressure pad, a multi-touch screen, and the like. 
     The control panel can be configured with an illumination source for each selectable control. Utilizing, for example, a field effect sensor adapted so that touching any part of the control panel will actuate the illumination sources, specific indicia associated with each selectable control will be visible and can be selectively actuated by the user. Individual indicia can also be actuated by a field effect sensor, a multi-touch display panel, and the like. The control panel electronics can be adapted so that, after the user has completed the actuation of controls, the indicia and illumination sources not associated with the selected controls can be automatically switched off. Informational indicia associated with a selected operation or function, such as water temperature, laundry load weight, selected wash cycle, and the like, can continue to be illuminated. A 7-segment display assembly may be particularly well suited for displaying such information. Thus, for example, during use of the appliance, only those indicia associated with a selected operation or function will remain illuminated. Those indicia not associated with a selected operation or function will be concealed, and the overlying finish layer will “blend in” with the adjoining surfaces. 
     The selectively light transmissive indicia coating as described herein can also be utilized for brake lights, parking lights, turn indicators, and the like. The indicia coating can be adapted for light transmissivity in areas corresponding to the brake lights, parking lights, turn indicators, etc. the remainder of the indicia coating can be opaque, to serve as a mask portion. In ambient light, the brake lights, parking lights, turn indicators, etc. will be concealed behind the indicia coating, with the entire assembly having a color and finish blending in with the color and a finish of adjacent portions of the vehicle. However, when braking, using the turn indicators, or actuating the braking lights, light will be transmitted through the transmissivity areas. 
     The indicia coating can be used with lock/unlock indicators incorporated into the vehicle door or other panels. When the door is unlocked, either with a key, a wireless control such as a key fob, or a code-based keyless entry system, a light element can be briefly activated to indicate the locked/unlocked condition; when deactivated, the light element can be concealed behind the indicia coating, which will blend in with adjacent panels. 
     Other applications can include dome lights, supplemental exterior area lighting, license plate illumination, and the like. The trim component described herein can comprise a part of other vehicles, such as aircraft, watercraft, motorcycles, personal watercraft such as Sea-Doos® and Waverunners®, all-terrain vehicles, and the like. The trim component can also comprise a part of any other appliance, such as clothes washers, dishwashers, refrigerators, freezers, laundry pedestals, and portable appliances, such as vacuum cleaners, countertop mixers, blenders, coffeemakers, radios, music systems, and food processors. Virtually any actuatable apparatus that incorporates informational displays or controls can incorporate the trim component, as generally described herein. The use of the selectively light transmissive indicia coating can enhance the styling and appearance of such apparatus by concealing indicia and illumination sources until the illumination source is actuated, and the indicia are revealed. The use of a single layer that can be adapted as both a mask portion and an unmasked portion can simplify the fabrication and finishing of the apparatus, enhance the appearance of the apparatus, and reduce the costs of fabrication. 
     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.