Display device

Abstract

According to various embodiments, there may be provided a display device. The display device may include a first panel and a second panel, as well as a light- transmission body and a light source. The light-transmission body may be configured to channel light that is emitted by the light source, through the light-transmission body from a light-input face to a primary light-output portion of the light-transmission body, to cause the light to pass through the second panel, via at least one light-transmissive region of the second panel, towards the first panel for partial reflection of the light by at least one partially reflective region of the first panel.

Description

DISPLAY DEVICETechnical Field

[0001] Various embodiments generally relate to a display device. Tn particular, various embodiments relate to an illuminable display device, such as an “infinity minor”.Background

[0002] The evolution of display technologies has led to changes in functionality, convenience, and cost efficiency. However, existing technologies for generating complex lighting within confined spaces pose several challenges and limitations.

[0003] Traditional lighting architecture for display technologies typically necessitates multiple light sources to achieve uniform radiance and desired photometries properties. A significant concern is the occurrence of hotspots, where localized intense illumination can lead to non-uniform luminance across display surfaces.

[0004] Moreover, when additional lighting modalities or specific luminance patterns are required, separate light sources are frequently required, further complicating the design and increase manufacturing costs.

[0005] Recognizing the above limitations, there is a need for an enhanced display device that can address at least the above issues.Summary

[0006] According to various embodiments, there may be provided a display device. The display device may include a first panel having a surface with at least one partially reflective region, and may further include a second panel having a surface with at least one reflective region and at least one light-transmissive region. The first panel and the second panel may be arranged in a parallel and spaced apart manner, with the surface of the first panel facing the surface of the second panel. The display device may further include a light-transmission body having a light-input face for light to enter the light-transmission body, and having a primary light-output portion for the light that enters the light-transmission body to exit therefrom. The display device may further include a light source disposed relative to the light-input face of the light-transmission body so as to be capable of emitting the light into the light-transmission body through the lightinput face. The second panel may be between the first panel and the primary lightoutput portion of the light-transmission body The light-transmission body may channel the light that is emitted by the light source, through the light-transmission body from the light-input face to the primary light-output portion of the light -transmission body, to cause the light to pass through the second panel, via the at least one light-transmissive region of the second panel, towards the first panel for partial reflection of the light by the at least one partially reflective region of the first panel.Brief description of the drawings[00071 In the drawings, like reference characters generally refer to the same parts throughout the different views. The drawings are not necessarily to scale, emphasis instead generally being placed upon illustrating the principles of the invention. In the following description, various embodiments are described with reference to the following drawings:FIG. 1A schematically depicts a display device, according to various embodiments;FIG. IB schematically depicts the display device of FIG. 1 A having an auxiliary light source, according to various embodiments;FIG. 2A schematically depicts a partial cross-sectional side view of a display device having a set of side-emitting light source(s), according to various embodiments;FIG. 2B shows a close-up view of FIG. 2A, according to various embodiments; FIG. 2C shows a close-up view of a second surface of a panel structure of a light-transmission body, serving as a light-directing portion of the light-transmission body, of the display device of FIG. 2A, according to various embodiments;FIG. 2D shows an isolated, cross-sectional side view of the panel structure of the light-transmission body of the display device of FIG. 2A, with the set of sideemitting light source(s) and a set of auxiliary side-emitting light source(s), according to various embodiments;FIG. 3A shows a perspective view of a display device in the form of a circularshaped infinity mirror, according to various embodiments;FIG. 3B shows a schematic plan view of the display device of FIG. 3 A, with a light-transmission body having a first arrangement of texture formations, according to various embodiments;FIG. 3C shows a schematic plan view of the display device of FIG. 3 A, with its light-transmission body having a second arrangement of texture formations, according to various embodiments; andFIG. 3D is a close-up view of FIG. 3C, according to various embodiments.Detailed description

[0008] Embodiments described below in context of the apparatus are analogously valid for the respective methods, and vice versa. Furthermore, it will be understood that the embodiments described below may be combined, for example, a part of one embodiment may be combined with a part of another embodiment.

[0009] It should be understood that the terms “on”, “over”, “top”, “bottom”, “down”, “side”, “back”, “left”, “right”, “front”, “lateral”, “up” etc., when used in the following description are used for convenience and to aid understanding of relative positions or directions, and not intended to limit the orientation of any device, or structure or any part of any device or structure. In addition, the singular terms “a”, “an”, and “the” include plural references unless context clearly indicates otherwise. Similarly, the word “or” is intended to include “and” unless the context clearly indicates otherwise.

[0010] Various embodiments generally relate to a display device configured to generate a sense of depth, which may make the display device appear more dimensional or immersive.

[0011] In particular, the display device, according to the various embodiments, may feature a strategic layout of light source(s) as well as a light-distribution system or arrangement within the display device, enabling effective management of light transmission, achieving reduced glare, and increased energy efficiency.

[0012] According to the various embodiments, the display device may have a wide array of applications across multiple domains, including display technology, lighting systems, notification and warning systems, illumination systems for forward-facingapplications, such as headlight assemblies, and immersive technologies such as gaming and simulated environments.

[0013] FIG. 1A schematically depicts a display device 100, according to various embodiments.

[0014] According to various embodiments, there may be provided the display device 100. According to various embodiments, the display device 100 may be configured to create and display a multi -reflection mirror image effect, also known as an “infinity minor” effect.

[0015] According to various embodiments, the display device 100 may include a housing 101. Specifically, the housing 101 may take the form of a casing, a frame (e.g. a support frame), a chassis, or any suitable structure (e g. a rigid support beam) configured to support and / or accommodate one or more other components of the display device 100. According to various embodiments, the housing 101 may be a rigid (e.g. at least substantially rigid) housing 101. For instance, the housing 101 may be composed of a rigid material or material composite, such as a rigid polymer or plastic, wood, ceramic, glass, fiberglass, carbon fiber, etc., or any other suitable rigid material. Thus, according to various embodiments, the housing 101 may function as a support structure, to which one or more other components of the display device 100 may be coupled (e.g. detachably coupled, or fixedly or immovably coupled) or affixed.

[0016] According to various embodiments, with reference to FIG. 1A, the display device 100 may include a first panel 110 (e.g. a first planar or flat, or substantially planar or flat, panel). According to various embodiments, the first panel 110 may be a light-transmissible (e g. partially light-transmissible or partially light-permeable) as well as reflective (e.g. partially reflective) panel, such as a two-way mirror or a semitransparent mirror.

[0017] For instance, according to various embodiments, the first panel 110 may include a surface (e.g. a partial-transmissive and / or a rear or rearward-facing surface) (herein may be referred to as “rear surface”, for ease of description).

[0018] Further, according to various embodiments, the first panel 110 may include another surface (e.g. a partial-reflective and / or a front or forward-facing surface) (herein may be referred to as “front surface”, for ease of description) opposite the rear surface. According to various embodiments, the rear surface and the front surface of the first panel 110 may be, but are not limited to being, parallel to each other. Accordingto various embodiments, the front surface may have at least one partially reflective region. In other words, at least one region of the front surface, or the entire front surface itself, for instance, an internal or inner side of the front surface, of the first panel 110 may possess a property of being partially reflective, configured to reflect a portion or a fraction of light that hits it while allowing the remaining portion or fraction of the light to pass through it. According to various embodiments, an external or outer side of the front surface may be configured to face outwards of the display device 100 (e.g. towards an external observer or viewer of the display device 100). Hence, according to various embodiments, the front surface of the first panel 110 may also correspond to an “observer side” or “viewing side” of the display device 100.

[0019] As an illustration, according to various embodiments, the first panel 110 may include, or may be composed of, a light-permeable (e.g. transparent or translucent) substrate, such as glass or acrylic, having a partially reflective coating, film or layer (e.g. partially reflective metallic coating, film or layer, such as aluminium, silver, etc ). According to various embodiments, the partially reflective coating may be at a region of a front surface of the light-permeable substrate of the first panel 110, or may be deposited over the entire front surface of the light-permeable substrate of the first panel 1 10. According to various embodiments, the partially reflective coating may be reflective (e.g. partially reflective) on at least one side (herein may be referred to as “partially reflective side”) of the partially reflective coating, which may be facing and / or interfaced (e.g. engaged) with the light-permeable substrate of the first panel 110. According to various embodiments, the partially reflective coating may be configured to allow some (i.e. a portion or fraction of) light to pass through it while reflecting a remainder of the light (e.g. that hits its partially reflective side). Accordingly, light directed towards a rear surface of the first panel 110 may enter the light-permeable substrate of the first panel 110 via the rear surface of the light- permeable substrate of the first panel 1 10, followed by being partially reflected by the partially reflective side of the partially reflective coating at the front surface of the light- permeable substrate of the first panel 110 as well as partially transmitting through the partially reflective coating at the front surface of the light-permeable substrate of the first panel 110.

[0020] It is also envisaged that, in various other embodiments, the partially reflective coating may be deposited onto the rear surface of the light-permeablesubstrate of the first panel 110, with the partially reflective side of the partially reflective coating facing away from (e.g. rearwards of) the light-permeable substrate of the first panel 110. In these other embodiments, some of the light directed towards the rear surface of the first panel 1 10 may be partially reflected by the partially reflective coating at the rear surface of the light-permeable substrate of the first panel 110 while a remaining portion of the light may be transmitted through and across the partially reflective coating and the light-permeable substrate of the first panel 110 before exiting the (uncoated) front surface of the light-permeable substrate of the first panel 110.

[0021] It is also envisaged that, in yet other embodiments, a two-way mirror film, in particular, a bidirectional two-way mirror film, may be disposed on either the front surface or the rear surface of the light-permeable substrate of the first panel 110.

[0022] As an example, according to various embodiments, the first panel 110 may have a Reflectance value which may be higher than its Transmittance value. In other words, the first panel 110 (e.g. its front surface with the at least one partially reflective region) may reflect a higher percentage (or fraction) of light while allowing a lower percentage (or fraction) of light to pass through. Nevertheless, it is also envisaged that, in various other embodiments, the first panel 110 may have a Reflectance value which may be lower than its Transmittance value. As some examples, according to various embodiments, the first panel 110 may have a Reflectance / Transmittance ratio (or “Reflectance to Transmittance” ratio or “R / T” ratio), falling within a range between 90: 10 (corresponding to a Reflectance of 90% and a Transmittance of 10%) to 10:90 (corresponding to a Reflectance of 10% and a Transmittance of 90%).

[0023] According to various embodiments, with reference to FIG. 1A, the display device 100 may include (e.g. further include) a second panel 120 (e.g. a second planar or flat, or substantially planar or flat, panel). According to various embodiments, the second panel 120 may be a discrete and / or distinct and / or separate panel from the first panel 1 10. In particular, with reference to FIG. 1 A, according to various embodiments, the second panel 1 0 may be spaced apart from the first panel 110. In other words, the second panel 120 may be a distance away from, and not in direct contact nor in engagement with, the first panel 110. Furthermore, according to various embodiments, the first panel 110 and the second panel 120 may be arranged in a parallel arrangement relative to one another1000241 According to various embodiments, the second panel 120 may be a reflective (e.g. a fully reflective, highly reflective, or substantially reflective) panel, such as or resembling a plane mirror or a regular mirror (e.g. a high-reflectance mirror, a fully reflective mirror, a back-surface mirror, or a front-surface mirror, etc ). In particular, according to various embodiments, the second panel 120 may have a surface (herein may be referred to as “patterned-reflective surface”, for ease of description) having at least one reflective region 121 and at least one light -transmissive (e.g. light-permeable) region 122. According to various embodiments, the patterned-reflective surface of the second panel 120 may be a front surface of the second panel 120 (e.g. which may be directly facing the first panel 110), or it may be a rear surface (e.g. an internal or inner side of the rear surface) of the second panel 120 According to various embodiments, the patterned-reflective surface as well as the surface opposite the patterned-reflective surface of the second panel 120 may be, but are not limited to being, parallel to each other.[000251 As an illustration, according to various embodiments, the second panel 120 may include, or may be composed of, a light-permeable (e.g. transparent or translucent) substrate, such as glass or acrylic, having a reflective (e.g. fully reflective or high- reflectivity) coating, film or layer (e.g. metallic coating, film or layer, such as aluminium, silver, etc.) at, at least, one region of a surface of the light-permeable substrate (e.g. a front or a rear surface of the light-permeable substrate serving as the patterned-reflective surface), while other, remaining region(s) of the patterned- reflective surface of the light-permeable substrate may be free or devoid of the reflective coating. According to various embodiments, the reflective coating may be configured to reflect light on at least one side (herein may be referred to as “reflective side”) of the reflective coating. In particular, according to various embodiments, the reflective side of the reflective coating may possess a property of being highly reflective or fully reflective to light. As an example, according to various embodiments, the reflective coating may be deposited on a front surface (i.e. corresponding to a respective patterned-reflective surface) of the light-permeable substrate of the second panel 120, with the reflective side of the reflective coating facing away from the light-permeable substrate of the second panel 120 (e.g. thereby forming or resembling a front-surface mirror). As another example, according to various other embodiments, the reflective coating may be deposited on a rear surface (i.e. corresponding to a respective patterned-reflective surface) of the light-permeable substrate of the second panel 120, with the reflective side of the reflective coating facing inward of the light-permeable substrate of the second panel 120 towards the front surface of the light-permeable substrate of the second panel 120 (e.g. thereby forming or resembling a back-surface mirror).

[0026] Accordingly, according to various embodiments, the at least one region (or region(s)) of the second panel 120 with the reflective coating may correspond to the abovementioned reflective region(s) 121 of the second panel 120, while the other, remaining region(s) of the second panel 120 free or devoid of the reflective coating (in other words, uncoated region(s) of the second panel 120) may correspond to the abovementioned light-transmissive (e.g. light-permeable) region(s) 122 of the second panel 120. According to various embodiments, as the light-transmissive region(s) 122 of the second panel 120 may be uncoated (in other words, devoid of any opaque or light-obstructing coating, film or layer thereon), light may transmit (e.g. permeate) across the light-transmissive region(s) 122 of the second panel 120, between opposite surfaces of the second panel 120 (i.e. including the patterned-reflective surface of the second panel 120).

[0027] According to various embodiments, the first panel 110 and the second panel 120 of the display device 100 maybe arranged in a manner such that the aforementioned front surface of the first panel 110 (i.e. with at least one partially reflective region) may be facing the aforementioned patterned-reflective surface of the second panel 120 (i.e. with at least one reflective region 121 and at least one light-transmissive region 122) in a manner such that light may be reflected between the first panel 110 and the second panel 120. In particular, according to various embodiments, an internal or inner side of the front surface of the first panel 110 may indirectly face the patterned-reflective surface of the second panel 120, through the rear surface of the first panel 110, with the rear surface of the first panel 110 being between the front surface of the first panel 110 and the patterned-reflective surface of the second panel 120. As such, according to various embodiments, when the partially reflective coating is coated on the front surface of the first panel 110, the partially reflective side of the first panel 110 (e.g. the partially reflective side of the partially reflective coating) may be directed towards or facing the reflective (i.e. fully or highly reflective) side of the second panel 120.

[0028] Specifically, according to various embodiments, the second panel 120 - which may be configured as a front-surface mirror or a back-surface mirror - may beoriented with its front surface directly opposing and directly facing the rear surface of the first panel 110. In other words, a distance between the front surface of the second panel 120 and the rear surface of the first panel 110 may be shorter than a distance between the rear surface of the second panel 120 and the front surface of the first panel 110.

[0029] According to various embodiments, the display device 100 may include (e g. further include) a (or at least one) light source 161. As some examples, according to various embodiments, the light source 161 may include or may be a light-emitting diode (LED), a neon tube, an incandescent bulb, a halogen lamp, etc., or any other type of light source. According to various embodiments, the light source 161 may be configured to provide light for illuminating an area or space between the first panel 110 and the second panel 120 to create the “infinity mirror” effect.[00030J According to various embodiments, as an illustration, depicted in FIG. 1A, within the display device 100, the light source 161 may be disposed on a plane (e.g. a reference plane, herein may be referred to as “light-source-positioning plane”) (not shown), which may (i.e. optionally / selectively) be located outside of the space between the first panel 110 and the second panel 120. In other words, the light-source- positioning plane may be located at a position other than between the first panel 1 10 and the second panel 120. In particular, according to various embodiments, the light source 161 may be disposed rearwards of the second panel 120. In other words, according to various embodiments, the light source 161 may be disposed on a lightsource-positioning plane which may be rearwards of the second panel 120. According to various embodiments, this light-source-positioning plane may be spaced apart from the second panel 120. In other words, the light source 161 may not be in direct contact or engagement with the second panel 120 Moreover, according to various embodiments, the light-source-positioning plane may be parallel to the second panel 120 Thus, according to various embodiments, when the display device 100 includes a plurality of light sources, all of the plurality of light sources may be arranged along a plane parallel to the second panel 120. Nevertheless, it is also envisaged that, in various other embodiments, the light-source-positioning plane may coincide with the first panel 110 or the second panel 120. That is, in various other embodiments, the light source 161 may be on a same level as the first panel 110 or the second panel 120 (e g. with respect to a rear or base of the housing 101 or the display device 100). It is alsoenvisaged that, in yet other embodiments, the light-source-positioning plane may be between the first panel 110 and the second panel 120.

[0031] According to various embodiments, the light source 161 may (i.e. optionally) be disposed or positioned in an offset manner from the at least one light-transmissive region 122 of the second panel 120. That is, the light source 161 may be offset from an axis (e.g. a reference axis, herein may be referred to as “light-transmissive axis”) (not shown) extending across the light-transmissive region 122 of the second panel 120 and / or perpendicular (e.g. substantially perpendicular) to the second panel 120. In other words, the light-transmissive axis may not intersect the light source 161, and the light source 161 may be apart (or a distance away) from the light-transmissive axis of the second panel 120.

[0032] According to various embodiments, with reference to FIG. 1A, the display device 100 may include (e g. further include) a light-transmission body 130 configured to transmit and / or direct light from the light source 161 to the space between the first panel 110 and the second panel 120. According to various embodiments, the lighttransmission body 130 may be a waveguide (e.g. an optical waveguide or a lightguide) configured to channel and / or guide light (i.e. emitted by the light source 161) that enters the light-transmission body 130 to one or more light-output portion(s) of the lighttransmission body 130. As an illustration, according to various embodiments, the lighttransmission body 130 may be configured to channel and / or guide light through internal reflection, including total internal reflection (e.g. using one or more internal or inner side(s) of one or more surface(s) of the light-transmission body 130). As some examples, according to various embodiments, the light-transmission body 130 may include or may be composed of a light-permeable material or material composite, such as glass, polymer (i.e. a light-permeable polymer, such as acrylic, plastic), silicon (i.e. a light-permeable silicon), or any other suitable light-permeable material. In particular, according to various embodiments, any one or more surfaces of the light-transmission body 130 may be configured or machined with a glossy (or a high-gloss) polish or finish.

[0033] According to various embodiments, the light-transmission body 130 may include a light-input face 131 for light (i.e. emitted by the light source 161) to enter the light-transmission body 130. As some examples, according to various embodiments, the light-input face 131 may include or may be a (e.g. a single) designated surface (e g.a flat or planar surface, or a continuous curved surface) of the light-transmission body130, or it may be multiple designated surfaces (e.g. adjoining surfaces) of the lighttransmission body 130. According to various embodiments, the light source 161 may be capable of optical communication with, or may be optically coupled to, the lightinput face 131. For instance, the light-input face 131 of the light-transmission body 130 and the light source 161 may be in optical proximity and / or in optical alignment with each other. In other words, according to various embodiments, the light source 161 may be disposed relative to the light-input face 1 1 of the light-transmission body 130 so as to be capable of emitting the light into the light -transmission body 130 through the light-input face 131. As an illustration, according to various embodiments, the light source 161 may be positioned adjacent to and / or directed towards (e g facing) the lightinput face 131 of the light-transmission body 130.[00034J According to various embodiments, the light-transmission body 130 may include (e.g. further include) a primary light-output portion 133 (e g. a first light-output portion) for the light that enters the light-transmission body 130 (i.e. via the light-input face 131) to exit therefrom. As some examples, according to various embodiments, this primary light-output portion 133 may include or may be a (e.g. single) designated surface (e g. flat, planar, or non-planar, curved, convex-shaped, etc., surface) of the light-transmission body 130, or it may be multiple designated surfaces (e.g. multiple adjoining surfaces) of the light-transmission body 130. Furthermore, according to various embodiments, the primary light-output portion 133 may be discrete and / or distinct from the light-input face 131 of the light-transmission body 130.

[0035] As an illustration according to various embodiments, the primary lightoutput portion 133 may include or may be a major or a principal (or a larger) surface of the light-transmission body 130, while the light-input face 131 may be a minor (e.g. a side or peripheral and / or a smaller) surface of the light-transmission body 130. According to various embodiments, the primary light-output portion 133 may be adjoining the light-input face 131, or it may be situated apart from the light-input face131.

[0036] According to various embodiments, the primary light-output portion 133 of the light-transmission body 130 may be positioned in a manner such that light exiting from the primary light-output portion 133 may be projected, transmitted, or directed towards the at least one light-transmissive region 122 of the second panel 120, to enterthe at least one light-transmissive region 122. For instance, according to various embodiments, the primary light-output portion 133 may be disposed rearwards of the second panel 120. That is, according to various embodiments, the second panel 120 may be between the primary light-output portion 133 of the light-transmission body 130 and the first panel 110. In other words, the primary light-output portion 133 may be at one side (e.g. a rear side) of the second panel 120, while the first panel 1 10 may be at another, opposite side (e.g. a front side) of the second panel 120.[000371 Furthermore, according to various embodiments, the primary light-output portion 133 may be optically coupled to the at least one light-transmissive region 122 of the second panel 120. For instance, according to various embodiments, the primary light-output portion 133 may be directed towards (in other words, may be facing or directly facing) the at least one light-transmissive region 122 of the second panel 120, from the rear side of the second panel 120. According to various embodiments, the primary light-output portion 133 (or at least a region or segment thereof) may be aligned with (e.g. directly rearward of) the at least one light-transmissive region 122 of the second panel 120 (in other words, may be intersected by the light-transmissive axis of the light-transmissive region 122 of the second panel 120).

[0038] Furthermore, according to various embodiments, the at least one light- transmissive region 122 of the second panel 120 may be aligned with the at least one partially reflective region of the first panel 110 of the display device.

[0039] With the above setup, according to various embodiments, the lighttransmission body 130 may (be configured to) channel and / or guide the light (i.e. that is emitted by the light source 161 into the light-transmission body 130 via the lightinput face 131 of the light-transmission body 130), through the light-transmission body 130, from its light-input face 131 to its primary light-output portion 133, to cause the light to pass through the second panel 120 (i.e. via the at least one light-transmissive region 122 of the second panel 120) towards (or to) the first panel 1 10 so that the light may be partially reflected by the at least one partially reflective region of the first panel 110. As a result, the light may be repeatedly (or successively) reflected between the first panel 110 and the second panel 120, while also partially transmitting through the first panel 110, thereby creating a multi -reflection mirror image effect, also known as an “infinity mirror” effect for an external observer or viewer of the display device 100 (i.e. at the observer side of the display device 100). Accordin to various embodiments,the aforementioned “infinity mirror” effect (e.g. its shape) may correspond to (e.g. may match or resemble) a shape of the at least one light-transmissive region 122 of the second panel 120.

[0040] According to various embodiments, the above arrangement of the light source 161 relative to the other component(s) of the display device 100 may minimize or eliminate hotspots within the display device 100, with enhanced energy efficiency of the display device 100 while still being capable of displaying an “infinity mirror” effect with uniform luminance, resulting in an improved overall visual experience with a sense of perceived depth for the viewer of the display device 100.

[0041] According to various embodiments, to further facilitate channeling and / or directing of the light (i.e. along the light-transmission body 130) to the primary lightoutput portion 133 of the light-transmission body 130, the light-transmission body 130 may include (e.g. further include) a light-directing portion (see, for example, reference 238B in FIG. 2D) opposite (e.g. directly opposite or substantially opposite) and / or facing the primary light-output portion 133 of the light -transmission body 130. According to various embodiments, this light-directing portion may include or may be one or more designated surfaces of the light-directing portion which may be opposite and / or facing the primary light-output portion 133 of the light-transmission body 130. According to various embodiments, the light-directing portion may be non-parallel relative to the primary light-output portion 133 and / or the light-input face 131 of the light-transmission body 130. For instance, the light-directing portion may form an internal acute angle (i.e. measuring less than 90°) with respect to each of the primary light-output portion 133 and / or the light-input face 131 of the light-transmission body 130. It is also envisaged that, in various other embodiments, the light-directing portion may form an internal obtuse angle (i.e. measuring more than 90° but less than 180°) with respect to the primary light-output portion 133 or the light-input face 131 of the light-transmission body 130 (e g. depending on a desired light output direction or a desired light-input direction). With this orientation, according to various embodiments, the light-directing portion may aid in directing (e.g. internally reflecting) at least some or most of the light (i.e. that enters the light-transmission body 130 through the lightinput face 131) to the primary light-output portion 133 of the light-transmission body|000421 According to various embodiments, the display device 100 may include (e.g. further include) a light-reflecting layer (see, for example, reference 250 in FIG. 2A) disposed on and / or over the light-transmission body 130, opposite the primary lightoutput portion 133, such that the light-reflecting layer (e.g. its reflective side) faces the primary light-output portion 133 of the light-transmission body 130. According to various embodiments, this light-reflecting layer may be disposed on (and / or over) and / or interfaced (e.g. engaged) with the light-directing portion of the lighttransmission body 130. In particular, according to various embodiments, lightreflecting layer may be rearward of the light-transmission body 130, with the reflective side of the light-reflecting layer facing or oriented towards the primary light-output portion 133 of the light-transmission body 130.

[0043] It is also envisaged that, in various other embodiments, the light-directing portion (e.g. an inner side of a surface of the light-transmission body 130 serving as the light-directing portion) may be configured to be reflective or possess reflective properties.

[0044] According to various embodiments, with reference to FIG. 1A, the lighttransmission body 130 may include (e.g. further include) an auxiliary light-output portion 134 (e g. a second light-output portion) (depicted in dashed lines) for the light that enters the light-transmission body 130 (i.e. via the light-input face 131) to exit therefrom. In other words, the light-transmission body 130 may be configured such that light that enters the light-transmission body 130 (i.e. via the light-input face 131) may exit from both the primary light-output portion 133 as well as the auxiliary light-output portion 134. Specifically, according to various embodiments, the light-transmission body 130 may be configured to channel or guide a portion of the light that enters the light-transmission body 130 (i.e. via the light-input face 131) to exit from the primary light-output portion 133, while another portion of the light that enters the lighttransmission body 130 (i.e. via the light-input face 131) may be channeled or guided by the light-transmission body 130 to exit from the auxiliary light-output portion 134. In other words, according to various embodiments, the light-transmission body 130 may be configured with multiple light-output portions (or light-output points) - which may be associated with (e.g. optically coupled to) a (or each single, respective) lightinput face 131 (or light-input point) of the light-transmission body 130. In other words, according to various embodiments, the light-transmission body 130 may define at leastone light path (e.g. continuous and / or non-linear light path, or optical path, etc.) from the light-input face 131 to a plurality of light-output points (e.g. to both the primary light-output portion 133 and the auxiliary light-output portion 134) of the lighttransmission body 130.

[0045] According to various embodiments, the auxiliary light-output portion 134 may be a discrete and / or distinct portion from the primary light-output portion 133 and / or from the light-input face 131 of the light-transmission body 130.

[0046] According to various embodiments, the auxiliary light-output portion 134 may be located at a location or area within the display device 100, which differs from a location of the primary light-output portion 133. For instance, with reference to FIG. 1A, according to various embodiments, the auxiliary light-output portion 134 may be disposed along a plane (e.g. reference plane, not shown) which may be between the first panel 110 and the second panel 120. In particular, this plane (as well as the auxiliary light-output portion 134 disposed along this plane) may be spaced apart from the first panel 110 and / or the second panel 120. On the other hand, the primary light-output portion 133 may be disposed along another plane (e.g. reference plane, not shown) which may be rearwards of the second panel 120. As such, according to various embodiments, the primary light-output portion 133 and the auxiliary light-output portion 134 may be situated on opposite sides of the second panel 120. Accordingly, according to various embodiments, the primary light-output portion 133 and the auxiliary light-output portion 134 of the light-transmission body 130 may result in the light-transmission body 130 channeling and outputting light (i.e. that enters via its lightinput face 131) at or to different areas or locations, or at or along different planes, within the display device 100 (e.g. forward and rearward of the second panel 120 of the display device 100).

[0047] According to various embodiments, the plane on which the primary lightoutput portion 133 may be as well as the plane on which the auxiliary light-output portion 134 may be may be parallel (e.g. substantially parallel) to each other and / or parallel to the second panel 120 of the display device 100. Accordingly, according to various embodiments, the primary light-output portion 133 and the auxiliary lightoutput portion 134 may be parallel (e.g. substantially parallel) to each other and / or parallel to the second panel 120 of the display device 100.|00048| With reference to FIG. 1A, according to various embodiments, the auxiliary light-output portion 134 may be disposed or positioned proximal (or at) a peripheral edge region of the first panel 110 and / or the second panel 120. That is, the auxiliary light-output portion 134 may be aligned with and / or may be directly between the peripheral edge regions of the first panel 110 and the second panel 120. Alternatively, the auxiliary light-output portion 134 may be proximal (e g. situated near to) but outside the boundaries of the first panel 110 and the second panel 120 (in other words, may be positioned in an offset manner from the first panel 110 and the second panel 120). According to various embodiments, the auxiliary light-output portion 134 may additionally be aligned with a shoulder portion 103 of the housing 101 (e.g. an inwardextending flange portion, for instance, at a front of the housing 101) of the display device 100. According to various embodiments, this shoulder portion 103 of the housing 101 may be opaque and configured to hide the auxiliary light-output portion 134 from an observer’s view at the observer side of the display device 100.[000491 As an example, according to various embodiments, the auxiliary light-output portion 134 may be an annular-shaped (e.g. circular or oval ring-shape, square-annular shape, etc.) portion. In particular, the auxiliary light-output portion 134 may form a continuous (or uninterrupted) loop or ring around (e.g. surrounding, encircling, etc.) the light-transmissive axis / axes of the light-transmissive region(s) 122 of the second panel 120. In this manner, according to various embodiments, light which exits the primary light-output portion 133 of the light-transmission body 130 may pass through the light- transmissive region(s) 122 of the second panel 120 to the first panel 110, without interference from the annular-shaped auxiliary light-output portion 134.

[0050] According to various embodiments, the light which exits the auxiliary lightoutput portion 134 between the peripheral edge regions of the first panel 110 and the second panel 120 may be repeatedly (or successively) reflected between the peripheral edge regions of the first panel 1 10 and the second panel 120, while also partially transmitting through the first panel 110, to create an auxiliary (or another) multireflection mirror image effect at a peripheral edge region of the display device 100. According to various embodiments, this auxiliary multi-reflection mirror image effect at the peripheral edge region of the display device 100 may differ from and / or may be discrete (and / or distinct and / or separate) from the previously described multi-reflection mirror image formed using the light-transmissive region(s) 122 of the second panel 120.|00051| As such, according to various embodiments, the display device 100 may create multiple (e.g. different, discrete, distinct, and / or separate) multi-reflection mirror image effects at the observer side of the display device 100 using at least one light source 161 which may be positioned at (e g. at only) a (e g. a single) location or plane (e.g. the light-source-positioning plane) within the display device 100. In particular, the light source 161 (or all light source(s)) of the display assembly may (all) be disposed along a single or same reference plane (e.g. the light-source-positioning plane) while still being able to illuminate different portions, locations, or areas of (or within) the display device 100 to create a plurality of multi -reflection mirror image effects at the observer side of the display device 100.

[0052] FIG. IB schematically depicts the display device 100 of FIG. 1A having an auxiliary light source 162, according to various embodiments.[00053J According to various embodiments, with reference to FIG. IB, the display device 100 may include (e.g. further include) a (or at least one) auxiliary (or further) light source 162. According to various embodiments, the auxiliary light source 162 may be a discrete light source (e.g. a discrete LED) from the light source 161 (as previously described with reference to FIG. 1 A).

[0054] As illustrated in FIG. IB, according to various embodiments, the light source 161 and the auxiliary light source 162 may be disposed or positioned (or situated) along a single or same reference plane (e.g. the light-source-positioning plane). Particularly, with reference to FIG. IB, according to various embodiments, the light source 161 and the auxiliary light source 162 may be disposed at a same side of the second panel 120 (e.g. rearwards of the second panel 120). Nevertheless, it is also envisaged that, in various other embodiments, each of the light source 161 and the auxiliary light source 162 may be positioned at any other suitable location within the display device 100. In particular, in various other embodiments, the light-source- positioning plane (i.e. along which both the light source 161 and the auxiliary light source 162 may be positioned) may be situated at any other location within the display device 100.

[0055] According to various embodiments, with reference to FIG. IB, the light source 161 and the auxiliary light source 162 may be configured to emit light into different portions (or points or faces) of the light-transmission body 130.|00056| In particular, according to various embodiments, with reference to FIG. IB, the light-transmission body 130 of the display device 100 may include (e.g. further include) an auxiliary light-input face 132, which may be discrete and / or distinct and / or separate and / or apart from the light-input face 131 (as previously described with reference to FIG. 1A).

[0057] According to various embodiments, the auxiliary light source 162 may be capable of optical communication with, or may be optically coupled to, the auxiliary light-input face 132. For instance, the auxiliary light-input face 132 of the lighttransmission body 130 and the auxiliary light source 162 may be in optical proximity and / or in optical alignment with each other. In other words, according to various embodiments, the auxiliary light source 162 may be disposed relative to the auxiliary light-input face 132 of the light-transmission body 130 so as to be capable of emitting the light into the light-transmission body 130 through the auxiliary light -input face 132. As an illustration, according to various embodiments, the auxiliary light source 162 may be positioned adjacent to and / or directed towards (e.g. facing) the auxiliary lightinput face 132 of the light-transmission body 130.

[0058] As depicted in FIG. IB, according to various embodiments, the light source 161 and the auxiliary light source 162 may be disposed or positioned on opposite sides or regions (e.g. lateral regions or side regions) of the display device 100 (e.g. within the housing 101). In particular, according to various embodiments, the light source 161 may be disposed at (or may be within) a first region (e.g. a right side region) of the display device 100, while the auxiliary light source 162 may be disposed at (or may be within) a second region (e.g. a left side region) of the display device 100. According to various embodiments, the light source 161 and the auxiliary light source 162 - which may be at or within different regions of the display device 100 - may be aligned with and / or located opposite (e.g. substantially opposite) one another.

[0059] Similarly, according to various embodiments, the light-input face 131 of the light-transmission body 130 (i.e. associated with the light source 161) may be situated at the first region (e.g. the right side region) of the light-transmission body 130, while the auxiliary light-input face 132 of the light-transmission body 130 (i.e. associated with the auxiliary light source 162) may be at the second region (e.g. left side region) of the light-transmission body 130. According to various embodiments, the light-inputface 131 and the auxiliary light-input face 132 may be aligned with and / or located opposite (e.g. substantially opposite) one another within the display device 100.

[0060] According to various embodiments, the light-input face 131 and the auxiliary light-input face 132 may be facing or directed towards one another.

[0061] According to various embodiments, to prevent or minimize optical cross-talk between light emitted by the light source 161 and light emitted by the auxiliary light source 162, the light-transmission body 130 may be configured to channel or direct the light (e.g. at least some or most of the light) that is emitted by the light source 161 to (e.g. directly and / or to only) the primary light-output portion 133 and the auxiliary lightoutput portion 134 (e.g. when the light-transmission body 130 includes the auxiliary light-output portion 134), and further configured to channel or direct the light (e.g. at least some or most of the light) that is emitted by the auxiliary light source 162 to (e.g. directly and / or to only) the primary light-output portion 133 and the auxiliary lightoutput portion 134 (e.g. when the light-transmission body 130 includes the auxiliary light-output portion 134). As such, according to various embodiments, the lighttransmission body 130 may be configured to optically decouple (e.g. substantially optically decouple) the light source 161 and the auxiliary light source 162.

[0062] Accordingly, according to various embodiments, at least a pair of opposite light sources (e.g. the light source 161 and the auxiliary light source 162) may be optically decoupled or separated (e.g. substantially optically decoupled or separated) from one another, within the display device 100. In this manner, according to various embodiments, the light source 161 may be associated with (e g. optically coupled to) a first light-transmissive region 122 of the second panel 120, while the auxiliary light source 162 may be associated with (e.g. optically coupled to) a second (or another, discrete and / or distinct and / or separate) light-transmissive region 122 of the second panel 120, without any interference by the light source 161. Hence, as an illustration, according to various embodiments, the light source 161 and the auxiliary light source 162 may be configured to emit light with different colours, different brightness, etc., to respective light-transmissive regions 122 of the second panel 120, without optical interference from one another.

[0063] According to various embodiments, the light source 161 and the auxiliary light source 162 may together form or be part of a lighting arrangement. In particular, according to various embodiments, the light source 161 and the auxiliary light source162 may be disposed onto a same (e.g. a single) circuit board 163. According to various embodiments, the circuit board 163 may have a planar shape (e.g. rectangular shape), may be annular-shaped, or may have any other suitable shape or geometry. As some examples, according to various embodiments, the circuit board 163 may include or may be a printed circuit board (PCB), a flexible circuit board or flexible PCB, a rigid circuit board or rigid PCB, a metal core circuit board or metal core PCB, etc. Furthermore, according to various embodiments, the display device 100 may include a processor or a controller (not shown) coupled to the light source 161 and / or the auxiliary light source 162. According to various embodiments, the controller may be configured to control the light source 161 and / or the auxiliary light source 162. For instance, the processor may be configured to adjust a colour temperature, brightness, and / or duration of illumination, etc., of the light source 161 and / or the auxiliary light source 162.

[0064] FIG. 2A schematically depicts a partial cross-sectional side view of a display device 200 having at least one set of side-emitting light source(s) 261, according to various embodiments.

[0065] FIG. 2B shows a close-up view of FIG. 2A, according to various embodiments.

[0066] According to various embodiments, there may be provided the display device 200.

[0067] According to various embodiments, the display device 200 may contain any one or more or all the features and / or limitations of the display device 100 of FIG. 1A and FIG. IB. In the following, the display device 200 is described with like reference characters generally referring to the same or corresponding parts / features of the display device 100 of FIG. 1A and FIG. IB. The description of the parts / features made with respect to the display device 200 may also be applicable with respect to the display device 100, and vice versa.

[0068] According to various embodiments, with reference to FIG. 2A and FIG. 2B, the display device 200 may, similar to the display device 100 of FIG. 1 A and FIG. IB, include a housing 201.

[0069] According to various embodiments, with reference to FIG. 2A and FIG. 2B, the display device 200 may, similar to the display device 100 of FIG. 1A and FIG. IB, include (e g. further include) a first panel 210. In particular, the first panel 210 may include a surface (e.g. a rear or rearward-facing surface) (herein may be referred to as“rear surface”, for ease of description). Further, according to various embodiments, the first panel 210 may include another surface (e.g. a front or forward-facing surface) (herein may be referred to as “front surface”, for ease of description) opposite the rear surface. According to various embodiments, the front surface or the rear surface of the first panel 210 may have at least one partially reflective region. For instance, according to various embodiments, a substantial area of the front surface or the rear surface, or the entire surface itself, of the first panel 210 may be configured to be partially reflective, so as to be capable of reflecting a portion of light that hits it while allowing a remaining portion of the light to pass through it. According to various embodiments, the remaining one of the front surface or the rear surface of the first panel 210 may be light- transmissive (e g. at least partially light-transmissive), allowing light to pass through it. As an illustration, according to various embodiments, the first panel 210, having the aforesaid front surface and rear surface, may function as a two-way mirror.

[0070] According to various embodiments, with reference to FIG. 2A and FIG. 2B, the display device 200 may, similar to the display device 100 of FIG. 1A and FIG. IB, include (e.g. further include) a second panel 220. In particular, the second panel 220 may include a surface (herein may be referred to as “patterned-reflective surface”, for ease of description) having at least one reflective region 221 and at least one light- transmissive region 222. As an illustration, according to various embodiments, the second panel 220 (e.g. at least where it has the at least one reflective region 221) may be configured or function as a plane mirror or a regular mirror (e.g. a high-reflectance mirror, a fully reflective mirror, a back-surface mirror, or a front-surface mirror, etc ). On the other hand, according to various embodiments, the at least one light- transmissive region 222 of the second panel 220 may allow or enable light to be transmitted across that region of the second panel 220 (e g across or through the second panel 220).

[0071] For instance, with reference to FIG. 2A and FIG 2B, according to various embodiments, the second panel 220 of the display device 200 may include a reflective coating (or film or layer) 225 deposited on a light-permeable substrate (e.g. glass or acrylic) 224 of the second panel 220. According to various embodiments, the reflective coating 225 may be patterned to cover one or more region(s) of a surface (e.g. a single, respective surface) of the light-permeable substrate 224, while leaving other, remaining region(s) of the aforementioned surface of the light-permeable substrate 224 uncoated.As a non-limiting example, with reference to FIG. 2A and FIG. 2B, the reflective coating 225 may be deposited onto a rear surface of the light-permeable substrate 224 (i.e. corresponding to a respective patterned -reflective surface of the second panel 220), thereby forming (or resembling) a back-surface mirror. In particular, in this example, according to various embodiments, a reflective side of the reflective coating 225 may be facing and / or interfaced (e.g. engaged) with the rear surface of the light-permeable substrate 224. Nevertheless, it is also envisaged that, in various other embodiments (not shown), the reflective coating 225 may be deposited on a front surface of the light- permeable substrate 224, with a reflective side of the reflective coating 225 facing outwards, away from the light-permeable substrate 224, thereby forming (or resembling) a front-surface mirror.

[0072] Specifically, according to various embodiments, the reflective coating 225 may partially cover (in other words, cover only a fraction or portion of) a total area of the aforementioned surface (i.e. front or rear surface, serving as the patterned-reflective surface) of the light-permeable substrate 224 of the second panel 220, with the other, remaining portion of the aforementioned surface (i.e. front or rear surface, serving as the patterned-reflective surface) of the light-permeable substrate 224 may be uncoated or devoid of the reflective coating 225 and / or any other coating, film or layer (e g. which may obstruct light or may be opaque in nature). Accordingly, according to various embodiments, the coated regions(s) of the second panel 220 (i.e. coated with the reflective coating 225) may correspond to (or may serve or function as) the reflective region(s) 221 of the second panel 220, while the uncoated region(s) of the second panel 220 may correspond to (or may serve or function as) the light-transmissive region(s) 222 of the second panel 220.

[0073] As another illustration, according to various other embodiments (not shown), the at least one light-transmissive region 222 of the second panel 220 may include or may be at least one through-hole or opening extending across the second panel 220 (e g. across a thickness of the second panel 220), from the rear surface to the front surface of the second panel 220. In these other embodiments (not shown), the at least one through-hole may permit or allow light transmission across the second panel 220, via the at least one through-hole or opening.

[0074] According to various embodiments, with reference to FIG. 2A and FIG. 2B, the first panel 210 (e.g. a two-way mirror) and the second panel 220 (e.g. a plane mirror)of the display device 200 may be spaced apart from each other by a distance. Thus, according to various embodiments, the first panel 210 and the second panel 220 may define a space or gap (e.g. a hollow and / or unobstructed space or gap) therebetween.

[0075] Furthermore, according to various embodiments, the first panel 210 and the second panel 220 may be arranged or oriented to be parallel (e.g. substantially parallel) to each other

[0076] Additionally, according to various embodiments, the surface of the first panel 210 with the at least one partially reflective region and the patterned-reflective surface of the second panel 220 (e.g. having the at least one reflective region 221 thereon) may be facing (in other words, directed or oriented towards) each other in a direct manner (without any intervening element or surface) or an indirect manner (e g. with an intervening element or surface). In particular, according to various embodiments, a reflective side of the second panel 220 (e.g. of the reflective coating 225 of the second panel 220) may be facing the partially reflective side of the first panel 210 (e.g. of the partially reflective coating of the first panel 210). As an example, shown in FIG. 2A, according to various embodiments, when the reflective coating 225 of the second panel 220 is deposited on the rear surface of the light-permeable substrate 224 of the second panel 220, the reflective side of the reflective coating 225 of the second panel 220 may be facing inwards of the second panel 220 (e.g. towards the light-permeable substrate 224 of the second panel 220) and towards the rear surface of the first panel 210 (i.e. which may be directly opposing the front surface of the light-permeable substrate 224 of the second panel 220). That is, according to various embodiments, the (uncoated) front surface of the light-permeable substrate 224 of the second panel 220 may be nearer to the rear surface of the first panel 210 than the (coated) rear surface of the light- permeable substrate 224 of the second panel 220 to the rear surface of the first panel 210. On the other hand, according to various embodiments, the partially reflective side of the partially reflective coating of the first panel 210 may be facing the reflective side of the reflective coating 225 of the second panel 220. For instance, when the partially reflective coating of the first panel 210 is deposited on the front surface of the light- permeable substrate of the first panel 210, the partially reflective side of the partially reflective coating of the first panel 210 may be facing inwards of the first panel 210 (e.g. towards the light-permeable substrate of the first panel 210) and towards the frontsurface of the second panel 220 (i.e. which may be directly opposing the rear surface of the light-permeable substrate of the first panel 210).

[0077] It is also envisaged that, in various other embodiments, the reflective coating 225 of the second panel 220 may be deposited on the front surface of the light- permeable substrate 224 of the second panel 220 with a reflective side of the reflective coating 225 of the second panel 220 facing away from the light-permeable substrate 224 of the second panel 220, while the partially reflective coating of the first panel 210 may be deposited on the rear surface of the light -permeable substrate of the first panel 210 with the partially reflective side of the partially reflective coating of the first panel 210 facing away from the light-permeable substrate of the first panel 210. In these other embodiments, the (coated) front surface of the light-permeable substrate 224 of the second panel 220 may be directly opposing and facing (and / or adjacent and / or directly rearwards of) the (coated) rear surface of the light-permeable substrate of the first panel 210.

[0078] According to various embodiments, with reference to FIG. 2A and FIG. 2B, the display device 200 may, similar to the display device 100 of FIG. 1A and FIG. IB, include (e.g. further include) at least one set (or group or sub-arrangement) of light source(s) 261 . As an example, shown in FIG. 2A and FIG 2B, each set of light source(s) 261 may include at least two light sources (e.g. two individual LEDs). Nevertheless, it is also envisaged that, in various other embodiments, each set of light source(s) 261 may include any other number of light source(s), for example, a single light source, or more than two light sources. Furthermore, as shown, all of the light sources 261 may be disposed onto a same (e.g. a single) circuit board 263 (e g. a PCB). According to various embodiments, each set of light source(s) 261 (e.g. the two light sources shown in FIG. 2A and FIG. 2B) may be configured to operate synchronously. Nevertheless, it is also envisaged that, in various other embodiments, each light source within each set of light source(s) 261 may be independently operable (or capable of independent operation, e.g. independent illumination).

[0079] According to various embodiments, each set of light source(s) 261 may be configured to emit light into a (e.g. a single, respective or discrete) light-input face 231 (e.g. a side-facing light-input face 231) of a light-transmission body 230 of the display device 200, described in detail later.|00080| According to various embodiments, the set of light source(s) 261 may be disposed on a plane (e.g. a reference plane, herein may be referred to as “light- sourcepositioning plane”) (not shown) within the display device 200. In particular, according to various embodiments, the light-source-positioning plane may be located at a position within the display device 200 other than between the first panel 210 and the second panel 220 of the display device 200. Specifically, with reference to FIG. 2A and FIG. 2B, according to various embodiments, the light-source-positioning plane and the set of light source(s) 261 may be disposed rearwards of the second panel 220. Nevertheless, it is also envisaged that, in various other embodiments (not shown), the light-source- positioning plane and the set of light source(s) 261 may be disposed at any other suitable location within the display device 200.

[0081] Furthermore, with reference to FIG. 2A and FIG. 2B, according to various embodiments, the set of light source(s) 261 may be disposed or positioned in an offset manner from the at least one light-transmissive region 222 of the second panel 220. That is, the set of light source(s) 261 may be offset or misaligned from an axis (e.g. a reference axis, herein may be referred to as “light-transmissive axis”) (not shown) extending across the light-transmissive region 222 of the second panel 220 and / or perpendicular (e g. substantially perpendicular) to the second panel 220 In other words, the light-transmissive axis may not intersect the set of light source(s) 261, and the set of light source(s) 261 may be apart (or a distance away) from the light-transmissive axis of the second panel 220.

[0082] In particular, with reference to FIG. 2A and FIG. 2B, the set of light source(s) 261 (e g. the entire set) may be aligned with (e.g. and positioned directly rearwards of) at least one reflective region 221 of the second panel 220. However, it is also envisaged that, in various other embodiments (not shown), a portion of the set of light source(s) 261 may be aligned with (e.g. positioned directly rearwards of) at least one reflective region 221 of the second panel 220, while a remaining portion of the set of light source(s) 261 may be aligned with (e.g. positioned directly rearwards of) at least one light-transmissive region 222 of the second panel 220.

[0083] With reference to FIG. 2A and FIG. 2B, according to various embodiments, the set of light source(s) 261 may be configured to emit light in a non-parallel manner relative to the light-transmissive axis of the light-transmissive region 222 of the second panel 220. That is, according to various embodiments, the set of light source(s) 261may be configured to emit light in one or more sideways or lateral direction(s) relative to a front and / or rear of the display device 200 (or relative to a linear reference axis extending perpendicularly or substantially perpendicularly to the first panel 210 and / or the second panel 220). In other words, according to various embodiments, an optical axis (or at least one optical axis or light-emitting direction) of the set of light source(s) 261 may be parallel (e.g. substantially parallel) to the first panel 210 and / or the second panel 220 of the display device 200, and / or perpendicular (e.g. substantially perpendicular) to the light-transmissive axis of the light-transmissive region 222 of the second panel 220. Hence, according to various embodiments, the set of light source(s) 261 may be configured as (or may correspond to) side-emitting (e.g. side-facing or sidefiring) light source(s).

[0084] According to various embodiments, with reference to FIG. 2A and FIG. 2B, the display device 200 may, similar to the display device 100 of FIG. 1A and FIG. IB, include (e.g. further include) a light-transmission body 230. Particularly, the lighttransmission body 230 may be configured to channel and / or guide light emitted by the set of light source(s) 261, through the light-transmission body 230, to, at least, the at least one light-transmissive region 222 of the second panel 220 of the display device 200.

[0085] According to various embodiments, similar to the light-transmission body 130 of the display device 100 of FIG. 1 A and FIG. IB, the light-transmission body 230 of the display device 200 may include a light-input face 231 for light emitted by the set of light source(s) 261 to enter the light-transmission body 230. In other words, according to various embodiments, the light-input face 231 of the light-transmission body 230 and the set of light source(s) 261 may be disposed relative to one another in a manner which enables the set of light source(s) 261 to be capable of emitting light into (e.g. directly into) the light-input face 231 of the light-transmission body 230. For instance, as shown in FIG. 2A, the light-input face 231 may include or may be an inner surface of the light-transmission body 230 which defines a hole 241 of the lighttransmission body 230 (described in detail later), with said inner surface (i.e. light-input face 231) aligned with and / or positioned adjacent to and / or facing the set of light source(s) 261.

[0086] According to various embodiments, similar to the light-transmission body 130 of the display device 100 of FIG. 1 A and FIG. IB, the light-transmission body 230of the display device 200 may include (e.g. further include) a primary light-output portion 233. According to various embodiments, the light-input face 231 may be optically coupled or optically connected to this primary light-output portion 233. In particular, according to various embodiments, the li ht-transmission body 230 may define at least one light path (e.g. continuous and / or non-linear light path, or optical path, etc.) from the light-input face 231 to the primary light-output portion 233. Accordingly, according to various embodiments, the light -transmission body 230 may be configured to channel or guide light (i.e. that enters the light-transmission body 230 via the light-input face 231), through the light-transmission body 230, from the lightinput face 231 to the primary light-output portion 233 for the light to exit therefrom.

[0087] According to various embodiments, with reference to FIG. 2A and FIG. 2B, the light-transmission body 230 may include or may be a panel (or panel-like) structure or a panel (or panel-like) segment or portion (herein may be referred to as “panel structure”, for ease of description). As shown, the panel structure 238 of the lighttransmission body 230 may include a first planar surface (e.g. a substantially planar or flat front surface) 238A as well as a second surface (e g. a rear surface) 238B opposite the first planar surface 238 A. According to various embodiments, the panel structure 238 may further include an outer side face (e g. one or more outer side surfaces, such as a single and continuous curved outer side surface, or a plurality of adjoining side surfaces, etc.). According to various embodiments, the outer side face may be between (e.g. extending between) the first planar surface 238A and the second surface 238B, in a non-parallel (e.g. inclined) manner to the first planar surface 238 A and / or the second surface 238B.

[0088] According to various embodiments, the first planar surface 238 A of the panel structure 238 may be configured or may serve as the primary light-output portion 233 of the light-transmission body 230. In other words, the primary light-output portion 233 of the light-transmission body 230 may include or may be the first planar surface 238A of the panel structure 238 of the light-transmission body 230. Thus, light that enters the light-transmission body 230 may exit from the first planar surface 238 A of the panel structure 238. As shown in FIG. 2A and FIG. 2B, according to various embodiments, the first planar surface 238 A of the panel structure 238 of the light-transmission body 230 may be disposed or positioned rearwards (or at a rear side) of the second panel 220 of the display device 200, while the first panel 210 of the display device 200 may bedisposed or positioned forward (or at a front side) of the second panel 220. Furthermore, as shown, the first planar surface 238 A of the panel structure 238 may be facing or directed towards the second panel 220. In particular, according to various embodiments, the first planar surface 238A (or at least a region thereof) may be aligned with and / or facing or directed towards the at least one light-transmissive region 222 of the second panel 220 of the display device 200.

[0089] Furthermore, as shown, the light-transmission body 230 (e.g. the first planar surface 238 A of its panel structure 238) may be engaged (e.g. directly contacting or interfacing) with the rear surface of the second panel 220 (e g. at least the light- transmissive region 222 of the second panel 220). Nevertheless, it is also envisaged that, in various other embodiments (not shown), the light-transmission body 230 (e g. the first planar surface 238A of the panel structure 238) may be spaced apart from the rear surface of the second panel 220.

[0090] In the above manner, according to various embodiments, light that exits the first planar surface 238A (i.e. the primary light-output portion 233) of the panel structure 238 of the light-transmission body 230 may be projected, transmitted, or channeled towards the at least one light-transmissive region 222 of the second panel 220 and may, in turn, pass (or transmit or permeate) through the at least one light- transmissive region 222 of the second panel 220, for subsequent partial reflection by the first panel 210 to create the “infinity mirror” effect at the observer side of the display device 200.

[0091] According to various embodiments, with reference to FIG. 2A, to further facilitate guiding or channeling of the light (i.e. emitted by the light source 261, which enters light-transmission body 230) to the first planar surface 238A (i.e. the primary light-output portion 233) of the panel structure 238 of the light-transmission body 230, the second surface 238B of the panel structure 238 (or at least a segment of the second surface 238B), i.e. opposite the first planar surface 238A of the panel structure 238, may be configured or may serve as a light-directing portion of the light-transmission body 230. In particular, the second surface 238B of the panel structure 238 of the lighttransmission body 230 may be configured to channel or direct (e.g. internally reflect) light (or at least a substantial portion of the light), that enters the light-transmission body 230 through the light-input face 231, to the first planar surface 238A (i.e. the primary light-output portion 233) of the panel structure 238 of the light-transmissionbody 230. To illustrate, with reference to FIG. 2 A, the second surface 238B of the panel structure 238 may be non-parallel (e.g. inclined) relative to the first planar surface 238A and / or to the light-input face 231 of the light-transmission body 230. In particular, according to various embodiments, the second surface 238B (or at least a segment thereof) of the panel structure 238 may form a respective acute internal angle with the first planar surface 238A and / or with the light-input face 231 , while still facing the first planar surface 238A and / or the light-input face 231 (i.e. in an inclined or nonparallel manner). Accordingly, light that enters the light-transmission body 230 through the light-input face 231 may be transmitted to the second surface 238B to be internally reflected by the (inclined) second surface 238B (or an inclined segment thereof) to the first planar surface 238A (i.e the primary light-output portion 233) of the panel structure 238 of the light-transmission body 230.[00092J According to various embodiments, with reference to FIG. 2A and FIG. 2B, the light-transmission body 230 may include (e.g. further include) at least one hole 241. As an illustration, shown in FIG. 2A and FIG. 2B, this at least one hole 241 may be located (or formed) at the panel structure 238 of the light-transmission body 230. For example, as shown in FIG. 2A and FIG. 2B, the hole 241 may be a blind hole 241, with a hole 241 opening thereof at the second surface 238B (e g. corresponding to the rear surface) of the panel structure 238 of the light-transmission body 230. Nevertheless, it is also envisaged that, in various other embodiments (not shown), the hole 241 may be a through-hole (e.g. extending from the second surface 238B to the opposite, first planar surface 238A of the panel structure 238) of the light-transmission body 230.

[0093] According to various embodiments, an inner face (e.g. one or more inner surfaces, such as a single and continuous curved inner surface, or a plurality of adjoining inner surfaces, etc.) of the light-transmission body 230 (e.g. the panel structure 238) defining (or surrounding) the at least one hole 241 (e.g. a circular-shaped hole 241 , or polygonal -shaped hole 241) may serve as the light-input face 231 of the light-transmission body 230. In other words, according to various embodiments, the light-input face 231 of the light-transmission body 230 may include or may be at least one inner surface (or all inner surfaces) defining the at least one hole 241 of the lighttransmission body 230. According to various embodiments, the light -input face 231 (i.e. the inner surface of the hole 241) may be non-parallel to both the first planar surface 238A as well as the second surface 238B of the panel structure 238 of the light-transmission body 230. For instance, according to various embodiments, the light-input face 231 may be perpendicular (e g. substantially perpendicular) to the first planar surface 238A, and may form an acute internal angle (i.e. measuring less than 90°) with respect to the second surface 238B (or with respect to a segment of the second surface 238B adjacent and / or adjoined to said light-input face 231). Such a configuration, according to various embodiments, may facilitate transmission of light from the lightinput face 231 to an inner side of the second surface 238B (i.e. serving as the lightdirecting portion) of the panel structure 238, at an angle (e.g. exceeding a critical angle) relative to the second surface 238B, thereby facilitating internal reflection (e g. total internal reflection) by the second surface 238B towards the first planar surface 238A (i.e. the primary light-output portion 233) of the light-transmission body 230.

[0094] Additionally, according to various embodiments, as shown in FIG. 2A and FIG. 2B, the light-input face 231 (i.e. the inner surface of the hole 241) may be parallel (e.g. substantially parallel) relative to the light-transmissive axis of the light- transmissive region 222 of the second panel 220 of the display device 200. Accordingly, the light-input face 231 (i .e. the inner surface of the hole 241) may be non-parallel (e.g. perpendicular or substantially perpendicular) to the second panel 220 of the display device 200.

[0095] According to various embodiments, to further enhance reflecting or channeling of the light (i.e. that enters the light-transmission body 230) to the primary light-output portion 233 of the light-transmission body 230, the display device 200 may include (e.g. further include) a light-reflecting layer 250 disposed over and / or on the light-transmission body 230, opposite the primary light-output portion 233 lighttransmission body 230. In particular, the light-reflecting layer 250 may be rearwards of the light-transmission body 230 (e.g. rearwards the panel structure 238 of the lighttransmission body 230). According to various embodiments, the light-reflecting layer 250 may have a reflective side which faces the primary light-output portion 233 of the light-transmission body 230. For instance, with reference to FIG. 2A and FIG. 2B, the light-reflecting layer 250 may be a coating, film or layer (e.g. discrete from the panel structure 238) which may be disposed directly on the second surface 238B (e.g. over a substantial area of the second surface 238B, or over the entire second surface 238B itself) of the panel structure 238 of the light-transmission body 230. Specifically, according to various embodiments, the light-reflecting layer 250 may include at leastone reflective side (i.e. possessing a light reflective property) which faces or is oriented towards the first planar surface 238A (i.e. the primary light-output portion 233) of the panel structure 238 of the light-transmission body 230. It is also envisaged that, in various other embodiments (not shown), the light-reflecting layer 250 may be indirectly coupled to the second surface 238B of the panel structure 238 of the light-transmission body 230, for instance, via an intervening light-permeable layer (not shown). According to various embodiments, as shown in FIG. 2A and FIG. 2B, the lightreflecting layer 250 may define or include a recess (or a cut-out region, groove, receptacle, etc.) for accommodating (e.g. partially accommodating) the set of light source(s) 261 and / or a circuit board 263 (described in detail later) for the set of light source(s) 261.

[0096] According to various embodiments, the set of light source(s) 261 may be disposed within a respective hole 241 of the panel structure 238 of the lighttransmission body 230. Accordingly, when the set of light source(s) 261 are operated to emit light, the light may enter the light-transmission body 230 via the inner surface of the hole 241 of the panel structure 238 (i.e. serving as the light-input face 231) of the light-transmission body 230. In particular, according to various embodiments, the set of light source(s) 261 may be configured such that an optical axis (or at least one optical axis or light-emitting direction) of the set of light source(s) 261 may intersect the lightinput face 231 of the light-transmission body 230. For instance, the set of light source(s) 261 may be aligned with and / or oriented towards the light-input face 231 (i.e. the inner surface of the hole 241) of the light-transmission body 230.

[0097] According to various embodiments, employing or configuring the inner surface of the hole 241 as the light-input face 231 of the light-transmission body 230 may lead to efficient or optimal light coupling from the set of light source(s) 261 to the light-transmission body 230, in turn, resulting in a more uniform distribution of light within the light-transmission body 230, reducing or preventing hotspots, and improving overall optical performance of the display device 200.

[0098] Additionally, according to various embodiments, the light-transmission body 230 may include or may be composed of a material or material composite having low thermal conductivity (e.g. glass, acrylic, etc.), such that the light-transmission body 230 may serve a dual function as a lightguide and as a heat insulator to minimize heat transfer between the set of light source(s) 261 and a surrounding environment withinthe display device 200 (e.g. within its housing 201). According to various embodiments, this, in turn, may facilitate thermal management of the display device 200, reducing potential thermal stresses and, ultimately, extending the lifespan of various sensitive component(s) of the display device 200.

[0099] According to various embodiments, with reference to FIG. 2A and FIG. 2B, the light-transmission body 230 may include (e.g. further include) an auxiliary lightoutput portion 234 for the light which enters the light-transmission body 230 to exit therefrom (e.g. in addition to exiting from the primary light-output portion 233). According to various embodiments, the auxiliary light-output portion 234 may be disposed along a different plane (e.g. a reference plane) (not shown) from the primary light-output portion 233 For instance, as shown in FIG. 2A and FIG. 2B, the auxiliary light-output portion 234 may be disposed along a plane (not shown) between the first panel 210 and the second panel 220, while the primary light-output portion 233 may be disposed along a further (or another) plane (not shown) on an opposite side of the second panel 220. In other words, according to various embodiments, the primary lightoutput portion 233 may be opposite the auxiliary light-output portion 234 (e g. with the second panel 220 of the display device 200 positioned between them). In other words, the auxiliary light-output portion 234 may be rearwards of the first panel 210, the second panel 220 may be rearwards of the auxiliary light-output portion 234, and the primary light-output portion 233 may be rearwards of the second panel 220. As such, according to various embodiments, the auxiliary light-output portion 234 may be disposed at a first distance from the first panel 210, and the primary light-output portion 233 may be disposed at a second distance from the first panel 210, with the second distance being larger than the first distance.[000100] According to various embodiments, the auxiliary light-output portion 234 (or a plane on which the entire auxiliary light-output portion 234 may be) may be spaced apart from the first panel 210 and / or the second panel 220. In other words, according to various embodiments, the auxiliary light-output portion 234 may be spaced apart from (i.e. not in contact with) the first panel 210 and / or the second panel 220.[000101] Furthermore, according to various embodiments, the auxiliary light-output portion 234 (or the plane on which the entire auxiliary light-output portion 234 may be) may be parallel (e.g. substantially parallel) to the first panel 210 and / or the second panel 220.|0001021 Additionally, according to various embodiments, the auxiliary light-output portion 234 (or the plane on which the entire auxiliary light-output portion 234 may be) may be parallel to the primary light-output portion 233 (or to the panel structure 238 of the light-transmission body 230 having the primary light-output portion 233) (or to the plane on which the entire primary light-output portion 233 or the panel structure 238 of the light-transmission body 230 may be).[000103] As an illustration, according to various embodiments, the auxiliary lightoutput portion 234 may include or may be (e.g. may be shaped as) an annular-shaped auxiliary light-output portion 234. According to various embodiments, this annularshaped auxiliary light-output portion 234 may run or extend continuously along a peripheral edge region of the first panel 210 and / or the second panel 220. According to various embodiments, the entire auxiliary light-output portion 234 (e.g. annular-shaped light-output portion) may be configured for light to exit or output therefrom and / or therealong. Thus, light exiting the entire annular-shaped auxiliary light-output portion 234 may produce a uniform and continuous illumination around or along the edges of the first panel 210 and / or the second panel 220, thereby generating a “halo-like” illumination effect at a border of the observer side of the display device 200. It is also envisaged that, in various other embodiments, the annular-shaped auxiliary light-output portion 234 may be configured such that light may not exit uniformly nor continuously along the annular-shaped auxiliary light-output portion 234. In other words, according to various other embodiments, the annular-shaped auxiliary light-output portion 234 may be configured to create breaks or discontinuities in its illumination from exiting light. For instance, according to various other embodiments, the annular-shaped auxiliary light-output portion 234 may include apertures or cut-outs which may cause the light to exit only through specific regions thereof. As another example, according to various other embodiments, a light-blocking material or coating may be employed to partially cover certain regions of the auxiliary light-output portion 234.[000104] According to various embodiments, the auxiliary light-output portion 234 may be configured to have at least an optical axis (or at least one optical axis or lightemitting direction) that is directed towards a central or an inner portion of the display device 200. In particular, the annular-shaped auxiliary light-output portion 234 may be configured such that at least a portion of the light exiting the auxiliary light-outputportion 234 may exit the auxiliary light-output portion 234 in one or more direction(s) towards the first panel 210 and / or the second panel 220.[000105] According to various embodiments, with reference to FIG. 2A and FIG. 2B, the light-transmission body 230 may include (e g. further include) a connecting portion 235 for light that enters the light-transmission body 230 to be transmissible therealong. In particular, the connecting portion 235 of the light-transmission body 230 may extend between (or from) the primary light-output portion 233 (or the panel structure 238) and (or to) the auxiliary light-output portion 234 of the light-transmission body 230. In other words, according to various embodiments, the primary light-output portion 233 and the auxiliary light-output portion 234 may be optically coupled to each other via an intermediate connecting portion 235 of the light-transmission body 230. According to various embodiments, the connecting portion 235 may further be configured to minimize or reduce light leakage (i.e. along the connecting portion 235 itself). For example, as shown in FIG. 2B, the light-reflecting layer 250 may also be disposed over and / or on (e g. directly on) one or more surface(s) of the connecting portion 235.[000106] With reference to FIG. 2A and FIG. 2B, according to various embodiments, the connecting portion 235 may be extending or oriented in a non-parallel manner relative to the primary light-output portion 233 (or to the plane on which the primary light-output portion 233 may be) and / or to the auxiliary light-output portion 234 (or to the plane on which the auxiliary light-output portion 234 may be). Specifically, as shown in FIG. 2A and FIG. 2B, according to various embodiments, the connecting portion 235 may be elongated in shape and may be oriented perpendicularly (e g. substantially perpendicularly) to the primary light-output portion 233 (or to the plane on which the primary light-output portion 233 may be) and / or to the auxiliary lightoutput portion 234 (or to the plane on which the auxiliary light-output portion 234 may be). In other words, a longitudinal axis of the connecting portion 235 may be perpendicularly (e g. substantially perpendicularly) to the primary light-output portion 233 (or to the plane on which the primary light-output portion 233 may be) and / or to the auxiliary light-output portion 234 (or to the plane on which the auxiliary light-output portion 234 may be).[000107] Referring to FIG. 2B, according to various embodiments, the lighttransmission body 230 may include a first secondary (or further) light-directing surface 238C (e.g. at the panel structure 238 of the light-transmission body 230) configured tochannel or direct (e.g. internally reflect) light (i.e. that enters the light-input face 231) to the connecting portion 235, and may further include a further secondary (or another) light-directing surface 235C configured to channel or direct (e.g. internally reflect) light from the connecting portion 235 to the auxiliary light-output portion 234 of the lighttransmission body 230.[000108] According to various embodiments, as shown in FIG. 2B, the first secondary light-directing surface 238C may be non-parallel (e.g. inclined) relative to the light-input face 231. In particular, according to various embodiments, the first secondary light-directing surface 238C may form an internal acute angle with respect to the light-input face 231. As shown in FIG. 2B, according to various embodiments, the first secondary light-directing surface 238C may include or may be a surface of the panel structure 238 of the light-transmission body 230. Specifically, as shown, according to various embodiments, the first secondary light-directing surface 238C may include or may be a side surface (e.g. outer side surface or outer face) of the panel structure 238, with an inner side of this surface serving as the first secondary lightdirecting surface 238C (e.g. configured to internally reflect / redirect light that hits it). Furthermore, the first secondary light-directing surface 238C may form an internal obtuse angle with respect to the second surface (e g rear surface) 238B of the panel structure 238. As an illustration, as shown in FIG. 2B, according to various embodiments, the first secondary light-directing surface 238C may be, but is not limited to being, adjoined to an edge of the second surface (e.g. rear surface) 238B of the panel structure 238 of the light-transmission body 230.[000109] With reference to FIG. 2B, according to various embodiments, the aforementioned first secondary light-directing surface 238C may be situated proximal (e.g. near) or at a first end (e.g. first longitudinal end) of the connecting portion 235.[000110] On the other hand, according to various embodiments, with reference to FIG. 2B, the further secondary light-directing surface 235C may be situated proximal (e.g. near) or at an opposite, second end (e.g. second longitudinal end) of the connecting portion 235. In particular, according to various embodiments, as shown in FIG. 2B, the further secondary light-directing surface 235C may be aligned with (e.g. situated substantially or directly opposite) the first secondary light-directing surface 238C (e.g. along the longitudinal axis of the elongate-shaped connecting portion 235)|0001111 According to various embodiments, as shown in FIG. 2B, the further secondary light-directing surface 235C may be non-parallel (e.g. inclined) relative to the auxiliary light-output portion 234 (or to the plane on which the auxiliary light-output portion 234 may be). In particular, according to various embodiments, the further secondary light-directing surface 235C may form an internal obtuse angle with respect to the auxiliary light-output portion 234 (or to the plane on which the auxiliary lightoutput portion 234 may be). As shown in FIG. 2B, as an illustration, the further secondary light-directing surface 235C may be a surface of the connecting portion 235 (e.g. at its second longitudinal end or end region).[000112] According to various embodiments, the first secondary light-directing surface 238C and the further secondary light-directing surface 235C may be symmetrically disposed about a central axis (e.g. a reference axis) (not shown) of the connecting portion 235 which may be extending across and perpendicularly to the connecting portion 235 (or perpendicularly to the longitudinal axis of the connecting portion 235). In particular, each of the first secondary light-directing surface 238C and the further secondary light-directing surface 235C may form equal (e.g. substantially) equal internal acute angles with respect to such a central axis of the connecting portion 235.[000113] According to various embodiments, the first secondary light-directing surface 238C and the further secondary light-directing surface 235C may be equal (e.g. substantially equal) in size. Nevertheless, it is also envisaged that, in various other embodiments, they may have differing dimensions (e.g. such that the further secondary light-directing surface 235C may be larger in size than the first secondary lightdirecting surface 238C, or vice versa).[000114] Accordingly, with the above arrangement, according to various embodiments, at least some of the light (i.e. emitted by the set of light source(s) 261) that enters the light-transmission body 230 (i.e. through the light-input face 231) may be channeled by (or transmitted along) the light-transmission body 230, from the lightinput face 231 to the first secondary light-directing surface 238C to be reflected (e.g. internally reflected) by the first secondary light-directing surface 238C to (or into) the connecting portion 235 of the light-transmission body 230. Subsequently, the light may be channeled by (or transmitted along) the connecting portion 235 to the further secondary light-directing surface 235C to be reflected (e.g. internally reflected) by thefurther secondary light-directing surface 235C to (or into) the auxiliary light-output portion 234 of the light-transmission body 230. As an example, shown in FIG. 2B, the light-reflecting layer 250 may be disposed over and / or on (e.g. directly on) the first secondary light-directing surface 238C. However, it is also envisaged that, in various other embodiments (not shown), the light-reflecting layer 250 may also be disposed over and / or on (e.g. directly on) the further secondary light-directing surface 235C.[000115] In particular, with reference to FIG. 2A and FIG. 2B, according to various embodiments, at least one light source from among the set of light sources 261 within the hole 241 at the panel structure 238 of the light-transmission body 230 may be configured to emit light into a portion of the light-input face 231 which may be aligned with and / or which faces the aforementioned first secondary light-directing surface 238C. According to various embodiments, this light source may be configured to or assigned or designated for illuminating the auxiliary light-output portion 234.[000116] According to various embodiments, at least one other remaining light source from among the set of light sources 261 within the hole 241 at the panel structure 238 of the light-transmission body 230 may be configured to emit light into another portion of the light-input face 231 which may be aligned with and / or which faces the light-directing portion opposite the primary light-output portion 233 of the panel structure 238 of the light-transmission body 230. According to various embodiments, this other light source may be configured to or assigned or designated for illuminating the primary light-output portion 233.[000117] Thus, according to various embodiments, each set of light source(s) 261 of the display device 200 (e.g. within each hole 241 of the light-transmission body 230) may include at least two light sources configured to emit light in different and / or opposite (e g. substantially opposite) directions from each other. It is also envisaged that, in various other embodiments, each set of light source(s) 261 may include at least one light source, or may be a single (e.g. only a single) light source, which may be configured to emit light in different and / or opposite (e.g. substantially opposite) directions.[000118] According to various embodiments, the entire light-transmission body 230 may be a single, integral and / or continuous body.[000119] According to various other embodiments, the light-transmission body 230 may be composed of discrete and / or individual (or separate) pieces. For example,according to various other embodiments, the primary light-output portion 233 (e g. the panel structure 238) may be a discrete piece from the connecting portion 235 and the auxiliary light-output portion 234. As another example, according to various other embodiments, the connecting portion 235 may be a discrete piece from the auxiliary light-output portion 234. According to various embodiments, any two neighboring discrete pieces of the light-transmission body 230 may be optically coupled (e g. directly engaged, abutting, and / or interfacing) to minimize optical losses and ensure optimal light transmission therebetween.[000120] It is also envisaged that, in various other embodiments, at least two parts or portions or pieces of the light-transmission body 230 may be integral or integrally formed. For instance, in various other embodiments, the connecting portion 235 and the auxiliary light-output portion 234 may be integral or integrally formed, while being discrete from the primary light-output portion 233 (e g. the panel structure 238).[000121] According to various embodiments, the entire light-transmission body 230 may be rigid or substantially rigid. In particular, according to various embodiments, the light-transmission body 230 may be configured such that any two parts or portions or pieces of the light-transmission body 230 may be immovable relative to one another. Accordingly, each of the primary light-output portion 233, the connecting portion 235, and the auxiliary light-output portion 234 may be immovable relative to a remaining one from among (or a remainder of) the primary light-output portion 233, the connecting portion 235, and the auxiliary light-output portion 234.[000122] FIG. 2C shows a close-up view of the second surface 238B of the panel structure 238 of the light-transmission body 230, serving as the light-directing portion of the light-transmission body 230, of the display device 200 of FIG. 2A, according to various embodiments.[000123] Referring to FIG. 2C, according to various embodiments, the second surface 238B of the panel structure 238, i.e. serving as the light-directing portion of the light-transmission body 230, may (e.g. optionally) be a textured surface. For instance, the second surface 238B may include an arrangement of texture formations 237 forming the textured surface.[000124] As an illustration, according to various embodiments, each texture formation 237 may be a groove, indentation, or depression, etc., that may be recessed into the light-transmission body 230 (e g. into the panel structure 238). As such,according to various embodiments, an inner face of the second surface 238B of the panel structure 238 may be rough or uneven. In other words, according to various embodiments, the second surface 238B of the panel structure 238 may be textured with a plurality of recessed formations (e g. etched, laser-etched, or micro-etched, patterns or formations) to create an internal side (or internal surface) with an uneven or rugged texture.[000125] According to various embodiments, the textured surface of the second surface 238B of the panel structure 238 may facilitate diffusion or scattering of the light which enters the light-transmission body 230 and strikes this textured surface. Accordingly, according to various embodiments, this textured surface of the panel structure 238 of the light-transmission body 230 may serve a dual function as a lightdirecting surface as well as a light-diffusion surface.[000126J According to various embodiments, as an illustration, the texture formations 237 may have symmetrical shapes, such as concave and / or dimple shapes, conical shapes, hemisphere or hemispherical shapes, pyramid shapes, cuboid shapes, or cubic shapes, etc.[000127] According to various other embodiments, the texture formations 237 may have asymmetrical or irregular shapes.[000128] According to various embodiments, the texture formations 237 may be uniformly shaped and / or sized. In other words, according to various embodiments, all of the texture formations 237 on the second surface 238B may have a same shape and / or size.[000129] According to various embodiments, the texture formations 237 may be arranged in an orderly pattern (e.g. uniform and / or orderly array pattern). According to various embodiments, the orderly pattern may include equally spaced apart texture formations 237. As some examples, according to various embodiments, the texture formations 237 may be arranged in a repeating honeycomb pattern, a repeating grid pattern, or any other suitable orderly pattern.[000130] According to various other embodiments, the texture formations 237 may be arranged in an irregular (or non-uniform) pattern. According to various embodiments, the irregular pattern may include texture formations 237 spaced apart at different distances to form a random pattern, or a pattern with a series of texture formations 237 arranged with increasing or decreasing distances apart. For instance,according to various embodiments, a first (or at least one) pair of neighboring (e.g. immediately adjacent) texture formations 237 which are proximal (or nearer) to a respective light source (or the set of light source(s) 261) may be spaced apart from each other by a first distance, while a second (or at least one other) pair of neighboring texture formations 237 which are distal (or further) from said respective light source (or the set of light source(s) 261) may be spaced apart from each other by a second distance which may be smaller than the first distance. In particular, according to various embodiments, at least a subset of the texture formations 237 may be arranged with decreasing distances apart from a peripheral edge region of the second surface 238B to a central region of the second surface 238B, which may be surrounded by the peripheral edge region thereof[000131] Furthermore, according to various embodiments, at least one texture formation 237 located proximally (or near) to a respective light source (or the set of light source(s) 261 within the hole 241, shown in FIG. 2A and FIG. 2B) may be smaller in size than another texture formation 237 located distally (or further) from said respective light source (or the set of light source(s) 261). In particular, according to various embodiments, a texture formation 237 at the peripheral edge region of the second surface 238B may be smaller than another texture formation 237 at the central region of the second surface 238B. As an example, according to various embodiments, the texture formations 237 of the second surface 238B may be sized with increasing sizes from the peripheral edge region of the second surface 238B to the central region of the second surface 238B.[000132] FIG. 2D shows an isolated, cross-sectional side view of the panel structure 238 of the light-transmission body 230 of the display device 200 of FIG. 2A, with the set of light source(s) 261 and a set of auxiliary light source(s) 262, according to various embodiments.[000133] According to various embodiments, the light-transmission body 230 (e g. the panel structure 238) may include at least two light -input faces, such as the lightinput face (i.e. a first light-input face) 231 and an auxiliary light-input face (i.e. a second light-input face) 232. According to various embodiments, with reference to FIG. 2D, the light-input face 231 may be located at or within a first region (e.g. a right side region) of the light-transmission body 230 (e.g. of the panel structure 238), while the auxiliary light-input face 232 may be located at or within a second region (e.g. a leftside region) of the light-transmission body 230 (e.g. of the panel structure 238). In particular, according to various embodiments, the light-input face 231 and the auxiliary light-input face 232 may be aligned (e.g. substantially aligned) and / or opposite (e.g. substantially opposite) each other.[000134] According to various embodiments, the display device 200 may include at least two sets of light source(s) 261 , 262, with each set of light source(s) 261 , 262 associated with a respective light -input face 231, 232. In particular, according to various embodiments, the display device 200 may include the aforementioned set of light source(s) (i.e. a first set of light source(s)) 261 and a set of auxiliary light source(s) (i.e. another, second set of light source(s)) 262.[000135] To illustrate, with reference to FIG. 2D, according to various embodiments, the light-transmission body 230 (e.g. the panel structure 238) may include at least two holes. As shown, the first hole 241 may be at or within the first region (e.g. the right side region) of the light-transmission body 230 (e.g. the panel structure 238), while a second hole 242 may be at or within the second region (e.g. the left side region) of the light-transmission body 230 (e.g. the panel structure 238). According to various embodiments, the inner surface of the light-transmission body 230 (e.g. the panel structure 238) defining the first hole 241 may serve as or may be the aforementioned light-input face 231, while the inner surface of the light-transmission body 230 (e.g. the panel structure 238) defining the second hole 242 may serve as or may be the auxiliary light-input face 232.[000136] According to various embodiments, the aforementioned set of light source(s) 261 (i.e. first set of light source(s)) may be disposed within the first hole 241 such that it may be capable of emitting light into the light-transmission body 230 through the inner surface (i.e. light-input face 231) of the first hole 241, while the set of auxiliary light source(s) 262 (i.e. second set of light source(s)) may be disposed within the second hole 242 such that it may be capable of emitting light into the lighttransmission body 230 through the inner surface (i.e. auxiliary light-input face 232) of the second hole 242. Accordingly, according to various embodiments, the first set of light source(s) 261 and the set of auxiliary light source(s) 262 may be aligned (e.g. substantially aligned) and / or positioned opposite (e.g. substantially opposite) each other. In particular, according to various embodiments, the first set of light source(s) 261 and the set of auxiliary light source(s) 262 may be positioned or may lie along asame plane (e.g. a reference plane, which may be extending along and / or may be parallel to the panel structure 238).[000137] According to various embodiments, the first set of light source(s) 261 and the set of auxiliary light source(s) 262 may all be disposed onto (e.g. electrically coupled or connected) to a same (e.g. a single) circuit board 263. In particular, the first set of light source(s) 261 and the set of auxiliary light source(s) 262 may be disposed or connected to a same side or surface (e.g. forward-facing side or surface) of the circuit board 263. Furthermore, the circuit board 263 (e.g. the entire circuit board 263) may lie on a plane (e.g. a planar or flat, or substantially planar or flat, reference plane) which may be parallel to the first panel 210 and / or the second panel 220 (shown in FIG. 2A and FIG. 2B) of the display device 200. It is also envisaged that, in various other embodiments, the first set of light source(s) 261 and the set of auxiliary light source(s) 262 may be disposed or connected (e.g. respectively disposed or connected) to multiple, discrete circuit boards which may all lie on a same plane (e.g. a planar or flat, or substantially planar or flat, reference plane) which may be parallel to the first panel 210 and / or the second panel 220. According to various embodiments, the circuit board 263 (or circuit board(s)) may also be, but is not limited to being, engaged and / or interfaced with the light-transmission body 230, for example, with at least a segment of the second surface 238B of the panel structure 238 of the light-transmission body 230. As some examples, according to various embodiments, the circuit board 263 may include or may be a PCB, a flexible circuit board or flexible PCB, a rigid circuit board or rigid PCB, a metal core circuit board or metal core PCB, etc.[000138] According to various embodiments, the primary light-output portion 233 may be between (e.g. extending between and / or along) the first region (e.g. right side region) and the second region (e g. left side region) of the light -transmission body 230 (e.g. the panel structure 238 of the light-transmission body 230). Hence, according to various embodiments, the light-input face 231 (e g. including the first set of light source(s) 261) may be proximal a first end of the primary light-output portion 233, while the auxiliary light-input face 232 (e.g. including the set of auxiliary light source(s) 262) may be proximal an opposite, second end of the primary light-output portion 233. In other words, according to various embodiments, the primary light-output portion 233 may be (e.g. may at least be) at a central region of the light-transmission body 230 (e g. the panel structure 238), while the light-input face 231 and the auxiliary light-input face232 may be at a peripheral edge region of the light-transmission body 230 (e.g. the panel structure 238) which surrounds the central region of the light-transmission body 230.[000139] In particular, as shown in FIG 2D, according to various embodiments, the primary light-output portion 233 may include or may be the first planar surface 238A of the panel structure 238 of the light-transmission body 230 which may be over and / or extending between (e.g. at least between) the light-input face 231 and the auxiliary light-input face 232 (e.g. at least between a first hole axis of the first hole 241 and a second hole axis of the second hole 242). In particular, the primary light-output portion233 may be extending lengthwise of the panel structure 238, while each of the lightinput face 231 and the auxiliary light-input face 232 may be extending thickness-wise of the panel structure 238. As shown, according to various embodiments, the primary light-output portion 233 (e.g. first planar surface 238A) may be non-parallel (e g. perpendicular or substantially perpendicular) to each of the light-input face 231 and the auxiliary light-input face 232. Furthermore, as shown, the primary light-output portion 233 may be larger (e.g. at least longer in length, and / or have a larger surface area) than each of the light-input face 231 and the auxiliary light-input face 232. Thus, according to various embodiments, the primary light-output portion 233 may correspond to a main face or main surface of the panel structure 238 of the light-transmission body 230.[000140] According to various embodiments, with reference to FIG. 2D, the lightdirecting portion (e.g. the second surface 238B of the panel structure 238) opposite the primary light-output portion 233 (e.g. the first planar surface 238A of the panel structure 238) may be configured in a manner to prevent or minimize optical cross-talk between the set of light source(s) 261 and the set of auxiliary light source(s) 262.[000141] In particular, as shown, the light-directing portion may include at least a first segment at the first region of the light-transmission body 230 and a second segment at the second region of the light-transmission body 230, which may be configured to prevent or minimize optical cross-talk betw een the set of light source(s) 261 and the set of auxiliary light source(s) 262.[000142] According to various embodiments, the first segment and the second segment may be, but are not limited to being, symmetrically disposed or arranged relative to each other (e.g. about a central axis of the light-transmission body 230). Furthermore, according to various embodiments, the first segment and the secondsegment may be, but are not limited to being, identical in shape and / or size to each other.[000143] As an illustration, according to various embodiments, the first segment of the light-directing portion may be a first planar or curved segment of the light-directing portion (e.g. the second surface 238B of the panel structure 238) which may be nonparallel or inclined relative to the light-input face 231 and the primary light-output portion 233 of the light-transmission body 230 (e.g. the panel structure 238). In particular, according to various embodiments, the first segment of the light-directing portion (e.g. the second surface 238B of the panel structure 238) may form an internal acute angle with respect to the light-input face 231 as well as form an internal acute angle with respect to the primary light-output portion 233 Moreover, the first segment of the light-directing portion may be, but is not limited to being, adjoined to the lightinput face 231. For instance, the first segment of the light-directing portion may be adjoined to an edge of the light-input face 231 at an opening or entrance to the first hole 241. Thus, according to various embodiments, the first segment of the light-directing portion may be configured to channel or direct light (i.e. that enters the lighttransmission body 230 through the light-input face 231) to the primary light-output portion 233 (e.g. to at least a first segment of the primary light-output portion 233 within the first region of the light-transmission body 230).[000144] Similarly, according to various embodiments, the second segment of the light-directing portion may be a second planar or curved segment of the light-directing portion (e.g. the second surface 238B of the panel structure 238) which may be nonparallel or inclined relative to the auxiliary light-input face 232 and the primary lightoutput portion 233 of the light-transmission body 230 (e.g. the panel structure 238). In particular, according to various embodiments, the second segment of the light-directing portion (e.g. the second surface 238B of the panel structure 238) may form an internal acute angle with respect to the auxiliary light-input face 232 as well as form an internal acute angle with respect to the primary light-output portion 233. Moreover, the second segment of the light-directing portion may be, but is not limited to being, adjoined to the auxiliary light-input face 232. For instance, the second segment of the lightdirecting portion may be adjoined to an edge of the auxiliary light-input face 232 at an opening or entrance to the second hole 242. Thus, according to various embodiments, the second segment of the light-directing portion may be configured to channel or directlight (i.e. that enters the light-transmission body 230 through the auxiliary light-input face 232) to the primary light-output portion 233 (e.g. to at least a second segment of the primary light-output portion 233 within the second region of the light-transmission body 230).[000145] According to various embodiments, the first segment and the second segment may of the light-directing portion be adjacent and / or opposite (e g. substantially opposite) each other. Furthermore, according to various embodiments, the first segment of the light-directing portion may be adjoined at an edge or point thereof (e.g. opposite the light-input face 231) to a corresponding edge or point of the second segment of the light-directing portion (e g. opposite the auxiliary light-input face 232). In particular, according to various embodiments, the first segment and the second segment of the light-directing portion may form an internal reflex angle (i.e. measuring more than 180°) relative to each other (e.g. where they may be adjoined to one another). As some examples, according to various embodiments, the light-directing portion (e g. including the aforesaid first segment and second segment thereof) may include or may be at least a region of the second surface 238B of the panel structure 238 which may be shaped as a concaved or recessed cone, dome (e.g. curved dome), pyramid (e.g. multi-faced pyramid), frustum (e.g. conical frustum), etc.[000146] Referring back to FIG. 2A, according to various embodiments, the various components of the display device 200 may be immovably held or supported by (or within) the housing 201 of the display device 200. As shown, according to various embodiments, the housing 201 may define an opening at its front side for accommodating the first panel 210. Further, within the housing 201, the auxiliary lightoutput portion 234 of the light-transmission body 230 may be rearward of the first panel 210. The second panel 220 may be rearwards of the auxiliary light-output portion 234 of the light-transmission body 230. The primary light-output portion 233 (e.g. of the panel structure 238) of the light-transmission body 230 may be rearwards of the second panel 220. The connecting portion 235 of the light-transmission body 230 may be situated within a side region of the housing 201, and may be adjacent to the second panel 220 (e.g. an edge of the second panel 220). The light-reflecting layer 250 may be rearwards of the panel structure 238. Accordingly, according to various embodiments, the second panel 220 may also correspond to a “middle” or intervening component between the first panel 210 and the light-reflecting layer 250 (e.g. when the displaydevice 200 includes the light-reflecting layer 250). Further, the light source(s) 261 (and the light source(s) 262, shown in FIG. 2D) may be between the light-reflecting layer 250 and the panel structure 238 of the light-transmission body 230.[000147] FIG. 3 A shows a perspective view of a display device 300 in the form of a circular-shaped infinity mirror, according to various embodiments.[000148] According to various embodiments, there may be provided the display device 300.[000149] According to various embodiments, the display device 300 may contain any one or more or all the features and / or limitations of the display device 100 of FIG. 1A and FIG. IB and / or the display device 200 of FIG. 2A and FIG. 2B. In the following, the display device 300 is described with like reference characters generally referring to the same or corresponding parts / features of the display device 100 of FIG. 1 A and FIG. IB and / or the display device 200 of FIG. 2A and FIG. 2B. The description of the parts / features made with respect to the display device 300 may also be applicable with respect to the display device 100 and / or the display device 200, and vice versa.[000150] As shown in FIG. 3 A, according to various embodiments, the display device 300 may be a circular-shaped display device 300. In particular, the display device 300 may include at least a circular-shaped first panel 310 (e g a two-way mirror) and a circular-shaped second panel 320 (e.g. a plane mirror) positioned rearwards of the first panel 310. Further, the first panel 310 and the second panel 320 may be housed within a circular-shaped (e.g. cylindrical) housing 301 of the display device 300. However, it is also envisaged that, in various other embodiments, the display device 300 - including the first panel 310, second panel 320 as well as the housing 301 - may be configured in any other shape, such as a square shape, triangular shape, oval shape, etc.[000151] According to various embodiments, as shown in FIG. 3 A, the second panel 320 may include at least one light-transmissive region 322, which may be situated at or within a central region of the second panel 320. As shown, the at least one lighttransmission region may correspond to (e.g. may be in the shape of) a logo, symbol, picture, or image, etc. In particular, as shown, the second panel 320 may include at least two discrete (e.g. separate, spaced apart, etc.) and / or distinct light-transmissive regions 322, which may differ in shape and / or size from each other. It is also envisaged that, in various other embodiments (not shown), the second panel 320 may include at least one light-transmissive region 322 corresponding to text, character(s), word, etc.,(e.g. of any language). As such, according to various embodiments, the display device 300 may serve as a display unit as well as a volumetric notification (or warning) display system - among various other applications - capable of rendering a perception of depth and generating a three-dimension al -like picture and / or text, within a compact form factor of the display device 300.[000152] FIG. 3B shows a schematic plan view of the display device 300 of FIG 3 A, with a light-transmission body 330 having a first arrangement of texture formations 337, according to various embodiments.[000153] According to various embodiments, with reference to FIG. 3B, the display device 300 may, similar to the display device 100 of FIG. 1A and FIG. IB and / or the display device 200 of FIG. 2A and FIG. 2B, include (e.g. further include) a lighttransmission body 330. According to various embodiments, the light-transmission body 330 of the display device 300 may include a primary light-output portion 333 and an auxiliary light-output portion 334. For instance, the light-transmission body 330 may include a circular-shaped panel structure disposed rearwards of the second panel 320, with a surface of the panel structure (e.g. a front or forward-facing planar surface of the panel structure, which is opposing or directly facing the second panel 320) serving as the primary light-output portion 333 of the light-transmission body 330. On the other hand, the auxiliary light-output portion 334 may be disposed forward of the second panel 320. As an example, according to various embodiments, the auxiliary light-output portion 334 may be an annular-shaped auxiliary light-output portion 334.[000154] With reference to FIG. 3B, according to various embodiments, the lighttransmission body 330 (e g. the circular-shaped panel structure) may include a plurality of holes 340. In particular, as shown, the light-transmission body 330 (e.g. the panel structure) may include more than one pair (or set or sub -arrangement) of holes 340 (herein may be referred to as “pair of holes”, for ease of description), with each pair of holes 340 being aligned (e g. along a same planar reference plane) and / or positioned opposite (e.g. substantially or directly opposite) each other (e.g. on opposite regions / opposite side regions of the light-transmission body 330 / the panel structure). As an example, shown in FIG. 3B, the light-transmission body 330 (e g. the panel structure) may include twelve pairs of holes 340 (in other words, may include twenty-four individual holes 340 in total). According to various embodiments, an inner surface of the light-transmission body 330 (e.g. the panel structure) defining a first hole(henceforth may be referred to as “primary hole”) of each pair of holes 340 may serve as a respective light-input face (henceforth may be referred to as “primary light-input face”) of the light-transmission body 330, while an inner surface of the lighttransmission body 330 (e g. the panel structure) defining a second hole (henceforth may be referred to as “auxiliary hole”) of each pair of holes 340 may serve as a respective auxiliary light-input face of the light-transmission body 330.[000155] According to various embodiments, the display device 300 may, similar to the display device 200 of FIG. 2A and FIG. 2B, include (e.g. further include) at least one light source disposed within each respective (or individual) hole 340 of the lighttransmission body 330. In particular, the display device 300 may include a respective set of light source(s) (henceforth may be referred to as “set of primary light source(s) 361”) within each primary hole of each pair of holes 340, and may further include a respective set of auxiliary light source(s) 362 within each auxiliary hole of each pair of holes 340.[000156] According to various embodiments, all of the light sources 361, 362 of the display device 300 may be positioned rearward of the second panel 320 and may be disposed (e.g. aligned) along a same plane (e.g. a planar reference plane).[000157] According to various embodiments, all of the sets of primary light source(s) 361 and the sets of auxiliary light source(s) 362 may all be disposed onto (e.g. electrically coupled or connected) to a same (e g. a single and / or continuous) circuit board (e g. which may be similar or identical to the circuit board 163 or 263, as previously described), particularly, onto to a same side or surface (e.g. forward-facing side or surface) of the circuit board. Furthermore, the circuit board (e g. the entire circuit board) may lie on a plane (e.g. a planar or flat, or substantially planar or flat, reference plane) which may be parallel to the first panel 310 and / or the second panel 320. It is also envisaged that, in various other embodiments, the sets of primary light source(s) 361 and the sets of auxiliary light source(s) 362 may be disposed or connected (e g. respectively disposed or connected) to multiple, discrete circuit boards which may all lie on a same plane (e.g. a planar or flat, or substantially planar or flat, reference plane). For instance, in various other embodiments, all of the sets of primary light source(s) 361 may be disposed or connected to a first circuit board, while all of the sets of auxiliary light source(s) 362 may be disposed or connected to a second (e.g. discrete)circuit board, which may be electrically connected to the first circuit board (e.g. via wires, electrical connections, etc.).[000158] According to various embodiments, with reference to FIG. 3B, the lighttransmission body 330 (e.g. the panel structure) may be configured to prevent or minimize optical cross-talk between each pair of a respective set of primary light source(s) 361 and a respective set of auxiliary light source(s) 362 which may be respectively disposed within opposite (e.g. substantially or directly opposite) holes 340 of the light-transmission body 330 (e.g. the panel structure). For instance, a rear or base surface (or at least a portion or segment thereof) of the light-transmission body 330 (e.g. the panel structure) may be concaved or recessed into the light-transmission body 330 (e g. the panel structure). As an illustration, according to various embodiments, at least a portion or segment of the rear or base surface of the light-transmission body 330 (e.g. the panel structure) may be shaped as or may resemble a concaved or recessed cone, dome (e.g. curved dome), pyramid (e g. multi-faced pyramid), frustum (e g. conical frustum), etc.[000159] Additionally, according to various embodiments, with reference to FIG. 3B, the rear or base surface of the light-transmission body 330 (e.g. the panel structure) may be a textured surface For instance, said rear or base surface may include an arrangement of texture formations 337 forming the textured surface. As such, according to various embodiments, an internal or inner side or face of the rear or base surface may be rough or uneven for diffusing and / or scattering light that hits it.[000160] According to various embodiments, as shown in FIG. 3B, the texture formations 337 may be arranged in an orderly pattern. According to various embodiments, the orderly pattern may include equally spaced apart texture formations 337. That is, each neighboring (e.g. immediately adjacent) pair of texture formations 337 may be spaced apart by a same (or predetermined or fixed) distance. In other words, each texture formation 337 may be spaced from each neighboring (e.g. immediately adjacent) texture formation 337 by a same distance.[000161] Furthermore, according to various embodiments, the texture formations 337 may be identical in shape and / or size to each other.[000162] FIG. 3C shows a schematic plan view of the display device 300 of FIG. 3A, with its light-transmission body 330 having a second arrangement of texture formations 337, according to various embodiments.|000163| FIG. 3D is a close-up view of FIG. 3C, according to various embodiments. [000164] According to various embodiments, the light-transmission body 330 of the display device 300 of FIG. 3C and FIG. 3D may differ from the light-transmission body 330 of the display device 300 of FIG. 3B in that in the light-transmission body 330 of the display device 300 of FIG. 3C and FIG. 3D, the texture formations 337 of the rear or base surface of the light-transmission body 330 (e.g. the panel structure) may be spaced apart at different distances. For instance, as shown, a series of texture formations 337 may be arranged with decreasing distances apart, from a peripheral edge (or edge region) of the light-transmission body 330 (e g. the panel structure) to or towards a central region of the light-transmission body 330 (e.g. the panel structure). In other words, according to various embodiments, a first (or at least one) pair of neighboring (e.g. immediately adjacent) texture formations 337 which are proximal (or nearer) to a respective hole 340 (or a respective primary light-input face, or a respective auxiliary light-input face) of the light-transmission body 330 may be spaced apart from each other by a first distance, while a second (or at least one other) pair of neighboring texture formations 337 which are distal (or further) from the aforesaid respective hole 340 (or primary light-input face, or auxiliary light-input face) of the light-transmission body 330 may be spaced apart from each other by a second distance which may be smaller than the first distance. In other words, a sub-set of texture formations 337 further from a respective light source 361 or 362 (from FIG. 3B) may be closer to each other (in other words, may be denser) than another sub-set of texture formations 337 nearer to said respective light source 361 or 362.[000165] Additionally, according to various embodiments, the texture formations 337 may increase in size (e.g. progressively increase in size), from the peripheral edge (or edge region) of the light-transmission body 330 (e.g. the panel structure) to or towards the central region of the light-transmission body 330 (e g. the panel structure). In other words, according to various embodiments, a first (or at least one) texture formation 337 which is proximal (or nearer) to a respective hole 340 (or a primary light-input face, or an auxiliary light-input face) of the light-transmission body 330 may be smaller in size than a second (or at least one other) texture formation 337 which is distal (or further) from the aforesaid respective hole 340 (or primary light-input face, or auxiliary lightinput face) of the light-transmission body 330. Thus, according to various embodiments, a texture formation 337 further from a respective light source 361 or 362(from FIG. 3B) may be larger in size than another texture formation 337 nearer to said respective light source 361 or 362.[000166] According to various embodiments, the above configuration of the texture formations 337 may ensure a more even distribution of light to the light-transmissive region 322 of the second panel 320.[000167] According to various embodiments, the light-transmission body 330 may include a respective connecting portion (not shown in FIG. 3 A to FIG. 3D) (e.g. which may be similar or identical to the connecting portion 235, as previously described with reference to FIG. 2A and FIG. 2B) which optically couples or connects each primary light-input face (and each auxiliary light-input face) of the light-transmission body 330 to the auxiliary light-output portion 334 of the light-transmission body 330. As an example, according to various embodiments, the light-transmission body 330 may include a number of discrete (e.g. individual) connecting portions equal to a total number of primary light-input faces and auxiliary light-input faces of the lighttransmission body 330. As another example, according to various embodiments, the connecting portion may be a single, integral portion, such as an annular-shaped connecting portion.[000168] Referring back to FIG. 3A, according to various embodiments, the display device 300 may be configured to be compact-sized and / or portable. For example, according to various embodiments, the display device 300 may include a power source (not shown) (e.g. portable batteries or an internal rechargeable battery). It is also envisaged that, according to various other embodiments, the display device 300 may be powered by solar (e g. by equipping the display device 300 with a solar panel). It is also envisaged that, in various other embodiments, the display device 300 may be powered by an external power source (e g. a mains supply)[000169] As an illustration and a non-limiting example, with reference to FIG. 3A, the housing 301 of the display device 300 may have a width (e.g. average width) or a diameter (e.g. average diameter) falling within a range between 10 cm to 40 cm (e.g. 30 cm). Further, as an illustration, the annular-shaped auxiliary light-output portion 334 of the display device 300 (or an infinity mirror effect produced from light exiting the annular-shaped auxiliary light-output portion 334) may have a width (e.g. average width) or a diameter (e.g. average diameter) falling within a range between 10 cm to 40 cm (e g. 28 cm). On the other hand, the light-transmissive region 322 (e.g. logo, picture,image, or text, etc., formed by the light-transmissive region 322) (or an infinity mirror effect produced from light transmitting through the light-transmissive region 322) of the second panel 320 may have a width (e.g. average or largest width) or a diameter (e.g. average diameter) which may be smaller than that of the annular-shaped auxiliary light-output portion 334. For instance, the width or diameter of the logo, picture, image, or text, etc., formed by the light-transmissive region 322 may fall within a range between 5 cm to 35 cm (e.g. 19 cm).[0001701 Various embodiments have thus described a display device with improvements in light distribution, energy efficiency, and overall performance.[000171] Notable, the various embodiments give rise to a versatile display device, poised to advance the landscape of various sectors, including display technology, lighting systems, notification and warning systems, and beyond. In particular, the disclosed display device unlocks a vast array of applications, illuminating a way for advancements in the field.[000172] While the invention has been particularly shown and described with reference to specific embodiments, it should be understood by those skilled in the art that various changes, modification, variation in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims. The scope of the invention is thus indicated by the appended claims and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced.

Claims

CLAIMS1. A display device comprising: a first panel comprising a surface with at least one partially reflective region; a second panel comprising a surface with at least one reflective region and at least one light-transmissive region; wherein the first panel and the second panel are arranged in a parallel and spaced apart manner, wherein the surface of the first panel faces the surface of the second panel; a light-transmission body comprising: a light-input face for light to enter the light-transmission body, and a primary light-output portion for the light that enters the lighttransmission body to exit therefrom; and a light source disposed relative to the light-input face of the light-transmission body so as to be capable of emitting the light into the light-transmission body through the light-input face; wherein the second panel is between the first panel and the primary light-output portion of the light-transmission body; wherein the light-transmission body channels the light that is emitted by the light source, through the light- transmission body from the light-input face to the primary light-output portion of the light-transmission body, to cause the light to pass through the second panel, via the at least one light-transmissive region of the second panel, towards the first panel for partial reflection of the light by the at least one partially reflective region of the first panel.

2. The display device of claim 1, wherein the light-transmission body further comprises: an auxiliary light-output portion for the light that enters the light-transmission body to exit therefrom, wherein the auxiliary light-output portion is disposed along a plane between the first panel and the second panel.

3. The display device of claim 2, wherein the primary light-output portion is disposed along a further plane, the further plane being parallel to the plane between the first panel and the second panel; wherein the plane and the further plane are on opposite sides of the second panel, wherein the light-transmission body further comprises a connecting portion for the light to be transmissible therealong, wherein the connecting portion extends between the primary light-output portion and the auxiliary light-output portion, in a non-parallel manner relative to the plane and the further plane.

4. The display device of claim 2 or claim 3, wherein the auxiliary light-output portion is disposed proximal a peripheral edge region of each of the first panel and the second panel; or wherein the auxiliary light-output portion is an annular-shaped auxiliary lightoutput portion.

5. The display device of any one of claims 1 to 4, wherein the light source is positioned in an offset manner from the at least one light-transmissive region of the second panel.

6. The display device of any one of claims 1 to 5, wherein the light-transmission body further comprises: a light-directing portion opposite the primary light-output portion, wherein the light-directing portion is configured to direct light that enters the light-transmission body through the light-input face thereof to the primary light-output portion; wherein the light-directing portion is non-parallel relative to the primary lightoutput portion.

7. The display device of any one of claims 1 to 6, wherein the light-transmission body comprises a panel structure comprising a planar surface, wherein the planar surface of the panel structure faces the at least onelight-transmissive region of the second panel and serves as the primary light-output portion of the light-transmission body.

8. The display device of claim 6 or claim 7, wherein the light-directing portion comprises a textured surface.

9. The display device of claim 8, wherein the light-directing portion of the light-transmission body comprises an arrangement of texture formations forming the textured surface, wherein the texture formations are recessed into the light-transmission body.

10. The display device of claim 9, wherein the texture formations are arranged in an array pattern.

11. The display device of claim 9, wherein the texture formations are arranged in an irregular pattern.

12. The display device of claim 9, wherein a first pair of neighbouring texture formations proximal to the light source are spaced apart from each other by a first distance, wherein a second pair of neighbouring texture formations distal from the light source are spaced apart from each other by a second distance, and wherein the first distance is larger than the second distance.13 The display device of claim 9, wherein the texture formations are uniformly sized.

14. The display device of claim 9, wherein the texture formations are non-uniformly sized.

15. The display device of claim 9, wherein at least one texture formation proximal to the light source is smaller than at least one other texture formation distal from the light source.

16. The display device of any one of claims 1 to 15, further comprising: a light-reflecting layer disposed over the light-transmission body opposite the primary light-output portion thereof, wherein the light-reflecting layer faces the primary light-output portion of the light-transmission body.

17. The display device of any one of claims 1 to 16, wherein the light-input face of the light-transmission body is non-parallel to the second panel; and wherein the light source is oriented to face the light-input face of the lighttransmission body18. The display device of any one of claims 1 to 17, wherein the light-transmission body comprises at least one hole; wherein the light-input face of the light-transmission body comprises at least one inner surface of the light-transmission body which defines the at least one hole.19 The display device of any one of claims 1 to 18, wherein the light-transmission body further comprises an auxiliary light-input face opposite the light-input face; wherein the display device further comprises an auxiliary light source disposed relative to the auxiliary light-input face of the light-transmission body so as to be capable of emitting light into the light-transmission body through the auxiliary lightinput face; wherein the auxiliary light source and the light source are disposed along a same light-source-positioning plane.

20. The display device of any one of claims 1 to 18, wherein the light-input face is within a first region of the light-transmission body; wherein the light source is disposed within the first region of the lighttransmission body;wherein the light-transmission body further comprises an auxiliary light-input face opposite the light-input face, within a second region of the light-transmission body; wherein the display device further comprises an auxiliary light source disposed within the second region of the light-transmission body and relative to the auxiliary light-input face of the light-transmission body so as to be capable of emitting light into the light-transmission body through the auxiliary light-input face; wherein the primary light-output portion is between the first region and the second region; wherein the light-transmission body further comprises: a light-directing surface opposite the primary light-output portion, the light-directing surface comprising: a first segment that is inclined relative to the light -input face and the primary light-output portion to direct light that enters the lighttransmission body through the light-input face to the primary lightoutput portion, and a second segment that is inclined relative to the auxiliary lightinput face and the primary light-output portion to direct light that enters the light-transmission body through the auxiliary light-input face to the primary light-output portion.

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