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Reference will now be made in more detail to embodiments, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout the specification. In this regard, the present embodiments may have different forms and should not be construed as being limited to the descriptions set forth herein. Accordingly, the embodiments are merely described below, by referring to the figures, to explain aspects of embodiments of the present description. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. Throughout the present disclosure, the expression "at least one of a, b and c" indicates only a, only b, only c, both a and b, both a and c, both b and c, all of a, b, and c, or variations thereof.
The subject matter of the present disclosure may include various modifications and various embodiments, and example embodiments will be illustrated in the drawings and described in more detail in the detailed description. Effects and features of the subject matter of the present disclosure, and implementation methods therefor will become clear with reference to the embodiments described herein below together with the drawings. The subject matter of the present disclosure may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
Hereinafter, embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. The same or corresponding elements will be denoted by the same reference numerals, and thus, redundant description thereof will not be repeated.
It will be understood that although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.
An expression used in the singular may also encompasses the expression of the plural, unless it has a clearly different meaning in the context.
In the following embodiments, it is to be understood that the terms such as "including," "includes," "having," "comprises," and "comprising," are intended to indicate the existence of the features or elements disclosed in the specification, and are not intended to preclude the possibility that one or more other features or elements may exist or may be added.
An objective of the present disclosure is to provide a lighting device for a vehicle.
Another objective of the present disclosure is to enable seamless visual continuity across junctions between adjacent display tiles.
Yet another objective of the present disclosure is to ensure uniform brightness and pixel size across the main display.
Yet another objective of the present disclosure is to provide a modular and scalable display architecture.
Yet another objective of the present disclosure is to compensate for physical gaps between adjacent display tiles.
Yet another objective of the present disclosure is to enhance image contrast and reduce stray light leakage.
Yet another objective of the present disclosure is to improve display quality and user experience in various applications.
Yet another objective of the present disclosure is to reduce production cost while achieving high visual performance.
FIG. 1 illustrates a conventional display (100) with large gaps between a plurality of display tiles (102). The conventional display (100) includes the plurality of display tiles (102) arranged in a side-by-side configuration. Each display tile of the plurality of display tiles (102) includes a plurality of first pixels (104) organized in a matrix arrangement of rows and columns. In the conventional display (100), the plurality of display tiles (102) is positioned adjacent to each other with spacing between them. This arrangement creates visible gaps at the junctions where the plurality of display tiles (102) meet. Further, the plurality of first pixels (104) is arranged in a uniform grid pattern across each display tile of the plurality of display tiles (102), forming the basic display elements of the conventional display (100).
Further, the spacing between adjacent display tiles in the plurality of display tiles (102) results in discontinuities in the overall display surface of the conventional display (100). Furthermore, these discontinuities manifest as visible lines or gaps where the plurality of display tiles (102) join, interrupting the visual continuity of images or information displayed across the plurality of display tiles (102). Moreover, this conventional display (100) presents several limitations and drawbacks. The visible gaps between the plurality of display tiles (102) distract viewers and detract from the overall visual experience. Additionally, when displaying large images or continuous information that spans the plurality of display tiles (102), the gaps can cause noticeable breaks or distortions in the content.
The presence of the gaps between the plurality of display tiles (102) limits the seamless integration of the conventional display (100), making it challenging to create a unified large-scale display that appears as a single cohesive unit. This limitation is particularly problematic in applications requiring high visual fidelity or where the appearance of a single large display is desired.
Referring to FIG. 2, an unassembled view (200) of the plurality of display tiles is illustrated, in accordance with various embodiments of the present disclosure. The lighting device includes the plurality of display tiles (102) and one or more optical elements (110). In an implementation, one or more lighting devices is configured to be used in the vehicle. In one example, the one or more lighting devices may be a rear lamp of the vehicle. It is to be understood that the terms such as “one or more lighting devices” and “lighting device” can be used interchangeably.
In an embodiment of the present disclosure, each display tile of the plurality of display tiles (102) is arranged adjacently to each other to form a main display (112). In addition, each display tile of the plurality of display tiles (102) includes the plurality of first pixels (104) and a plurality of second pixels (108). The plurality of first pixels (104) is arranged in a matrix configuration. Each of the plurality of first pixels (104) has a first size and is configured to emit light at a first brightness. The plurality of second pixels (108) is arranged in one or more columns (106) along at least one edge of each display tile of the plurality of display tiles. In addition, each of the plurality of second pixels (108) has a second size and is configured to emit light at a second brightness. The first size is bigger than the second size, and the first brightness is lesser than the second brightness. Moreover, the one or more optical elements (110) is disposed over each of the one or more columns (106) at a junction. The junction is defined by a region between adjacent display tiles of the plurality of display tiles (102). Also, the one or more optical elements (110) is configured to magnify and deflect the plurality of second pixels (108) to match with the first size and the first brightness of the plurality of first pixels (104), thereby enabling seamless visual continuity across the junctions.
In an example embodiment, the plurality of display tiles (102) disclosed in the disclosure refers to modular display units configured to be arranged adjacently to form a larger, unified main display (112) with minimal visible seams. In general, the one or more optical elements refers to optical structures such as lenses, waveguides, optical films, or any combination thereof positioned over the second pixels (108) to magnify and redirect light, thereby visually blending pixel output across tile junctions. Generally, the plurality of first pixels (104) and a plurality of second pixels (108) refers to light-emitting pixel elements of different sizes and brightness levels. The second pixels are positioned at tile edges to compensate for visual discontinuities at junctions between adjacent tiles.
In an embodiment, the brightness of each of the plurality of second pixels (108) is configured to emit light at the second brightness that is x times the first brightness of the plurality of first pixels (104). Here, x is a ratio of the first size to the second size. In an example, the brightness of plurality of second pixels (108) is controlled to be x times higher than the plurality of first pixels (104) before magnification, where x is the ratio of the dimension of the plurality of first pixels (104) to the dimension of the plurality of second pixels (108). Further, this brightness adjustment compensates for the smaller size of the plurality of second pixels (108), allowing for a seamless visual transition between the plurality of display tiles (102) when combined with one or more optical elements (110).
In another embodiment, the one or more columns (106) and the plurality of second pixels (108) is located along edges of the display tiles that are adjacent to another display tile of the plurality of display tiles (102). In an example, the placement of the plurality of columns (106) with the plurality of second pixels (108) along the edges of the plurality of display tiles (102) enables continuous and uniform appearance across the main display (112). This configuration reduces the visibility of gaps or discontinuities between adjacent display tiles of the plurality of display tiles (102), contributing to an improved overall visual experience for viewers of the lighting device.
In yet another embodiment, each display tile of the plurality of display tile (102) corresponds to a liquid crystal display (LCD). In an example, the LCD includes a flat-panel display technology that utilizes the light-modulating properties of liquid crystals combined with a backlight or reflector to produce visible images. The LCD does not emit light directly but instead relies on an external light source to illuminate the display panel. This LCD configuration enables the plurality of display tiles (102) to render high-resolution images with low power consumption and is suitable for integration into the modular lighting device disclosed herein.
In some embodiments, one or more optical elements (110) includes an optical film configured to direct the emitted light from the plurality of second pixels (108) at an angle that compensates for a physical gap between the adjacent display tiles (102).
In another embodiment, the one or more columns (106) of the plurality of second pixels (108) is enclosed by an opaque bezel having an anti-reflective coating on an inner surface of the bezel. A bezel is configured to block stray light leakage at the junction and improve contrast uniformity between the adjacent display tiles (102). In one example, the one or more optical elements (110) may be made by a dual-shot molding process, where the one or more optical elements (110) may include a dispersive part and an opaque part. The opaque part may be configured to block stray light leakage, and the dispersive part may be configured to pass the light.
FIG. 3 illustrates an assembled view (300) of the plurality of display tiles (102), in accordance with various embodiments of the present disclosure. The lighting device may include a housing, LCDs, a control unit, a heat sink, a printed circuit board (PCB), a backlight unit (BLU), a power supply module, and a lens. The housing may be configured to house all the components. Further, the LCDs may be configured to act as a light modulator. Furthermore, the control unit may be configured to manage the pixel addressing, timing, and synchronization of the LCDs. Further, the heat sink may be configured to dissipate heat generated by the backlight and the control unit. Furthermore, a PCB may be configured to support and electrically connect the pixel matrix, driving electronics, and backlight unit. Further, the backlight unit may be configured to provide uniform illumination. Also, the power supply module may be configured to deliver regulated power to the backlight and the control unit. In an example, the lens may provide physical protection and light diffusion.
In an example embodiment, the one or more optical element (110) may include a one or more micro-structured films located on the top surface. In addition, the one or more micro-structured optical films may be in the form of a hemispheres, pyramids, or a combination thereof. Furthermore, the one or more micro-structured optical films may be thin films with a surface that has precisely patterned features such as prisms, microlenses, or a combination thereof. Further, the features may be designed to interact with light, causing it to scatter, reflect, refract, or diffract in a controlled manner. The dimensions of the features may be in a range of about 10 to 50 micrometres. Moreover, the one or more micro-structured films may be made from materials including polymers, glasses or a combination thereof. Most used materials may be PET, PMMA or PC films. In addition, the one or more micro-structured films may be made by techniques including UV imprinting, nanoimprinting, laser writing or etching, or any combination thereof.
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