Display apparatus

Abstract

This display apparatus comprises: a first light source provided to emit light for providing an image at a first viewpoint; a second light source provided to emit light for providing an image at a second viewpoint; a first lens provided to refract light emitted from the first light source toward the first viewpoint; a second lens provided to refract light emitted from the second light source toward the second viewpoint; a rear slit layer including a first rear slit provided to transmit at least a portion of the light emitted from the first light source and a second rear slit provided to transmit at least a portion of the light emitted from the second light source; and a front slit layer including a first front slit provided to transmit at least a portion of the light that has passed through the first rear slit toward the first lens and a second front slit provided to transmit at least a portion of light that has passed through the second rear slit toward the second lens.

Description

Display device

[0001] The present disclosure relates to a display device.

[0002] A display device is a type of output device that converts acquired or stored electrical information into visual information and displays it to a user, and is used in various fields such as homes and workplaces.

[0003] Display devices include monitor devices connected to personal computers or server computers, portable computer devices, navigation terminal devices, general television devices, Internet Protocol Television (IPTV) devices, portable terminal devices such as smartphones, tablet PCs, Personal Digital Assistants (PDAs), or cellular phones, various display devices used to play images such as advertisements or movies in industrial settings, or various other types of audio / video systems.

[0004] The display device includes a type that provides the same image to multiple viewpoints looking at the screen, and a multi-view display type that provides different images depending on the viewpoint.

[0005] Multi-view display devices can provide different images depending on the viewpoint by modulating light emitted from external light or an internal light source. Methods for providing different images depending on the viewpoint include holography and stereoscopy.

[0006] Holography is a method that utilizes the interference phenomenon of coherent light to provide different images depending on the viewpoint.

[0007] Stereoscopic methods are methods that provide multiple different 2D images separated by viewpoint.

[0008] Stereoscopic methods include auto-stereoscopic methods, which separate images from a display device to form a viewing area. Types of auto-stereoscopic methods include the parallax barrier method using a parallax barrier and the lenticular lens method.

[0009] The lenticular lens method is a method that provides different images at multiple viewpoints by refracting light incident from a pixel to a lenticular lens and emitting it in a desired direction.

[0010] One aspect of the present disclosure provides a display device having an improved structure to provide different images at multiple points in time.

[0011] One aspect of the present disclosure provides a display device having an improved structure to limit the width of light incident on a multi-view lens.

[0012] One aspect of the present disclosure provides a display device having an improved structure for controlling the path of light incident on a multi-view lens.

[0013] One aspect of the present disclosure provides a display device having an improved structure that can reduce noise in an image and improve image quality.

[0014] One aspect of the present disclosure provides a display device having an improved structure that can increase the number of different viewpoints formed in a viewing area.

[0015] The technical problems to be solved in this document are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art to which this invention belongs from the description below.

[0016] According to one embodiment of the present disclosure, a display device configured to provide a plurality of images different from a plurality of time points comprises: a first light source arranged to emit light for providing an image at a first time point among the plurality of time points; a second light source disposed adjacent to the first light source and arranged to emit light for providing an image at a second time point different from the first time point among the plurality of time points; a first lens arranged to refract light emitted from the first light source toward the first time point; a second lens disposed adjacent to the first lens and arranged to refract light emitted from the second light source toward the second time point; a rear slit layer comprising a first rear slit disposed between the first light source and the first lens and arranged to transmit at least a portion of the light emitted from the first light source, and a second rear slit disposed between the second light source and the second lens and arranged to transmit at least a portion of the light emitted from the second light source; and a first rear slit disposed between the first rear slit and the first lens and the first It may include a front slit layer comprising a first front slit arranged to transmit at least a portion of the light transmitted through the rear slit toward the first lens, and a second front slit disposed between the second rear slit and the second lens and arranged to transmit at least a portion of the light transmitted through the second rear slit toward the second lens. The direction from the first rear slit toward the first front slit and the direction from the second rear slit toward the second front slit may be different from each other.

[0017] According to one embodiment of the present disclosure, a display device may include a light source array arranged to emit light for providing different images at a plurality of viewpoints, a multi-view lens arranged adjacently to the light source array in a first direction, and a slit layer arranged between the light source array and the multi-view lens and arranged to block a portion of the light emitted from the light source array. The light source array may include a first light source arranged to emit light for providing an image at a first viewpoint among the plurality of viewpoints, and a second light source arranged adjacently to the first light source in a second direction different from the first direction and arranged to emit light for providing an image at a second viewpoint different from the first viewpoint among the plurality of viewpoints. The multi-view lens may include a first lens arranged adjacent to the first light source in the first direction and configured to refract light emitted from the first light source toward the first viewpoint, and a second lens arranged adjacent to the second light source in the first direction and adjacent to the first lens in the second direction and configured to refract light emitted from the second light source toward the second viewpoint. The slit layer may include a first slit arranged to transmit a portion of the light emitted from the first light source toward the first lens, and a second slit arranged to transmit a portion of the light emitted from the second light source toward the second lens. The direction in which the first slit extends between the first light source and the first lens may be different from the direction in which the second slit extends between the second light source and the second lens.

[0018] According to one embodiment of the present disclosure, a display device may include a light source array, a multi-view lens disposed adjacent to the light source array in a first direction, a rear slit layer disposed adjacent to the light source array in the first direction between the light source array and the multi-view lens, and a front slit layer disposed adjacent to the rear slit layer in the first direction between the rear slit layer and the multi-view lens. The light source array may include a plurality of light sources arranged in a second direction different from the first direction, which are arranged to emit light for providing different images at a plurality of viewpoints. The multi-view lens may include a plurality of lenses arranged in the second direction, which are arranged to refract light emitted from the plurality of light sources toward a corresponding viewpoint among the plurality of viewpoints. The rear slit layer may include a plurality of rear slits arranged to transmit at least a portion of the light emitted from the plurality of light sources. The front slit layer may include a plurality of front slits arranged to transmit at least a portion of the light emitted from the plurality of light sources and transmitted through the plurality of rear slits toward a corresponding lens among the plurality of lenses. A slit centerline connecting the center of at least some of the rear slits among the plurality of rear slits and the center of at least some of the front slits corresponding to at least some of the rear slits among the plurality of front slits may be inclined with respect to the first direction.

[0019] FIG. 1 is a perspective view of a display device according to one embodiment of the present disclosure.

[0020] FIG. 2 is a drawing illustrating an image being provided from a display device according to one embodiment of the present disclosure at a plurality of viewpoints.

[0021] FIG. 3 is an exploded perspective view illustrating the exploded configurations of a display device according to one embodiment of the present disclosure.

[0022] FIG. 4 is a drawing illustrating a light source array of a display device and light sources included therein according to one embodiment of the present disclosure.

[0023] FIG. 5 is an exploded perspective view illustrating a light source array, a slit layer, and a multi-view lens of a display device according to one embodiment of the present disclosure.

[0024] FIG. 6 is a cross-sectional view illustrating a light source array, a slit layer, and a multi-view lens of a display device according to one embodiment of the present disclosure.

[0025] FIG. 7 is a cross-sectional view illustrating a light source of a display device according to one embodiment of the present disclosure.

[0026] FIG. 8 is a cross-sectional view illustrating a light source array, a slit layer, and a multi-view lens of a display device according to one embodiment of the present disclosure.

[0027] FIG. 9 is an enlarged cross-sectional view illustrating a portion of a light source array, a slit layer, and a multi-view lens of a display device according to one embodiment of the present disclosure.

[0028] FIG. 10 is an enlarged view of the light source array and multi-view lens of a display device according to a comparative embodiment.

[0029] FIG. 11 is a cross-sectional view illustrating a light source array, a slit layer, and a multi-view lens of a display device according to one embodiment of the present disclosure.

[0030] FIG. 12 is a cross-sectional view illustrating a light source array, a slit layer, and a multi-view lens of a display device according to one embodiment of the present disclosure.

[0031] The embodiments described in this specification and the configurations illustrated in the drawings are merely preferred examples of the disclosed invention, and various modifications that may replace the embodiments and drawings of this specification may exist at the time of filing this application.

[0032] Additionally, the same reference numerals or symbols presented in each drawing of this specification represent parts or components that perform substantially the same function.

[0033] Furthermore, the terms used in this specification are for describing embodiments and are not intended to limit or / or restrict the disclosed invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and do not preclude the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0034] Additionally, terms including ordinal numbers, such as "first," "second," etc., used herein may be used to describe various components, but said components are not limited by said terms, and said terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and / or" includes a combination of a plurality of related described items or any one of a plurality of related described items.

[0035] The terms 'part, module, component, block' as used in the specification may be implemented in software or hardware, and depending on the embodiments, a plurality of 'parts, modules, components, blocks' may be implemented as a single component, or a single 'part, module, component, block' may include a plurality of components.

[0036] Various embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0037] In describing various embodiments of the present disclosure with reference to FIGS. 1 to 12, terms used in the following description, such as "front-back direction," "vertical direction," and "horizontal direction (left-right direction)," are defined based on the drawings, and the shape and position of each component are not limited by these terms. For example, the term "front-back direction" below may mean a direction parallel to the Z direction based on the drawings. For example, "vertical direction (up-down direction)" may mean a direction parallel to the Y direction based on the drawings. For example, the term "horizontal direction (left-right direction)" below may each mean a direction parallel to the X direction based on the drawings.

[0038] FIG. 1 is a perspective view of a display device according to one embodiment of the present disclosure.

[0039] Referring to FIG. 1, a display device (1) according to various embodiments of the present disclosure is a device capable of processing an image signal received from the outside and visually displaying the processed image.

[0040] For example, a display device (1) according to various embodiments of the present disclosure may include various types of display devices, such as a television (TV), a monitor which is a type of output device for a computer, a portable multimedia device, or a portable communication device. For example, a display device (1) according to various embodiments of the present disclosure may include a large format display (LFD) installed outdoors, such as on a rooftop or at a bus stop. Here, the outdoor area is not necessarily limited to an open space, but may include various indoor locations where many people can enter and exit, such as subway stations, shopping malls, movie theaters, companies, and shops. As long as the display device (1) according to various embodiments of the present disclosure is a device that visually displays images, its type is not limited to what has been described above.

[0041] For example, the display device (1) can be installed in a standing manner on a floor surface or furniture indoors or outdoors. For example, the display device (1) can be installed on a wall surface or inside a wall of a building or other structure. For example, the display device (1) can be installed on a wall by a wall mount device.

[0042] In FIG. 1, the display device (1) is described as a flat display device with a flat screen, but is not limited thereto. The display device (1) according to various embodiments of the present disclosure may include a curved display device or a variable (bendable or flexible) display device capable of varying between a flat state and a curved state. The configuration of the present disclosure described below can be applied to display devices of various shapes regardless of the screen size or aspect ratio of the display device.

[0043] The display device (1) receives content including video signals and audio signals from various content sources and can output video and audio corresponding to the video signals and audio signals. For example, the display device (1) can receive content data through a broadcast receiving antenna or a wired cable, receive content data from a content playback device, or receive content data from a content provider's content provision server.

[0044] The display device (1) can display an image corresponding to video data and output sound corresponding to audio data. For example, the display device (1) can restore multiple image frames included in the video data and continuously display multiple image frames. In addition, the display device (1) can restore an audio signal included in the audio data and continuously output sound according to the audio signal.

[0045] A display device (1) may include a screen (S) configured to display an image. The screen (S) may be provided on one side of the display device (1). The side where the screen (S) is provided may be defined as the front side of the display device (1). The screen (S) may be provided on the front of the display device (1). The screen (S) may be configured to display an image forward. For example, the screen (S) may display a still image or a video image. For example, the screen (S) may display a two-dimensional planar image or a three-dimensional stereoscopic image.

[0046] Multiple pixels (P) may be formed on the screen (S). An image displayed on the screen (S) may be formed by light emitted by each of the multiple pixels (P). For example, an image may be formed on the screen (S) by combining the light emitted by the multiple pixels (P) as if in a mosaic.

[0047] Each of the plurality of pixels (P) can emit light of various brightness and various colors. Specifically, each of the plurality of pixels (P) is a subpixel (P R , P G , P B It may include ) and subpixels (P R , P G , P B ) is a red subpixel (P) capable of emitting red light. R ), a green subpixel (P) capable of emitting green light G ) and blue subpixels (P) capable of emitting blue light B It may include ). For example, red light may represent light with wavelengths from approximately 620 nm (nanometer, one billionth of a meter) to 750 nm, green light may represent light with wavelengths from approximately 495 nm to 570 nm, and blue light may represent light with wavelengths from approximately 450 nm to 495 nm.

[0048] Red subpixel (P R ), green subpixel (P G ) and blue subpixel (P B Each of the multiple pixels (P) can emit light of various brightness and various colors through a combination of light emitted from each of the pixels.

[0049] For example, the screen (S) of the display device (1) may have a roughly rectangular shape. The screen (S) may have a first side (s1) and a second side (s2). The screen (S) may have a rectangular shape having a pair of first sides (s1) and a pair of second sides (s2) that are parallel to each other.

[0050] For example, the first side (s1) of the screen (S) may be a side parallel to the horizontal direction (X), and the second side (s2) of the screen (S) may be a side parallel to the vertical direction (Y). For example, the first side (s1) of the screen (S) may be a long side, and the second side (s2) of the screen (S) may be a short side. As illustrated in FIG. 1, the screen (S) may have a long side parallel to the horizontal direction (X) (e.g., the first side (s1)) and a short side parallel to the vertical direction (Y) (e.g., the second side (s2)), but is not limited thereto, and the screen (S) of the display device (1) according to various embodiments of the present disclosure may have a long side parallel to the vertical direction (Y) and a short side parallel to the horizontal direction (X). Alternatively, the screen (S) of the display device (1) according to various embodiments of the present disclosure may be provided in a square shape in which the lengths of the first side (s1) and the second side (s2) are nearly equal. Alternatively, the screen (S) of the display device (1) according to various embodiments of the present disclosure may have various shapes other than a rectangular shape, such as various types of polygons or circles.

[0051] FIG. 2 is a drawing illustrating an image being provided from a display device according to one embodiment of the present disclosure at a plurality of viewpoints.

[0052] Referring to FIG. 2, a display device (1) according to one embodiment of the present disclosure may be configured to provide different images at viewpoints (V) looking at a screen (S). The display device (1) may be configured to display different images depending on the viewpoint through the screen (S). The display device (1) may use an auto-stereoscopy method that provides different images depending on the viewpoint by separating a plurality of different images and displaying them on the screen (S).

[0053] A display device (1) may be configured to provide different images at multiple viewpoints (V). A viewpoint (V) is formed in an area (hereinafter referred to as a 'viewing area') located at a certain distance (d) forward (Z) from a screen (S), and may be defined as a point for a viewer to view an image displayed on the screen (S). The viewing area may be divided into multiple viewpoints, and multiple viewpoints (V) may be arranged on the viewing area. In various embodiments, multiple viewpoints (V) may be arranged in one direction along the viewing area. In various embodiments, multiple viewpoints (V) may be arranged in a two-dimensional matrix form.

[0054] In the following description, the front of the screen (S) displaying the image is defined as the "first direction (Z)," and the direction in which a plurality of viewpoints (V) are arranged is defined as the "second direction (X)." The first direction (Z) may be parallel to the direction in which the light source array (20), described later, emits light. The second direction (X) may be different from the first direction (Z). For example, the second direction (X) may be perpendicular to the first direction (Z), but is not limited thereto, and the angle between the first direction (Z) and the second direction (X) may not be perpendicular. For example, the second direction (X) may be parallel to the first side (s1) of the screen (S). For example, the second direction (X) may be parallel to the long side of the screen (S). Alternatively, for example, the second direction (X) may be parallel to the short side of the screen (S). For example, the second direction (X) may be parallel to the horizontal direction of the display device (1) parallel to the ground. Alternatively, for example, the second direction (X) may be parallel to the vertical direction of the display device (1) perpendicular to the ground.

[0055] Hereinafter, a direction different from the first direction (Z) and the second direction (X) is defined as the third direction (Y). For example, the third direction (Y) may be perpendicular to the first direction (Z) and the second direction (X), but is not limited thereto, and the third direction (Y) may not be perpendicular to the first direction (Z) or the second direction (X). The drawings illustrate an embodiment in which the third direction (Y) is parallel to the short side of the screen (S) and parallel to the vertical direction of the display device (1), but various embodiments of the present disclosure are not limited thereto.

[0056] The properties of light emitted from a display device (1) can be defined by a light field. A light field can be defined as a function representing the direction of propagation and intensity of light at every point in three-dimensional space. The display device (1) can control the light field of light emitted from a screen (S) so that only a specific image is visible at a specific point among a plurality of viewpoints (V). By making only a specific image visible at a specific point in time, different images can be provided for each of the plurality of viewpoints.

[0057] For example, referring to FIG. 2, light (L1a) traveling from a first point (P1) on the screen (S) to a first viewpoint (VA), light (L1b) traveling from the first point (P1) to a second viewpoint (VB), and light (L1c) traveling from the first point (P1) to a third viewpoint (VC) can provide different images. The combination of subpixels providing light (L1a) from the first point (P1) on the screen (S) toward the first viewpoint (VA), the combination of subpixels providing light (L1b) from the first point (P1) toward the second viewpoint (VB), and the combination of subpixels providing light (L1c) from the first point (P1) toward the third viewpoint (VC) may be different from each other. That is, the viewer can perceive different images when looking at the first point (P1) on the screen (S) from the first viewpoint (VA), when looking at the first point (P1) on the screen (S) from the second viewpoint (VB), and when looking at the first point (P1) on the screen (S) from the third viewpoint (VC). The first point (P1) illustrated in FIG. 2 is exemplified as a point approximately adjacent to the center in the second direction (X) of the screen (S), but is not limited thereto.

[0058] Likewise, for example, referring to FIG. 2, light (L2a) traveling from a second point (P2) on the screen (S) to a first viewpoint (VA), light (L2b) traveling from the second point (P2) to a second viewpoint (VB), and light (L2c) traveling from the second point (P2) to a third viewpoint (VC) can provide different images. The combination of subpixels providing light (L2a) from the second point (P2) on the screen (S) toward the first viewpoint (VA), the combination of subpixels providing light (L2b) from the second point (P2) toward the second viewpoint (VB), and the combination of subpixels providing light (L2c) from the second point (P2) toward the third viewpoint (VC) may be different from each other. That is, the viewer can perceive different images when looking at the second point (P2) on the screen (S) from the first viewpoint (VA), when looking at the second point (P2) on the screen (S) from the second viewpoint (VB), and when looking at the second point (P2) on the screen (S) from the third viewpoint (VC). The second point (P2) illustrated in FIG. 2 is exemplified as a point adjacent to the edge area of ​​the screen (S) in the second direction (X) of the screen (S), but is not limited thereto.

[0059] Thus, the viewer can perceive that different images are displayed on the screen (S) depending on the viewpoint (V). In order to provide different images to multiple viewpoints (V) as described above, a display device (1) according to one embodiment of the present disclosure may include a multi-view lens (40, see FIG. 3, FIG. 5, etc.) configured to separate light emitted from a light source (30, see FIG. 4, etc.) and provide it to each viewpoint (V). The multi-view lens (40) may also be referred to as a "lenticular lens." A detailed description thereof will be provided later.

[0060] In the above description, the city area was described using an example where it is divided into three points (VA, VB, VC), but this is for the convenience of explanation and illustration, and in various embodiments of the present disclosure, the city area may be divided into various numbers of points.

[0061] According to one embodiment of the present disclosure, a display device (1) may be configured to provide images from mutually spaced points on a screen (S) at each of a plurality of viewpoints (V). For example, the viewpoints (VA, VB, VC) where light (L1a, L1b, L1c) from a first point (P1) reaches and the viewpoints (VA, VB, VC) where light (L2a, L2b, L2c) from a second point (P2) reaches may coincide with each other. This allows the area of ​​the plurality of viewpoints (V) provided by the display device (1) to be expanded, that is to say, the display device (1) can provide a wider viewing area.

[0062] FIG. 2 illustrates an embodiment in which a plurality of viewpoints (V) are arranged in one direction (e.g., a second direction (X)), but according to various embodiments of the present disclosure, a plurality of viewpoints (V) may be arranged in a plurality of directions (e.g., a second direction (X) and a third direction (Y)). For example, an image displayed on a screen (S) may vary along the second direction (X) and simultaneously along the third direction (Y).

[0063] However, for the sake of convenience of explanation, the following description is based on an embodiment in which multiple viewpoints (V) are arranged in one direction (e.g., the second direction (X)).

[0064] Hereinafter, the configurations of a display device (1) for providing different images at multiple viewpoints (V) are described in detail with reference to various embodiments of the present disclosure.

[0065] FIG. 3 is an exploded perspective view illustrating the components of a display device according to one embodiment of the present disclosure. FIG. 4 is a drawing illustrating a light source array of a display device according to one embodiment of the present disclosure and light sources included therein.

[0066] Referring to FIGS. 3 and 4, a display device (1) according to one embodiment of the present disclosure may include a case (10) that supports various parts of the display device (1). Various parts of the display device (1) may be accommodated in the case (10). The case (10) may form the exterior of the display device (1).

[0067] For example, the case (10) can support a light source array (20). For example, the case (10) can support a multi-view lens (40). For example, the case (10) can support a board assembly (50).

[0068] The case (10) may include a front chassis (11). For example, the front chassis (11) may support the front or side edges of the light source array (20). For example, the front chassis (11) may have the shape of a roughly rectangular frame.

[0069] The case (10) may include a rear chassis (12). For example, the rear chassis (12) may cover the rear of the light source array (20). For example, the rear chassis (12) may support the rear of the light source array (20). For example, the rear chassis (12) may support a board assembly (50). For example, the rear chassis (12) may have a roughly flat plate shape, but its shape is not limited thereto.

[0070] The display device (1) may include a light source array (20) arranged to emit light. The light source array (20) may be arranged to emit light in a first direction (Z). The light source array (20) may be arranged to emit light for providing an image.

[0071] For example, the light source array (20) may have the shape of a roughly rectangular plate. For example, the light source array (20) may have a shape that corresponds roughly to the screen (S).

[0072] For example, the light source array (20) may have a first side (21) and a second side (22). The light source array (20) may have a pair of first sides (21) and a pair of second sides (22) that are parallel to each other. For example, the first side (21) of the light source array (20) may be parallel to the second direction (X). For example, the second side (22) of the light source array (20) may be parallel to the third direction (Y).

[0073] For example, the first side (21) of the light source array (20) may be parallel to the direction in which a plurality of viewpoints (V) are partitioned and arranged from each other (see FIG. 2). However, the embodiments of the present disclosure are not limited thereto, and in various embodiments, the second side (22) other than the first side (21) of the light source array (20) may be parallel to the direction in which a plurality of viewpoints (V) are partitioned and arranged from each other. Alternatively, in various embodiments, the plurality of viewpoints (V) may be arranged in the form of an M*N matrix (where M and N are each natural numbers greater than or equal to 2), and the first side (21) and the second side (22) of the light source array (20) may each be parallel to either the row direction or the column direction in which a plurality of viewpoints (V) are partitioned and arranged from each other.

[0074] For example, the first side (21) of the light source array (20) may be parallel to the long side of the screen (S). Alternatively, for example, the first side (21) of the light source array (20) may be parallel to the short side of the screen (S).

[0075] For example, the first side (21) of the light source array (20) may be parallel to the horizontal direction of the display device (1). Alternatively, for example, the first side (21) of the light source array (20) may be parallel to the vertical direction of the display device (1).

[0076] A light source array (20) may include a plurality of light sources (30). Each of the plurality of light sources (30) may be arranged to emit light in approximately the same direction as each other. Each of the plurality of light sources (30) may be arranged to emit light in a first direction (Z). The light source array (20) may be formed by arranging the plurality of light sources (30) at regular intervals. The spacing between the plurality of light sources (30) may be uniform or non-uniform. For example, the light source array (20) may include a plurality of light sources (30) arranged in a plurality of rows and a plurality of columns. The rows of the light sources (30) may be an arrangement extending in a second direction (X). The columns of the light sources (30) may be an arrangement extending in a third direction (Y).

[0077] For example, each of the plurality of light sources (30) may correspond to each pixel (P) of the screen (S). Alternatively, for example, a combination of a predetermined number of light sources (30) arranged adjacent to each other among the plurality of light sources (30) may correspond to each pixel (P) of the screen (S). That is, a predetermined number (at least one or more) of the light sources (30) among the plurality of light sources (30) may form each pixel (P) of the screen (S), and the plurality of light sources (30) as a whole may form an image.

[0078] Each of the plurality of light sources (30) may include a light-emitting element (31, see FIG. 7, etc.). Each of the plurality of light sources (30) may include one or more light-emitting elements (31). The light-emitting element (31) may be configured to emit light by receiving a driving voltage and / or a driving current. For example, the light-emitting element (31) may be a light-emitting diode (LED) element.

[0079] A display device (1) according to one embodiment of the present disclosure may include a self-emissive type display device in which a light source array (20) having a plurality of LEDs as light sources (30) itself displays an image. In addition, the light source array (20) of the display device (1) may include various types of display panels, such as self-emissive type panels like Organic Light-Emitting Diode (OLED) or Micro-LED panels, or light-emitting type panels like Liquid Crystal Display (LCD) panels. If the light source array (20) is a light-emitting display panel such as an LCD panel, each part of a pixel formed on the display panel (e.g., a sub-pixel) may be defined as a light source (30).

[0080] A light source array (20) may include a light source substrate (25) on which a plurality of light sources (30) are mounted. The light source substrate (25) may include a circuit to which the plurality of light sources (30) are electrically connected. The plurality of light sources (30) may receive a driving voltage and / or a driving current through the circuit of the light source substrate (25). For example, the light source substrate (25) may have a roughly rectangular plate shape. The light source substrate (25) on which all of the light sources (30) are mounted may be provided as a single unit, or it may be provided as a plurality of light source substrates (25) that are separated from one another.

[0081] A light source array (20) may be configured to emit light to provide different images at multiple viewpoints. Some of the multiple light sources (30) may be combined to emit light to provide a specific image (e.g., a first image) at a specific viewpoint (e.g., a first viewpoint) among the multiple viewpoints (V), and other parts of the multiple light sources (30) may be combined to emit light to provide a different specific image (e.g., a second image different from the first image) at a different specific viewpoint (e.g., a second viewpoint different from the first viewpoint) among the multiple viewpoints (V).

[0082] The number of multiple light sources (30) may be equal to or greater than the number of multiple viewpoints (V) included in the entire viewing area. The number of columns of multiple light sources (30) may be equal to or greater than the number of multiple viewpoints (V) included in the entire viewing area. The number of light sources (30) included in a single row may be equal to or greater than the number of multiple viewpoints (V) included in the entire viewing area.

[0083] The display device (1) may include a multi-view lens (40) so that light emitted from each of the plurality of light sources (30) can be directed toward each of the predetermined viewpoints (V). The multi-view lens (40) may be positioned in the first direction (Z) (i.e., forward) of the light source array (20). The multi-view lens (40) may be positioned in the first direction (Z) of each of the plurality of light sources (30). The multi-view lens (40) may be configured to direct light emitted from each of the plurality of light sources (30) toward each of the predetermined viewpoints (V). The multi-view lens (40) may change the path of light emitted from each of the plurality of light sources (30) so that it is directed toward each of the predetermined viewpoints (V).

[0084] A detailed description of the structure and function of the multi-view lens (40) will be provided later.

[0085] The display device (1) may include various board assemblies (50). Electronic components may be mounted on the board assembly (50), and a circuit including the electronic components may be provided on the board assembly (50). For example, the circuit of the board assembly (50) may be formed by printing a conductive material, such as copper (Cu), as a circuit line pattern on an electrically insulating substrate. The board assembly (50) may be provided to control various components for performing the functions of the display device (1), such as a light source array (20), and to supply power to the components.

[0086] The board assembly (50) may include various circuit boards such as a main board, a power supply board, and a source board.

[0087] For example, the main board can control the overall operation of the display device (1). The main board may include a processor and a power management device for driving the display device (1). The main board may include a control circuit for controlling components such as a light source array (20), a communication module, and a content receiving unit for receiving content data from content sources.

[0088] For example, a power supply board may be provided to supply power to various components of a display device (1). The power supply board may include a Switched Mode Power Supply (SMPS) board. The power supply board may include a power supply circuit for supplying power to components such as a light source array (20).

[0089] For example, a source board can control a light source array (20). The source board can control the driving of each of the plurality of light sources (30) by transmitting a driving signal to the light source array (20). The source board may include a control circuit for controlling the light source array (20).

[0090] Circuit boards of the board assembly (50), such as the main board, power supply board, and source board, may be arranged independently of each other or merged together. When the circuit boards are arranged independently of each other, they may be electrically connected to each other to transmit data, signals, or power. For example, the circuit boards of the board assembly (50) may be electrically connected to each other by cables to perform functions for driving the display device (1). The cables may include various types of cables, such as film cables, flexible flat cables (FFC), and flexible printed circuit boards (FPCB).

[0091] The display device (1) may include a cable that transmits image data from a board assembly (50) to a light source array (20), a display driver integrated circuit (DDI) that processes digital image data and outputs an analog image signal, etc.

[0092] The configurations of the display device (1) described above with reference to FIGS. 3 and FIGS. 4 are merely examples of configurations that may be included in the display device (1) according to one embodiment of the present disclosure, and the present disclosure is not limited thereto. The display device (1) according to various embodiments of the present disclosure may include various configurations for performing various functions of the display device (1).

[0093] FIG. 5 is an exploded perspective view illustrating a light source array, a slit layer, and a multi-view lens of a display device according to one embodiment of the present disclosure. FIG. 6 is a cross-sectional view illustrating a light source array, a slit layer, and a multi-view lens of a display device according to one embodiment of the present disclosure. FIG. 7 is a cross-sectional view illustrating a light source of a display device according to one embodiment of the present disclosure.

[0094] Referring to FIGS. 5 to 7, a display device (1) according to one embodiment of the present disclosure may include a light source array (20) comprising a plurality of light sources (30), a multi-view lens (40) configured to change the direction of propagation of light emitted from the light source array (20) and emit light to a corresponding viewpoint among a plurality of viewpoints (V), and a slit layer (100) disposed between the light source array (20) and the multi-view lens (40).

[0095] The light source array (20) may include a plurality of light sources (30A, 30B, 30C) arranged side by side. The plurality of light sources (30A, 30B, 30C) may be arranged to emit light to be provided at different times among a plurality of times (V).

[0096] For example, a plurality of light sources (30A, 30B, 30C) may be arranged in a second direction (X) relative to each other. For example, a light source array (20) may include columns of light sources (30A, 30B, 30C) arranged in a second direction (X) relative to each other, and each column of light sources (30) may extend in a third direction (Y). However, in various embodiments, the arrangement of the plurality of light sources (30A, 30B, 30C) is not limited thereto, and the plurality of light sources (30A, 30B, 30C) may be arranged in various ways according to the arrangement of a plurality of viewpoints (V).

[0097] The multi-view lens (40) may be positioned adjacent to the first direction (Z) of the light source array (20). For example, the multi-view lens (40) may be positioned in front of the light source array (20). For example, the multi-view lens (40) may be positioned adjacent to the front of the light source array (20). For example, the incident surface (41) of the multi-view lens (40) into which light from the light source array (20) is incident may be positioned adjacent to the first direction (Z) of the light source array (20).

[0098] For example, the multi-view lens (40) can be fixed to the light source array (20) by means of adhesive or screws, etc. In addition, the multi-view lens (40) and the light source array (20) can be fixed to each other in various ways.

[0099] The multi-view lens (40) may include a plurality of lenses (40A, 40B, 40C). The plurality of lenses (40A, 40B, 40C) may each be positioned adjacent to the first direction (Z) of a plurality of light sources (30A, 30B, 30C). The plurality of lenses (40A, 40B, 40C) may be arranged to refract light emitted from a corresponding light source among the plurality of light sources (30A, 30B, 30C) and emit light to a corresponding viewpoint among the plurality of viewpoints (V). For example, light emitted from a corresponding light source among a plurality of light sources (30A, 30B, 30C) may be incident on the incident surface (41) of each of the plurality of lenses (40A, 40B, 40C), and the incident light may be refracted and emitted to a corresponding viewpoint among a plurality of viewpoints (V) through the exit surface (42) of each of the plurality of lenses (40A, 40B, 40C).

[0100] For example, a plurality of lenses (40A, 40B, 40C) may be arranged in a second direction (X) relative to each other. For example, a multi-view lens (40) may include columns of lenses (40A, 40B, 40C) arranged in a second direction (X) relative to each other, and each column of lenses (40A, 40B, 40C) may extend in a third direction (Y). However, in various embodiments, the arrangement of the plurality of lenses (40A, 40B, 40C) is not limited thereto, and the plurality of lenses (40A, 40B, 40C) may be arranged in various ways according to the arrangement of a plurality of light sources (30A, 30B, 30C) or an arrangement of a plurality of viewpoints (V).

[0101] According to one embodiment, a plurality of lenses (40A, 40B, 40C) and a plurality of light sources (30A, 30B, 30C) may correspond in a one-to-one manner. Light emitted from one of the plurality of light sources (30A, 30B, 30C) may be incident on and refracted by one of the plurality of lenses (40A, 40B, 40C).

[0102] In this way, when multiple lenses (40A, 40B, 40C) and multiple light sources (30A, 30B, 30C) correspond to each other in a one-to-one manner, light control, lens design, and manufacturing can be made easier. Additionally, each of the multiple light sources (30A, 30B, 30C) and each of the corresponding multiple lenses (40A, 40B, 40C) can form a single pixel as a set, making it easier to provide a more natural image to the viewer.

[0103] The embodiments of the present disclosure are not limited to cases where a plurality of lenses (40A, 40B, 40C) and a plurality of light sources (30A, 30B, 30C) correspond to each other in a one-to-one manner, and in various embodiments, one or more of the plurality of lenses (40A, 40B, 40C) may correspond to two or more of the plurality of light sources (30A, 30B, 30C). However, for convenience of explanation, the following description is based on an embodiment in which a plurality of lenses (40A, 40B, 40C) and a plurality of light sources (30A, 30B, 30C) correspond to each other in a one-to-one manner as shown in FIGS. 5 and 6.

[0104] According to one embodiment, a plurality of lenses (40A, 40B, 40C) may have the same shape as each other. Alternatively, in various embodiments, at least some of the plurality of lenses (40A, 40B, 40C) may have different shapes. For example, the plurality of lenses (40A, 40B, 40C) may have different shapes depending on the corresponding viewpoint (V). For example, the plurality of lenses (40A, 40B, 40C) may have different shapes depending on their position in the display device (1) (e.g., a position adjacent to the center of the screen (S), or a position adjacent to the edge of the screen (S)).

[0105] According to one embodiment, a plurality of lenses (40A, 40B, 40C) may be formed integrally. However, this is not limited thereto, and in various embodiments, a plurality of lenses (40A, 40B, 40C) may be formed separately from each other.

[0106] Hereinafter, with reference to embodiments illustrated in FIGS. 5 and 6, etc., an embodiment is described in which a light source array (20) includes a first light source (30A), a second light source (30B), and a third light source (30C) arranged adjacently to each other and configured to emit light for providing to different viewpoints (VA, VB, VC) among a plurality of viewpoints (V), and a multi-view lens (40) includes a first lens (40A), a second lens (40B), and a third lens (40C) arranged adjacently to each other and configured to refract light toward different viewpoints (VA, VB, VC) among a plurality of viewpoints (V). In such an embodiment, the plurality of viewpoints (V) provided by the display device (1) may include a first viewpoint (VA), a second viewpoint (VB), and a third viewpoint (VC) that are separated from each other (see FIG. 2, etc.). However, the embodiments of the present disclosure are not limited thereto, and according to various embodiments, the plurality of viewpoints (V) provided by the display device (1) may include only two viewpoints or four or more viewpoints, and the number of light sources (30) included in the light source array (20) and the number of lenses included in the multi-view lens (40) may vary depending on the number of viewpoints (V).

[0107] According to one embodiment, a first time point (VA), a second time point (VB), and a third time point (VC) may be arranged relative to each other in a second direction (X). The first time point (VA), the second time point (VB), and the third time point (VC) may be arranged relative to each other along the second direction (X) in a time area. The first time point (VA), the second time point (VB), and the third time point (VC) may be arranged adjacent to each other in the second direction (X). For example, the first time point (VA), the second time point (VB), and the third time point (VC) may be arranged in order along the second direction (X). The second time point (VB) may be placed between the first time point (VA) and the third time point (VC).

[0108] The first light source (30A) may be configured to emit light to be provided at the first time point (VA) among the plurality of time points (V). For example, the first light source (30A) may be included in one row of the rows of light sources (30) included in the light source array (20), and the first light source (30A) may be provided in multiple numbers and included in each of the multiple rows, and each of the multiple first light sources (30A) may correspond to the first time point (VA).

[0109] The second light source (30B) may be configured to emit light to be provided at the second time point (VB) among the plurality of time points (V). For example, the second light source (30B) may be included in one row of the rows of light sources (30) included in the light source array (20), and the second light source (30B) may be provided in multiple numbers and included in each of the multiple rows, and each of the multiple second light sources (30B) may correspond to the second time point (VB).

[0110] The third light source (30C) may be configured to emit light to be provided at the third time point (VC) among the plurality of time points (V). For example, the third light source (30C) may be included in one row of the rows of light sources (30) included in the light source array (20), and the third light source (30C) may be provided in multiple numbers and included in each of the multiple rows, and each of the multiple third light sources (30C) may correspond to the third time point (VC).

[0111] According to one embodiment, the first light source (30A), the second light source (30B), and the third light source (30C) may be arranged in a second direction (X) relative to each other. The first light source (30A), the second light source (30B), and the third light source (30C) may be arranged adjacent to each other in the second direction (X). For example, the first light source (30A), the second light source (30B), and the third light source (30C) may be arranged in order along the second direction (X). The second light source (30B) may be placed between the first light source (30A) and the third light source (30C).

[0112] For example, the first light source (30A), the second light source (30B), and the third light source (30C) may be arranged at equal intervals along the second direction (X).

[0113] As illustrated in FIGS. 2, FIGS. 5, FIGS. 6 and FIGS. 8 referenced later, etc., according to one embodiment, the order in which the first light source (30A), the second light source (30B), and the third light source (30C) are arranged along the second direction (X) and the order in which the first viewpoint (VA), the second viewpoint (VB), and the third viewpoint (VC) are arranged along the second direction (X) may be opposite to each other.

[0114] The first lens (40A) may correspond to the first light source (30A). The first lens (40A) may be configured to refract light emitted from the first light source (30A) to the first viewpoint (VA). For example, the first lens (40A) may be included in one row of the rows of lenses included in the multi-view lens (40), and the first lens (40A) may be provided in multiple numbers and included in each of the multiple rows, and each of the multiple first lenses (40A) may correspond to the first viewpoint (VA). The first lens (40A) may be named with terms such as "first refractive part."

[0115] The first lens (40A) may be positioned in a first direction (Z) with respect to the first light source (30A). The first lens (40A) may be positioned adjacent to the first light source (30A) in the first direction (Z). For example, the first lens (40A) may be positioned in front of the first light source (30A).

[0116] The second lens (40B) may correspond to the second light source (30B). The second lens (40B) may be configured to refract light emitted from the second light source (30B) to the second viewpoint (VB). For example, the second lens (40B) may be included in one row of the rows of lenses included in the multi-view lens (40), and the second lens (40B) may be provided in multiple numbers and included in each of the multiple rows, and each of the multiple second lenses (40B) may correspond to the second viewpoint (VB). The second lens (40B) may be named with terms such as "second refractive part."

[0117] The second lens (40B) may be positioned in the first direction (Z) with respect to the second light source (30B). The second lens (40B) may be positioned adjacent to the second light source (30B) in the first direction (Z). For example, the second lens (40B) may be positioned in front of the second light source (30B).

[0118] The third lens (40C) may correspond to the third light source (30C). The third lens (40C) may be configured to refract light emitted from the third light source (30C) to the third viewpoint (VC). For example, the third lens (40C) may be included in one row of the rows of lenses included in the multi-view lens (40), and the third lens (40C) may be provided in multiple numbers and included in each of the multiple rows, and each of the multiple third lenses (40C) may correspond to the third viewpoint (VC). The third lens (40C) may also be named using terms such as "third refractive part."

[0119] The third lens (40C) may be positioned in the first direction (Z) with respect to the third light source (30C). The third lens (40C) may be positioned adjacent to the third light source (30C) in the first direction (Z). For example, the third lens (40C) may be positioned in front of the third light source (30C).

[0120] According to one embodiment, the first lens (40A), the second lens (40B), and the third lens (40C) may be arranged in a second direction (X) relative to each other. The first lens (40A), the second lens (40B), and the third lens (40C) may be arranged adjacent to each other in the second direction (X). For example, the first lens (40A), the second lens (40B), and the third lens (40C) may be arranged in order along the second direction (X). The second lens (40B) may be placed between the first lens (40A) and the third lens (40C).

[0121] For example, the first lens (40A), the second lens (40B), and the third lens (40C) may be arranged at equal intervals along the second direction (X).

[0122] As illustrated in FIGS. 5 and 6, etc., according to one embodiment, the order in which the first light source (30A), the second light source (30B), and the third light source (30C) are arranged along the second direction (X) and the order in which the first lens (40A), the second lens (40B), and the third lens (40C) are arranged along the second direction (X) may be the same.

[0123] Each of the first lens (40A), the second lens (40B), and the third lens (40C) may include an incident surface (41) and an exit surface (42). Each of the first lens (40A), the second lens (40B), and the third lens (40C) may be configured to refract light incident through the incident surface (41) and emit it through the exit surface (42). The incident surface (41) of each of the first lens (40A), the second lens (40B), and the third lens (40C) may be one side adjacent to the plurality of light sources (30) and the slit layer (100) described later. The exit surface (42) of each of the first lens (40A), the second lens (40B), and the third lens (40C) may be the other side opposite to the incident surface (41).

[0124] For example, the incident surface (41) of each of the first lens (40A), the second lens (40B), and the third lens (40C) may have an approximately planar shape. For example, the incident surface (41) of each of the first lens (40A), the second lens (40B), and the third lens (40C) may be aligned with each other in the second direction (X). For example, the incident surface (41) of each of the first lens (40A), the second lens (40B), and the third lens (40C) may be connected to each other.

[0125] For example, the exit surfaces of each of the first lens (40A), the second lens (40B), and the third lens (40C) may have a curved surface that is convex in the first direction (Z). For example, the exit surfaces of each of the first lens (40A), the second lens (40B), and the third lens (40C) may have a curved surface that is convex toward the side opposite to the light source array (20) (e.g., forward). For example, the exit surfaces of each of the first lens (40A), the second lens (40B), and the third lens (40C) may be connected to each other.

[0126] However, the shapes of the plurality of lenses (40A, 40B, 40C) included in the multi-view lens (40) are not limited thereto, and according to various embodiments, the multi-view lens (40) may include lenses of various shapes that allow light emitted from each of the first light source (30A), the second light source (30B), and the third light source (30C) to pass through the multi-view lens (40), refract, and proceed to each corresponding viewpoint (VA, VB, VC).

[0127] For example, as illustrated in FIG. 2, the direction in which light travels from each light source (30) toward each viewpoint (V) may vary depending on the position on the screen (S) (e.g., first point (P1) and second point (P2)). Alternatively, even if the positions on the screen (S) are nearly identical or very similar, the direction in which light travels may vary depending on which light source (30) emits the light and which viewpoint (V) it is provided to. Accordingly, the multi-view lens (40) may include lenses having various shapes or refractive indices depending on the conditions so as to refract light from multiple light sources (30) and properly propagate it toward each viewpoint (V).

[0128] With the structure of the multiple light sources (30) and multi-view lenses (40) as described above, the entire viewing area can have multiple viewpoints (V) where different images are provided.

[0129] In order to improve the image quality provided at each of the multiple viewpoints (V), it is desirable that the multiple viewpoints (V) do not overlap with each other, and that light emitted from each of the multiple light sources (30) is refracted by a multi-view lens (40) and then proceeds only to the corresponding viewpoint (V). For example, it is desirable that light emitted from the first light source (30A) is refracted by the first lens (40A) and proceeds only to the first viewpoint (VA) and not to the second viewpoint (VB) or the third viewpoint (VC), that light emitted from the second light source (30B) is refracted by the second lens (40B) and proceeds only to the second viewpoint (VB) and not to the first viewpoint (VA) or the third viewpoint (VC), and that light emitted from the third light source (30C) is refracted by the third lens (40C) and proceeds only to the third viewpoint (VC) and not to the first viewpoint (VA) or the second viewpoint (VB).

[0130] Thus, in order to improve the image quality provided at each of the multiple viewpoints (V), it may be required to prevent crosstalk so that light from the first light source (30A), light from the second light source (30B), and light from the third light source (30C) do not overlap with each other in the viewing area. In various embodiments, the display device (1) may be designed so that the width of the light emitted from each of the multiple light sources (30) and incident on the multi-view lens (40) is less than or equal to a predetermined width, thereby reducing and / or preventing crosstalk. In various embodiments, the display device (1) may be designed so that the path of the light emitted from each of the multiple light sources (30) and incident on the multi-view lens (40) is controlled, thereby reducing and / or preventing crosstalk.

[0131] Referring to FIG. 7, according to one embodiment, each of the plurality of light sources (30) included in the display device (1) may include a light-emitting element (31) and a light source case (32) that accommodates the light-emitting element (31). The light source case (32) may support the light-emitting element (31). According to one embodiment, the light source (30) may be a package type light source in which the light-emitting element (31) is packaged by the light source case (32).

[0132] The light-emitting element (31) may be configured to emit light when a driving voltage and / or driving current is applied. For example, the light-emitting element (31) may include a light-emitting diode (LED).

[0133] According to one embodiment, the light-emitting element (31) may include a plurality of light-emitting elements (31) configured to emit light of different colors (e.g., red, green, blue, etc.).

[0134] The light source (30) may include an electrode (34) made of a conductive material that is electrically connected to a light source substrate (25). The electrode (34) may be connected to a light-emitting element (31). A driving voltage and / or driving current may be applied through the electrode (34). The light source (30) may be mounted on the light source substrate (25) by connecting the electrode (34) to the light source substrate (25). The electrode (34) may extend from the light source case (32) toward the light source substrate (25).

[0135] According to one embodiment, the light source (30) may include a light-transmitting resin (33) that is placed inside a light source case (32) and surrounds a light-emitting element (31). The light-transmitting resin (33) may be configured to allow light emitted from the light-emitting element (31) to pass through while protecting the light-emitting element (31). The light-emitting element (31) may be optically transparent or translucent.

[0136] For example, the light-transmitting resin (33) may include a silicone or epoxy resin material. For example, the light-transmitting resin (33) may be formed by injecting molten silicone or epoxy resin into a light source case (32) through a nozzle to surround a light-emitting element (31), and by curing the injected silicone or epoxy resin.

[0137] The light source case (32) may form a receiving space in which a light-emitting element (31) is received. The light source case (32) may surround the light-emitting element (31). The light source case (32) may surround the light-emitting element (31), but at least one side may be open so that light emitted from the light-emitting element (31) can pass through. The light source case (32) may include an opening (32a) provided on one side so that light emitted from the light-emitting element (31) can be transmitted. For example, the opening (32a) may be formed on one side of the light source case (32) in the first direction (Z). For example, the opening (32a) may be formed on one side adjacent to the multi-view lens (40) of the light source case (32). For example, the opening (32a) may be formed on one side adjacent to the slit layer (100) to be described later of the light source case (32).

[0138] Light emitted from the light-emitting element (31) can travel in multiple directions through the aperture (32a). For example, light emitted from the light-emitting element (31) can travel with a Lambertian distribution. If light emitted from the light source (30) is directly incident on the multi-view lens (40), the width of the incident light may not be narrow enough to prevent crosstalk between multiple viewpoints (V). Additionally, if the path of light emitted from the light source (30) is not properly controlled, crosstalk between multiple viewpoints (V) may not be sufficiently prevented. If crosstalk occurs, different viewpoints (V) may not be clearly separated, which may result in a problem of degraded image quality.

[0139] In an embodiment of the present disclosure, to reduce and / or prevent such crosstalk, the display device (1) may include a slit layer (100). The slit layer (100) may be disposed between a light source array (20) and a multi-view lens (40). The slit layer (100) may be disposed between a plurality of light sources (30) and a multi-view lens (40). The slit layer (100) may be disposed adjacent to the light source array (20) and the plurality of light sources (30) in a first direction (Z). The slit layer (100) may be disposed adjacent to the incident surface (41) of the multi-view lens (40) in a first direction (Z). The light source array (20), the slit layer (100), and the multi-view lens (40) may be arranged along the first direction (Z). For example, the slit layer (100) may be positioned in front of a light source array (20) or a plurality of light sources (30) and in the rear of a multi-view lens (40). The slit layer (100) may cover the front surface of the light source array (20) or a plurality of light sources (30) facing the multi-view lens (40). The slit layer (100) may cover the incident surface (41) of the multi-view lens (40).

[0140] The slit layer (100) may be configured to transmit at least a portion of the light emitted from a plurality of light sources (30) to a multi-view lens (40). The width of the light emitted from the plurality of light sources (30) may be limited to a predetermined width or less as it passes through the slit layer (100). The light emitted from the plurality of light sources (30) may pass through the slit layer (100), and its direction of travel and path may be controlled, and it may be incident on the multi-view lens (40) along the designed path.

[0141] The slit layer (100) may include a plurality of slits (110) arranged to transmit at least a portion of light emitted from a plurality of light sources (30). Each of the plurality of slits (110) may have a shape in which a portion of the slit layer (100) is penetrated so that light can be transmitted.

[0142] For example, a plurality of slits (110) can correspond one-to-one with a plurality of light sources (30). For example, a plurality of slits (110) can correspond one-to-one with a plurality of lenses included in a multi-view lens (40).

[0143] According to one embodiment, the slit layer (100) may include a first slit (111) provided to transmit at least a portion of the light emitted from the first light source (30A) toward the first lens (40A). The first slit (111) may be provided to transmit the light emitted from the first light source (30A) to a width less than or equal to a predetermined width. The first slit (111) may be provided to control the direction and path of propagation of the light emitted from the first light source (30A) to a predetermined direction and path. The first slit (111) may be positioned between the first light source (30A) and the first lens (40A). For example, the first slit (111) may be positioned in front of the first light source (30A) and behind the first lens (40A).

[0144] According to one embodiment, the width of the first slit (111) in the second direction (X) may be smaller than the width of the opening (32a) of the light source case (32) included in the first light source (30A) in the second direction (X). Thus, the first slit (111) can limit the width of the light emitted from the first light source (30A) in the second direction (X) to a predetermined width or less.

[0145] According to one embodiment, the first slit (111) may have a shape in which the width in the second direction (X) is less than or equal to the width in the third direction (Y). However, the shape of the first slit (111) is not limited thereto, and in various embodiments, the first slit (111) may have various shapes.

[0146] According to one embodiment, the slit layer (100) may include a second slit (112) arranged to transmit at least a portion of the light emitted from the second light source (30B) toward the second lens (40B). The second slit (112) may be arranged to transmit the light emitted from the second light source (30B) to a width less than or equal to a predetermined width. The second slit (112) may be arranged to control the direction and path of the light emitted from the second light source (30B) to a predetermined direction and path. The second slit (112) may be positioned between the second light source (30B) and the second lens (40B). For example, the second slit (112) may be positioned in front of the second light source (30B) and behind the second lens (40B).

[0147] According to one embodiment, the width of the second slit (112) in the second direction (X) may be smaller than the width of the opening (32a) of the light source case (32) included in the second light source (30B) in the second direction (X). Thus, the second slit (112) can limit the width of the light emitted from the second light source (30B) in the second direction (X) to a predetermined width or less.

[0148] According to one embodiment, the second slit (112) may have a shape in which the width in the second direction (X) is less than or equal to the width in the third direction (Y). However, the shape of the second slit (112) is not limited thereto, and in various embodiments, the second slit (112) may have various shapes.

[0149] According to one embodiment, the slit layer (100) may include a third slit (113) provided to transmit at least a portion of the light emitted from the third light source (30C) toward the third lens (40C). The third slit (113) may be provided to transmit the light emitted from the third light source (30C) to a width less than or equal to a predetermined width. The third slit (113) may be provided to control the direction and path of propagation of the light emitted from the third light source (30C) to a predetermined direction and path. The third slit (113) may be positioned between the third light source (30C) and the third lens (40C). For example, the third slit (113) may be positioned in front of the third light source (30C) and behind the third lens (40C).

[0150] According to one embodiment, the width of the third slit (113) in the second direction (X) may be smaller than the width of the opening (32a) of the light source case (32) included in the third light source (30C) in the second direction (X). Thus, the third slit (113) can limit the width of the light emitted from the third light source (30C) in the second direction (X) to a predetermined width or less.

[0151] According to one embodiment, the third slit (113) may have a shape in which the width in the second direction (X) is less than or equal to the width in the third direction (Y). However, the shape of the third slit (113) is not limited thereto, and in various embodiments, the third slit (113) may have various shapes.

[0152] The first slit (111), the second slit (112), and the third slit (113) may be arranged in a second direction (X) relative to each other. The first slit (111) and the second slit (112) may be arranged adjacently in the second direction (X). The second slit (112) and the third slit (113) may be arranged adjacently in the second direction (X). The second slit (112) may be placed between the first slit (111) and the third slit (113).

[0153] As illustrated in FIGS. 5 and 6, etc., according to one embodiment, the order in which the first light source (30A), the second light source (30B), and the third light source (30C) are arranged along the second direction (X) and the order in which the first slit (111), the second slit (112), and the third slit (113) are arranged along the second direction (X) may be the same.

[0154] The slit layer (100) may include a light blocking section (120) provided to block a portion of light emitted from a plurality of light sources (30). The light blocking section (120) may limit the width of the light incident on the multi-view lens (40) by blocking a portion of the light emitted from the plurality of light sources (30). The light blocking section (120) may control the direction and path of the light incident on the multi-view lens (40) by blocking a portion of the light emitted from the plurality of light sources (30).

[0155] The light blocking portion (120) may be positioned around a plurality of slits (110). The slits (110) may be provided in an area surrounded by the light blocking portion (120). The slits (110) may be defined in a penetrating portion of the slit layer (100), and the light blocking portion (120) may be defined in another non-penetrating portion of the slit layer (100).

[0156] The light blocking portion (120) of the slit layer (100) may include various types of light-blocking materials.

[0157] According to one embodiment, the light blocking member (120) may include a material with a high light absorption rate to absorb a portion of the light emitted from a plurality of light sources (30). For example, the light blocking member (120) may have a black color.

[0158] According to one embodiment, the light blocking member (120) may include a material with high light reflectivity to reflect a portion of the light emitted from a plurality of light sources (30). For example, the light blocking member (120) may have a white color. For example, the light blocking member (120) may include a metal material with high reflectivity.

[0159] According to an embodiment of the present disclosure, the slit layer (100) may include two or more slit layers (e.g., a rear slit layer (200), a front slit layer (300), a coating layer (400)). The two or more slit layers included in the slit layer (100) may be arranged in a first direction (Z) between a plurality of light sources (30) and a multi-view lens (40). The two or more slit layers included in the slit layer (100) may be stacked in the first direction (Z).

[0160] Each of the plurality of slits (110) can be formed by connecting slits (e.g., rear slit (210), front slit (310), lens slit (410)) provided in each of the two or more slit layers included in the slit layer (100).

[0161] At least some of the plurality of slits (110) (e.g., first slit (111), third slit (113), etc.) may be formed by partially overlapping the slits provided in each of the two or more slit layers (e.g., first rear slit (211), first front slit (311) and first lens slit (411), or third rear slit (213), third front slit (313) and third lens slit (413), etc.), thereby making it easier to manufacture a narrower width slit (110).

[0162] In addition, as described below, at least some of the plurality of slits (110) (e.g., first slit (111), third slit (113), etc.) are extended at an angle with respect to the first direction (Z), thereby allowing for efficient control of the direction and path of light propagation. In the manufacturing process, it may be more efficient to form an angled slit by connecting the slits after forming slits in each of two or more slit layers, as in the embodiment of the present disclosure, rather than forming an angled slit in a single film-shaped slit layer. Furthermore, the control of the light path through the slits may also be more efficient.

[0163] The detailed structure of the slit layer (100) according to an embodiment of the present disclosure is described below.

[0164] FIG. 8 is a cross-sectional view illustrating a light source array, a slit layer, and a multi-view lens of a display device according to one embodiment of the present disclosure. FIG. 9 is an enlarged cross-sectional view illustrating a portion of the light source array, a slit layer, and a multi-view lens of a display device according to one embodiment of the present disclosure. FIG. 10 is an enlarged view illustrating a light source array and a multi-view lens of a display device according to a comparative embodiment.

[0165] Referring to FIGS. 8 and 9, a slit layer (100) included in a display device (1) according to one embodiment of the present disclosure may include a rear slit layer (200). The rear slit layer (200) may be disposed between a light source array (20) and a plurality of light sources (30) and a multi-view lens (40). The rear slit layer (200) may be disposed adjacent to the light source array (20) and the plurality of light sources (30) in a first direction (Z). The rear slit layer (200) may be disposed on one side facing the multi-view lens (40) of the light source array (20) and the plurality of light sources (30). The rear slit layer (200) may be disposed in front of the light source array (20) and the plurality of light sources (30).

[0166] In various embodiments, the rear slit layer (200) can be coupled to at least one of the light source array (20) or multi-view lens (40) by various fixing methods such as adhesive, screw fastening, etc.

[0167] For example, the rear slit layer (200) may have the form of a thin film.

[0168] The rear slit layer (200) may include a plurality of rear slits (210) arranged to transmit at least a portion of light emitted from a plurality of light sources (30). Each of the plurality of rear slits (210) may have a shape in which a portion of the rear slit layer (200) is penetrated so that light can be transmitted.

[0169] According to one embodiment, a plurality of rear slits (210) can correspond one-to-one with a plurality of light sources (30).

[0170] According to one embodiment, a plurality of rear slits (210) may include a first rear slit (211) configured to transmit at least a portion of light emitted from a first light source (30A). The first rear slit (211) may be configured to transmit light emitted from the first light source (30A) by a width less than or equal to a predetermined width. The first rear slit (211) may be configured to transmit at least a portion of light emitted from the first light source (30A) along a predetermined direction and path. The first rear slit (211) may be positioned between the first light source (30A) and the first lens (40A). For example, the first rear slit (211) may be positioned between the first light source (30A) and the first front slit (311) to be described later. For example, the first rear slit (211) can be positioned in front of the first light source (30A).

[0171] According to one embodiment, the width of the first rear slit (211) may be smaller than the width of the opening (32a) of the light source case (32) included in the first light source (30A). For example, the width of the first rear slit (211) in the second direction (X) may be smaller than the width of the opening (32a) of the light source case (32) included in the first light source (30A) in the second direction (X). Thus, the first rear slit (211) can limit the width of the light emitted from the first light source (30A) to a predetermined width or less.

[0172] According to one embodiment, the first rear slit (211) may have a rectangular shape in which the width in the second direction (X) is less than or equal to the width in the third direction (Y). However, the shape of the first rear slit (211) is not limited thereto, and in various embodiments, the first rear slit (211) may have various shapes.

[0173] The first rear slit (211) may be included in the first slit (111) described above.

[0174] According to one embodiment, a plurality of rear slits (210) may include a second rear slit (212) arranged to transmit at least a portion of light emitted from a second light source (30B). The second rear slit (212) may be arranged to transmit light emitted from the second light source (30B) by a width less than or equal to a predetermined width. The second rear slit (212) may be arranged to transmit at least a portion of light emitted from the second light source (30B) along a predetermined direction and path. The second rear slit (212) may be positioned between the second light source (30B) and the second lens (40B). For example, the second rear slit (212) may be positioned between the second light source (30B) and the second front slit (312) to be described later. For example, the second rear slit (212) can be positioned in front of the second light source (30B).

[0175] According to one embodiment, the width of the second rear slit (212) may be smaller than the width of the opening (32a) of the light source case (32) included in the second light source (30B). For example, the width of the second rear slit (212) in the second direction (X) may be smaller than the width of the opening (32a) of the light source case (32) included in the second light source (30B) in the second direction (X). Thus, the second rear slit (212) can limit the width of the light emitted from the second light source (30B) to a predetermined width or less.

[0176] According to one embodiment, the second rear slit (212) may have a rectangular shape in which the width in the second direction (X) is less than or equal to the width in the third direction (Y). However, the shape of the second rear slit (212) is not limited thereto, and in various embodiments, the second rear slit (212) may have various shapes.

[0177] The second rear slit (212) may be included in the aforementioned second slit (112).

[0178] According to one embodiment, a plurality of rear slits (210) may include a third rear slit (213) arranged to transmit at least a portion of light emitted from a third light source (30C). The third rear slit (213) may be arranged to transmit light emitted from the third light source (30C) by a width less than or equal to a predetermined width. The third rear slit (213) may be arranged to transmit at least a portion of light emitted from the third light source (30C) along a predetermined direction and path. The third rear slit (213) may be positioned between the third light source (30C) and the third lens (40C). For example, the third rear slit (213) may be positioned between the second light source (30B) and the third front slit (313) to be described later. For example, the third rear slit (213) can be positioned in front of the third light source (30C).

[0179] According to one embodiment, the width of the third rear slit (213) may be smaller than the width of the opening (32a) of the light source case (32) included in the third light source (30C). For example, the width of the third rear slit (213) in the second direction (X) may be smaller than the width of the opening (32a) of the light source case (32) included in the third light source (30C) in the second direction (X). Thus, the third rear slit (213) can limit the width of the light emitted from the third light source (30C) to a predetermined width or less.

[0180] According to one embodiment, the third rear slit (213) may have a rectangular shape in which the width in the second direction (X) is less than or equal to the width in the third direction (Y). However, the shape of the third rear slit (213) is not limited thereto, and in various embodiments, the third rear slit (213) may have various shapes.

[0181] The third rear slit (213) may be included in the aforementioned third slit (113).

[0182] The rear slit layer (200) may include a rear light blocking portion (220). The rear light blocking portion (220) may be provided to block a portion of light emitted from a plurality of light sources (30). The rear light blocking portion (220) may be arranged around the perimeter of a plurality of rear slits (210). The rear light blocking portion (220) may include a light-blocking material, such as a material with a high light absorption rate or a material with a high light reflectivity.

[0183] The rear light blocking section (220) may be included in the aforementioned light blocking section (120).

[0184] According to one embodiment, the slit layer (100) may include a front slit layer (300). The front slit layer (300) may be positioned between the rear slit layer (200) and the multi-view lens (40). The front slit layer (300) may be positioned adjacent to the rear slit layer (200) in a first direction (Z). The front slit layer (300) may be stacked with the rear slit layer (200) in the first direction (Z). The front slit layer (300) may be positioned on one side facing the multi-view lens (40) of the rear slit layer (200). The front slit layer (300) may be positioned in front of the rear slit layer (200).

[0185] In various embodiments, the front slit layer (300) may be attached to the rear slit layer (200) by various fixing methods such as adhesive or screw fastening. For example, a light-transmitting adhesive layer (ad) may be placed between the rear slit layer (200) and the front slit layer (300), and the front slit layer (300) may be attached to the rear slit layer (200) by the light-transmitting adhesive layer (ad). For example, the front slit layer (300) may be attached to the incident surface (41) of the multi-view lens (40) (or a coating layer (400) coated on the incident surface (41), described later) by the light-transmitting adhesive layer (ad).

[0186] For example, the front slit layer (300) may have the form of a thin film.

[0187] The front slit layer (300) may include a plurality of front slits (310) arranged to transmit at least a portion of the light that has passed through the plurality of rear slits (210). Each of the plurality of front slits (310) may have a shape in which a portion of the front slit layer (300) is penetrated so that light can pass through.

[0188] According to one embodiment, a plurality of front slits (310) may correspond one-to-one with a plurality of rear slits (210).

[0189] According to one embodiment, a plurality of front slits (310) may include a first front slit (311) configured to transmit at least a portion of light emitted from a first light source (30A) and transmitted through a first rear slit (211). The first front slit (311) may be configured to transmit light transmitted through the first rear slit (211) to a width less than or equal to a predetermined width. The first front slit (311) may be configured to transmit at least a portion of light transmitted through the first rear slit (211) along a predetermined direction and path. The first front slit (311) may be positioned between the first rear slit (211) and the first lens (40A). For example, the first front slit (311) may be positioned between the first rear slit (211) and the first lens slit (411) to be described later. For example, the first front slit (311) can be positioned in front of the first rear slit (211).

[0190] According to one embodiment, the width of the first front slit (311) may be smaller than the width of the opening (32a) of the light source case (32) included in the first light source (30A). For example, the width of the first front slit (311) in the second direction (X) may be smaller than the width of the opening (32a) of the light source case (32) included in the first light source (30A) in the second direction (X).

[0191] For example, the width of the first front slit (311) may be approximately the same as or smaller than the width of the first rear slit (211), but embodiments of the present disclosure are not limited thereto.

[0192] According to one embodiment, the first front slit (311) may have a rectangular shape in which the width in the second direction (X) is less than or equal to the width in the third direction (Y). However, the shape of the first front slit (311) is not limited thereto, and in various embodiments, the first front slit (311) may have various shapes.

[0193] The first front slit (311) may be included in the first slit (111) described above.

[0194] According to one embodiment, a plurality of front slits (310) may include a second front slit (312) configured to transmit at least a portion of the light emitted from the second light source (30B) and transmitted through the second rear slit (212). The second front slit (312) may be configured to transmit the light transmitted through the second rear slit (212) to a width less than or equal to a predetermined width. The second front slit (312) may be configured to transmit at least a portion of the light transmitted through the second rear slit (212) along a predetermined direction and path. The second front slit (312) may be positioned between the second rear slit (212) and the second lens (40B). For example, the second front slit (312) may be positioned between the second rear slit (212) and the second lens slit (412) to be described later. For example, the second front slit (312) can be positioned in front of the second rear slit (212).

[0195] According to one embodiment, the width of the second front slit (312) may be smaller than the width of the opening (32a) of the light source case (32) included in the second light source (30B). For example, the width of the second front slit (312) in the second direction (X) may be smaller than the width of the opening (32a) of the light source case (32) included in the second light source (30B) in the second direction (X).

[0196] For example, the width of the second front slit (312) may be approximately the same as or smaller than the width of the second rear slit (212), but embodiments of the present disclosure are not limited thereto.

[0197] According to one embodiment, the second front slit (312) may have a rectangular shape in which the width in the second direction (X) is less than or equal to the width in the third direction (Y). However, the shape of the second front slit (312) is not limited thereto, and in various embodiments, the second front slit (312) may have various shapes.

[0198] The second front slit (312) may be included in the aforementioned second slit (112).

[0199] According to one embodiment, a plurality of front slits (310) may include a third front slit (313) configured to transmit at least a portion of the light emitted from a third light source (30C) and transmitted through a third rear slit (213). The third front slit (313) may be configured to transmit the light transmitted through the third rear slit (213) to a width less than or equal to a predetermined width. The third front slit (313) may be configured to transmit at least a portion of the light transmitted through the third rear slit (213) along a predetermined direction and path. The third front slit (313) may be positioned between the third rear slit (213) and the third lens (40C). For example, the third front slit (313) may be positioned between the third rear slit (213) and the third lens slit (413) to be described later. For example, the third front slit (313) can be positioned in front of the third rear slit (213).

[0200] According to one embodiment, the width of the third front slit (313) may be smaller than the width of the opening (32a) of the light source case (32) included in the third light source (30C). For example, the width of the third front slit (313) in the second direction (X) may be smaller than the width of the opening (32a) of the light source case (32) included in the third light source (30C) in the second direction (X).

[0201] For example, the width of the third front slit (313) may be approximately the same as or smaller than the width of the third rear slit (213), but embodiments of the present disclosure are not limited thereto.

[0202] According to one embodiment, the third front slit (313) may have a rectangular shape in which the width in the second direction (X) is less than or equal to the width in the third direction (Y). However, the shape of the third front slit (313) is not limited thereto, and in various embodiments, the third front slit (313) may have various shapes.

[0203] The third front slit (313) may be included in the aforementioned third slit (113).

[0204] The front slit layer (300) may include a front light blocking portion (320). The front light blocking portion (320) may be provided to block at least a portion of the light that has passed through a plurality of rear slits (210). The front light blocking portion (320) may be positioned around the perimeter of a plurality of front slits (310). The front light blocking portion (320) may include a light-blocking material, such as a material with a high light absorption rate or a material with a high light reflectivity.

[0205] The front light blocking part (320) may be included in the light blocking part (120) described above.

[0206] In order to prevent crosstalk between multiple viewpoints (VA, VB, VC), the direction of propagation of light emitted from each of the multiple light sources (30A, 30B, 30C), passing through the corresponding rear slit (210) and front slit (310) and entering the multiple lenses (40A, 40B, 40C) can be set in various ways.

[0207] According to one embodiment, the direction from the first rear slit (211) toward the first front slit (311) and the direction from the second rear slit (212) toward the second front slit (312) may be different from each other. The extension direction of the first slit centerline (SL1) passing through the center of the first rear slit (211) and the center of the first front slit (311) and the extension direction of the second slit centerline (SL2) passing through the center of the second rear slit (212) and the center of the second front slit (312) may be different from each other (see FIG. 9). Due to such a structure, the direction of propagation of light sequentially passing through the first rear slit (211) and the first front slit (311) and the direction of propagation of light sequentially passing through the second rear slit (212) and the second front slit (312) may be different from each other.

[0208] According to one embodiment, the direction from the second rear slit (212) toward the second front slit (312) and the direction from the third rear slit (213) toward the third front slit (313) may be different from each other. The extension direction of the second slit centerline (SL2) passing through the center of the second rear slit (212) and the center of the second front slit (312) and the extension direction of the third slit centerline (SL3) passing through the center of the third rear slit (213) and the center of the third front slit (313) may be different from each other (see FIG. 9). Due to such a structure, the direction of propagation of light sequentially passing through the second rear slit (212) and the second front slit (312) and the direction of propagation of light sequentially passing through the third rear slit (213) and the third front slit (313) may be different from each other.

[0209] According to one embodiment, the direction from the first rear slit (211) toward the first front slit (311) and the direction from the third rear slit (213) toward the third front slit (313) may be different from each other. The extension direction of the first slit centerline (SL1) passing through the center of the first rear slit (211) and the center of the first front slit (311) and the extension direction of the third slit centerline (SL3) passing through the center of the third rear slit (213) and the center of the third front slit (313) may be different from each other (see FIG. 9). Due to such a structure, the direction of propagation of light sequentially passing through the first rear slit (211) and the first front slit (311) and the direction of propagation of light sequentially passing through the third rear slit (213) and the third front slit (313) may be different from each other.

[0210] According to one embodiment, at least some of the plurality of slits (110) may be extended in a direction inclined with respect to a first direction (Z), which is the direction in which the rear slit layer (200) and the front slit layer (300) are stacked. According to one embodiment, at least some of the plurality of slits (110) may be inclined with respect to a straight line passing through the center of a corresponding light source (30) among the plurality of light sources (30) in the first direction (Z).

[0211] According to one embodiment, the extension direction of the first slit (110) may be inclined with respect to the first direction (Z). The first slit centerline (SL1) passing through the center of the first rear slit (211) and the center of the first front slit (311) may be inclined with respect to the first direction (Z). The first slit centerline (SL1) passing through the center of the first rear slit (211) and the center of the first front slit (311) may be inclined with respect to the first light source centerline (LL1) passing through the center of the first light source (30A) in the first direction (Z). A portion of the first rear slit (211) may overlap with a portion of the first front slit (311) in the first direction (Z). The other part of the first rear slit (211) that does not overlap with the first front slit (311) may be covered by overlapping with a part of the front light blocking section (320) in the first direction (Z). The other part of the first front slit (311) that does not overlap with the first rear slit (211) may be covered by overlapping with a part of the rear light blocking section (220) in the first direction (Z).

[0212] As illustrated in FIGS. 8 and 9, the first slit centerline (SL1) passing through the center of the first rear slit (211) and the center of the first front slit (311) may increase in distance from the first point of view (VA) to the second direction (X) as the distance from the first light source (30A) to the first direction (Z) increases. The first slit centerline (SL1) passing through the center of the first rear slit (211) and the center of the first front slit (311) may increase in distance from the second light source centerline (LL2) passing through the center of the second light source (30B) to the first direction (Z) to the second direction (X) as the distance from the first light source (30A) to the first direction (Z) increases. The distance in the second direction (X) between the center of the second light source centerline (LL2) and the center of the first front slit (311) may be greater than the distance in the second direction (X) between the center of the second light source centerline (LL2) and the center of the first rear slit (211).

[0213] According to one embodiment, the third slit centerline (SL3) passing through the center of the third rear slit (213) and the center of the third front slit (313) may be inclined with respect to the first direction (Z). The third slit centerline (SL3) passing through the center of the third rear slit (213) and the center of the third front slit (313) may be inclined with respect to the third light source centerline (LL3) passing through the center of the third light source (30C) in the first direction (Z).

[0214] As illustrated in FIGS. 8 and 9, the third slit centerline (SL3) passing through the center of the third rear slit (213) and the center of the third front slit (313) may increase in distance from the third viewpoint (VC) to the second direction (X) as the distance from the third light source (30C) to the first direction (Z) increases. The third slit centerline (SL3) passing through the center of the third rear slit (213) and the center of the third front slit (313) may increase in distance from the second light source centerline (LL2) passing through the center of the second light source (30B) to the first direction (Z) as the distance from the third light source (30C) to the second direction (X) increases. The distance in the second direction (X) between the center of the second light source centerline (LL2) and the center of the third front slit (313) may be greater than the distance in the second direction (X) between the center of the second light source centerline (LL2) and the center of the third rear slit (213).

[0215] According to one embodiment, some of the plurality of slits (110) may extend in a first direction (Z). According to one embodiment, some of the plurality of slits (110) may be parallel to a straight line passing through the center of a corresponding light source (30) among the plurality of light sources (30) in the first direction (Z).

[0216] According to one embodiment, a second slit centerline (SL2) passing through the center of the second rear slit (212) and the center of the second front slit (312) may be extended in a first direction (Z). For example, the second slit centerline (SL2) passing through the center of the second rear slit (212) and the center of the second front slit (312) may be parallel to a second light source centerline (LL2) passing through the center of the second light source (30B) in the first direction (Z). For example, the second slit centerline (SL2) passing through the center of the second rear slit (212) and the center of the second front slit (312) may coincide with the second light source centerline (LL2).

[0217] The distance between the first front slit (311) and the second front slit (312) may be greater than the distance between the first rear slit (211) and the second rear slit (212).

[0218] The distance between the second front slit (312) and the third front slit (313) may be greater than the distance between the second rear slit (212) and the third rear slit (213).

[0219] The distance between the first front slit (311) and the third front slit (313) may be greater than the distance between the first rear slit (211) and the third rear slit (213).

[0220] According to the embodiment described above, as shown in FIGS. 8 and 9, the first slit centerline (SL1), the second slit centerline (SL2), and the third slit centerline (SL3) can be extended in different directions.

[0221] However, the direction of each of the straight line passing through the center of the first rear slit (211) and the center of the first front slit (311) (e.g., first slit center line (SL1)), the straight line passing through the center of the second rear slit (212) and the center of the second front slit (312) (e.g., second slit center line (SL2)), and the straight line passing through the center of the third rear slit (213) and the center of the third front slit (313) (e.g., third slit center line (SL3)) is not limited to what has been described above, and in various embodiments, the above straight lines may be extended in various directions.

[0222] According to an embodiment of the present disclosure, the slit layer (100) may include a coating layer (400). The coating layer (400) may be disposed between the multi-view lens (40) and the front slit layer (300). The coating layer (400) may be disposed adjacent to the front slit layer (300) in a first direction (Z). The coating layer (400) may be disposed on one side of the front slit layer (300) facing the multi-view lens (40). The coating layer (400) may be disposed on the incident surface (41) of the multi-view lens (40).

[0223] The coating layer (400) can be formed by coating the incident surface (41) of the multi-view lens (40). For example, the coating layer (400) can be formed by coating a light-blocking material on a portion of the incident surface (41) of the multi-view lens (40).

[0224] In various embodiments, the coating layer (400) may be bonded to the front slit layer (300) by various fixing methods such as adhesive bonding or screw fastening. For example, a transparent adhesive layer (ad) may be disposed between the front slit layer (300) and the coating layer (400), and the front slit layer (300) may be attached to the front slit layer (300) by the transparent adhesive layer (ad).

[0225] The coating layer (400) may be configured to limit the width of the light that passes through the coating layer (400) and enters the incident surface (41) of the multi-view lens (40) among the light that passes through the front slit layer (300) to a predetermined width or less. The coating layer (400) may be configured to control the direction and path of the light that passes through the coating layer (400) and enters the incident surface (41) of the multi-view lens (40) among the light that passes through the front slit layer (300) to a predetermined direction and path.

[0226] The coating layer (400) may include a plurality of lens slits (410) arranged to transmit at least a portion of the light that has passed through a plurality of front slits (310). Each of the plurality of lens slits (410) may have a shape in which a portion of the coating layer (400) is penetrated so that light can be transmitted.

[0227] According to one embodiment, a plurality of lens slits (410) may correspond one-to-one with a plurality of front slits (310).

[0228] According to one embodiment, a plurality of lens slits (410) may include a first lens slit (411) configured to transmit at least a portion of light emitted from a first light source (30A) and transmitted through a first rear slit (211) and a first front slit (311). The first lens slit (411) may be configured to transmit light transmitted through the first front slit (311) to a width less than or equal to a predetermined width. The first lens slit (411) may be configured to transmit at least a portion of light transmitted through the first front slit (311) along a predetermined direction and path. The first lens slit (411) may be positioned between the first front slit (311), the first rear slit (211), and the first lens (40A). For example, the first lens slit (411) may be positioned in front of the first front slit (311).

[0229] According to one embodiment, the width of the first lens slit (411) may be smaller than the width of the opening (32a) of the light source case (32) included in the first light source (30A). For example, the width of the first lens slit (411) in the second direction (X) may be smaller than the width of the opening (32a) of the light source case (32) included in the first light source (30A) in the second direction (X).

[0230] For example, the width of the first lens slit (411) may be approximately the same as or smaller than the width of the first front slit (311), but embodiments of the present disclosure are not limited thereto.

[0231] According to one embodiment, the first lens slit (411) may have a rectangular shape in which the width in the second direction (X) is less than or equal to the width in the third direction (Y). However, the shape of the first lens slit (411) is not limited thereto, and in various embodiments, the first lens slit (411) may have various shapes.

[0232] The first lens slit (411) may be included in the first slit (111) described above.

[0233] According to one embodiment, a plurality of lens slits (410) may include a second lens slit (412) configured to transmit at least a portion of the light emitted from the second light source (30B) and transmitted through the second rear slit (212) and the second front slit (312). The second lens slit (412) may be configured to transmit the light transmitted through the second front slit (312) to a width less than or equal to a predetermined width. The second lens slit (412) may be configured to transmit at least a portion of the light transmitted through the second front slit (312) along a predetermined direction and path. The second lens slit (412) may be positioned between the second front slit (312) and the second lens (40B). For example, the second lens slit (412) may be positioned in front of the second front slit (312).

[0234] According to one embodiment, the width of the second lens slit (412) may be smaller than the width of the opening (32a) of the light source case (32) included in the second light source (30B). For example, the width of the second lens slit (412) in the second direction (X) may be smaller than the width of the opening (32a) of the light source case (32) included in the second light source (30B) in the second direction (X).

[0235] For example, the width of the second lens slit (412) may be approximately the same as or smaller than the width of the second front slit (312), but embodiments of the present disclosure are not limited thereto.

[0236] According to one embodiment, the second lens slit (412) may have a rectangular shape in which the width in the second direction (X) is less than or equal to the width in the third direction (Y). However, the shape of the second lens slit (412) is not limited thereto, and in various embodiments, the second lens slit (412) may have various shapes.

[0237] The second lens slit (412) may be included in the aforementioned second slit (112).

[0238] According to one embodiment, a plurality of lens slits (410) may include a third lens slit (413) configured to transmit at least a portion of the light emitted from a third light source (30C) and transmitted through a third rear slit (213) and a third front slit (313). The third lens slit (413) may be configured to transmit the light transmitted through the third front slit (313) to a width less than or equal to a predetermined width. The third lens slit (413) may be configured to transmit at least a portion of the light transmitted through the third front slit (313) along a predetermined direction and path. The third lens slit (413) may be positioned between the third front slit (313) and the third lens (40C). For example, the third lens slit (413) may be positioned in front of the third front slit (313).

[0239] According to one embodiment, the width of the third lens slit (413) may be smaller than the width of the opening (32a) of the light source case (32) included in the third light source (30C). For example, the width of the third lens slit (413) in the second direction (X) may be smaller than the width of the opening (32a) of the light source case (32) included in the third light source (30C) in the second direction (X).

[0240] For example, the width of the third lens slit (413) may be approximately the same as or smaller than the width of the third front slit (313), but embodiments of the present disclosure are not limited thereto.

[0241] According to one embodiment, the third lens slit (413) may have a rectangular shape in which the width in the second direction (X) is less than or equal to the width in the third direction (Y). However, the shape of the third lens slit (413) is not limited thereto, and in various embodiments, the third lens slit (413) may have various shapes.

[0242] The third lens slit (413) may be included in the aforementioned third slit (113).

[0243] The coating layer (400) may include a lens light blocking portion (420) coated on the incident surface (41) of the multi-view lens (40). The lens light blocking portion (420) may be provided to block at least a portion of the light transmitted through a plurality of front slits (310). The lens light blocking portion (420) may be positioned around the perimeter of the plurality of lens slits (410). The lens light blocking portion (420) may include a light-blocking material.

[0244] According to one embodiment, the lens light blocking portion (420) may have a material with a high light absorption rate to absorb at least a portion of the light transmitted through a plurality of front slits (310). For example, the lens light blocking portion (420) may have a black color. For example, the lens light blocking portion (420) may include a black coating layer. The black coating layer may be formed by coating the incident surface (41) of the multi-view lens (40) by various coating methods, such as printing or sputtering black paint.

[0245] According to one embodiment, the lens light blocking portion (420) may include a material with high light reflectivity to reflect at least a portion of the light transmitted through a plurality of front slits (310). For example, the lens light blocking portion (420) may include a reflective layer formed by coating a material with high light reflectivity. The reflective layer may be formed by coating the incident surface (41) of the multi-view lens (40) by various coating methods, such as printing or sputtering a white-based paint or a metal material with high reflectivity.

[0246] The lens light blocking part (420) may be included in the light blocking part (120) described above.

[0247] As described above, in order to prevent crosstalk between multiple viewpoints (VA, VB, VC), the direction of propagation of light emitted from each of the multiple light sources (30A, 30B, 30C), passing through the corresponding rear slit (210), front slit (310), and lens slit (410) and entering the multiple lenses (40A, 40B, 40C) can be set in various ways.

[0248] According to one embodiment, the direction from the first rear slit (211) through the first front slit (311) to the first lens slit (411) and the direction from the second rear slit (212) through the second front slit (312) to the second lens slit (412) may be different from each other. The extension direction of the first slit center line (SL1) passing through the center of the first front slit (311) and the center of the first lens slit (411) and the extension direction of the second slit center line (SL2) passing through the center of the second front slit (312) and the center of the second lens slit (412) may be different from each other (see FIG. 9). Due to this structure, the direction of light propagating through the first rear slit (211), the first front slit (311), and the first lens slit (411) sequentially and the direction of light propagating through the second rear slit (212), the second front slit (312), and the second lens slit (412) sequentially may be different from each other.

[0249] According to one embodiment, the direction from the second rear slit (212) through the second front slit (312) to the second lens slit (412) and the direction from the third rear slit (213) through the third front slit (313) to the third lens slit (413) may be different from each other. The extension direction of the second slit center line (SL2) passing through the center of the second front slit (312) and the center of the second lens slit (412) and the extension direction of the third slit center line (SL3) passing through the center of the third front slit (313) and the center of the third lens slit (413) may be different from each other (see FIG. 9). Due to this structure, the direction of light propagating through the second rear slit (212), the second front slit (312), and the second lens slit (412) in sequence and the direction of light propagating through the third rear slit (213), the third front slit (313), and the third lens slit (413) in sequence may be different from each other.

[0250] According to one embodiment, the direction from the first rear slit (211) through the first front slit (311) to the first lens slit (411) and the direction from the third rear slit (213) through the third front slit (313) to the third lens slit (413) may be different from each other. The extension direction of the first slit center line (SL1) passing through the center of the first front slit (311) and the center of the first lens slit (411) and the extension direction of the third slit center line (SL3) passing through the center of the third front slit (313) and the center of the third lens slit (413) may be different from each other (see FIG. 9). Due to this structure, the direction of light propagating through the first rear slit (211), the first front slit (311), and the first lens slit (411) in sequence and the direction of light propagating through the third rear slit (213), the third front slit (313), and the third lens slit (413) in sequence may be different from each other.

[0251] As described above, according to one embodiment, at least some of the plurality of slits (110) may extend in a direction inclined with respect to a first direction (Z) in which the front slit layer (300) and the coating layer (400) face each other. For example, a first slit centerline (SL1) passing through the center of the first front slit (311) and the center of the first lens slit (411) may be inclined with respect to the first direction (Z). A first slit centerline (SL1) passing through the center of the first front slit (311) and the center of the first lens slit (411) may be inclined with respect to a first light source centerline (LL1) passing through the center of the first light source (30A) in the first direction (Z). A portion of the first front slit (311) may overlap with a portion of the first lens slit (411) in the first direction (Z). The other part of the first front slit (311) that does not overlap with the first lens slit (411) may be covered by overlapping with a part of the lens light blocking portion (420) in the first direction (Z). The other part of the first lens slit (411) that does not overlap with the first front slit (311) may be covered by overlapping with a part of the front light blocking portion (320) in the first direction (Z).

[0252] As illustrated in FIGS. 8 and 9, the first slit center line (SL1) passing through the center of the first front slit (311) and the center of the first lens slit (411) may increase in distance from the first viewpoint (VA) to the second direction (X) as the distance from the first light source (30A) to the first direction (Z) increases. The first slit center line (SL1) passing through the center of the first front slit (311) and the center of the first lens slit (411) may increase in distance from the second light source center line (LL2) passing through the center of the second light source (30B) to the second direction (X) as the distance from the first light source (30A) to the first direction (Z) increases. The distance in the second direction (X) between the center of the second light source centerline (LL2) and the center of the first lens slit (411) may be greater than the distance in the second direction (X) between the center of the second light source centerline (LL2) and the center of the first front slit (311).

[0253] According to one embodiment, the third slit centerline (SL3) passing through the center of the third front slit (313) and the center of the third lens slit (413) may be inclined with respect to the first direction (Z). The third slit centerline (SL3) passing through the center of the third front slit (313) and the center of the third lens slit (413) may be inclined with respect to the third light source centerline (LL3) passing through the center of the third light source (30C) in the first direction (Z).

[0254] As illustrated in FIGS. 8 and 9, the third slit centerline (SL3) passing through the center of the third front slit (313) and the center of the third lens slit (413) may increase in distance from the third viewpoint (VC) to the second direction (X) as the distance from the third light source (30C) to the first direction (Z) increases. The third slit centerline (SL3) passing through the center of the third front slit (313) and the center of the third lens slit (413) may increase in distance from the second light source centerline (LL2) passing through the center of the second light source (30B) to the first direction (Z) as the distance from the third light source (30C) to the second direction (X) increases. The distance in the second direction (X) between the center of the second light source centerline (LL2) and the center of the third lens slit (413) may be greater than the distance in the second direction (X) between the center of the second light source centerline (LL2) and the center of the third front slit (313).

[0255] According to one embodiment, a second slit centerline (SL2) passing through the center of the second front slit (312) and the center of the second lens slit (412) may be extended in a first direction (Z). For example, the second slit centerline (SL2) passing through the center of the second front slit (312) and the center of the second lens slit (412) may be parallel to a second light source centerline (LL2) passing through the center of the second light source (30B) in the first direction (Z). For example, the second slit centerline (SL2) passing through the center of the second front slit (312) and the center of the second lens slit (412) may coincide with the second light source centerline (LL2).

[0256] The distance between the first lens slit (411) and the second lens slit (412) may be greater than the distance between the first front slit (311) and the second front slit (312).

[0257] The distance between the second lens slit (412) and the third lens slit (413) may be greater than the distance between the second front slit (312) and the third front slit (313).

[0258] The distance between the first lens slit (411) and the third lens slit (413) may be greater than the distance between the first front slit (311) and the third front slit (313).

[0259] FIG. 9 illustrates an embodiment in which a straight line passing through the center of the first rear slit (211) and the center of the first front slit (311) coincides with a straight line passing through the center of the first front slit (311) and the center of the first lens slit (411) (e.g., the first slit centerline (SL1)). However, embodiments of the present disclosure are not limited thereto, and the two straight lines above may not coincide with each other and may be inclined.

[0260] FIG. 9 illustrates an embodiment in which a straight line passing through the center of the second rear slit (212) and the center of the second front slit (312) coincides with a straight line passing through the center of the second front slit (312) and the center of the second lens slit (412) (e.g., second slit center line (SL2)). However, embodiments of the present disclosure are not limited thereto, and the two straight lines above may not coincide with each other and may be inclined.

[0261] FIG. 9 illustrates an embodiment in which a straight line passing through the center of the third rear slit (213) and the center of the third front slit (313) coincides with a straight line passing through the center of the third front slit (313) and the center of the third lens slit (413) (e.g., third slit centerline (SL3)). However, embodiments of the present disclosure are not limited thereto, and the two straight lines above may not coincide with each other and may be inclined.

[0262] As described above, in various embodiments of the present disclosure, some of the slits (110) among the plurality of slits (110) may extend in different directions. According to various embodiments of the present disclosure, some of the slits (110) corresponding to different time points (V) among the plurality of slits (110) may extend in different directions. For example, the first slit (111) and the second slit (112) may extend in different directions. For example, the second slit (112) and the third slit (113) may extend in different directions. For example, the first slit (111) and the third slit (113) may extend in different directions. By such a structure of the slit layer (100), the propagation direction and path of light emitted from the plurality of light sources (30) can be controlled in various ways.

[0263] With reference to FIG. 10, an embodiment compared with the embodiment of the present disclosure described with reference to FIG. 1 to FIG. 9 will be described.

[0264] Referring to FIG. 10, according to a comparative embodiment, a slit layer is not provided between a plurality of light sources (30) and a multi-view lens (40-1) to limit the width of light emitted from a plurality of light sources (30) and to control the direction and path of light propagation to a predetermined direction and path.

[0265] Under the structure of such a comparative embodiment, light emitted from each of the plurality of light sources (30) can travel with a relatively wide width and be incident on the incident surface (41-1) of the multi-view lens (40-1). Additionally, under the structure of such a comparative embodiment, light emitted from each of the plurality of light sources (30) can be incident on the incident surface (41-1) without the travel direction and path being controlled to a predetermined direction and path. Subsequently, the light emitted from the exit surface (42-1) of the multi-view lens (40-1) may travel not only to the corresponding viewpoint (V) but also to other viewpoints (V), and in this case, a problem may occur in which the light overlaps in the viewing area and crosstalk occurs. For example, as shown in FIG. 10, a portion of the light emitted from the first light source (30A) may be incident not only at the first time point (VA) but also at the second time point (VB) or the third time point (VC), a portion of the light emitted from the second light source (30B) may be incident not only at the second time point (VB) but also at the first time point (VA) or the third time point (VC), and a portion of the light emitted from the third light source (30C) may be incident not only at the third time point (VC) but also at the first time point (VA) or the second time point (VB).

[0266] However, as illustrated in FIG. 9, in an embodiment of the present disclosure, crosstalk can be more efficiently reduced and / or prevented by controlling the width or path of light incident on the multi-view lens (40) using a slit layer (100).

[0267] FIG. 11 is a cross-sectional view illustrating a light source array, a slit layer, and a multi-view lens of a display device according to one embodiment of the present disclosure.

[0268] In describing an embodiment of the present disclosure with reference to FIG. 11, the same reference numerals are used for components identical to those described with reference to FIG. 1 to FIG. 9, and detailed descriptions may not be repeated.

[0269] Referring to FIG. 11, a slit layer (100) included in a display device (1) according to one embodiment of the present disclosure may include a rear slit layer (200) and a coating layer (400).

[0270] Compared to the embodiment described with reference to FIGS. 1 to 9, the slit layer (100) according to the embodiment of FIG. 11 may have a rear slit layer (200) composed of a single layer attached to a coating layer (400) coated on the incident surface (41) of a multi-view lens (40).

[0271] The rear slit layer (200) can be attached to the coating layer (400). For example, the rear slit layer (200) can be attached to the coating layer (400) by a transparent adhesive layer (ad) provided between the rear slit layer (200) and the coating layer (400).

[0272] The rear slit layer (200) may include a first rear slit (211) provided to transmit at least a portion of the light emitted from the first light source (30A). The coating layer (400) may include a first lens slit (411) provided to transmit at least a portion of the light transmitted through the first rear slit (211) to the first lens (40A). The first rear slit (211) and the first lens slit (411) may be connected to each other. The first rear slit (211) and the first lens slit (411) may be included in the first slit (111).

[0273] The rear slit layer (200) may include a second rear slit (212) provided to transmit at least a portion of the light emitted from the second light source (30B). The coating layer (400) may include a second lens slit (412) provided to transmit at least a portion of the light transmitted through the second rear slit (212) to the second lens (40B). The second rear slit (212) and the second lens slit (412) may be connected to each other. The second rear slit (212) and the second lens slit (412) may be included in the second slit (112).

[0274] The rear slit layer (200) may include a third rear slit (213) provided to transmit at least a portion of the light emitted from the third light source (30C). The coating layer (400) may include a third lens slit (413) provided to transmit at least a portion of the light transmitted through the third rear slit (213) to the third lens (40C). The third rear slit (213) and the third lens slit (413) may be connected to each other. The third rear slit (213) and the third lens slit (413) may be included in the third slit (113).

[0275] The extension directions of the first slit (111), the second slit (112), and the third slit (113), respectively, correspond to those described with reference to FIGS. 8 and FIGS. 9, so a detailed description is omitted below.

[0276] With a structure such as that shown in FIG. 11, the slit layer (100) can control the width or path of light incident on the multi-view lens (40), thereby allowing crosstalk between multiple viewpoints (V) to be reduced and / or prevented more efficiently.

[0277] FIG. 12 is a cross-sectional view illustrating a light source array, a slit layer, and a multi-view lens of a display device according to one embodiment of the present disclosure.

[0278] In describing an embodiment of the present disclosure with reference to FIG. 12, the same reference numerals are assigned to components identical to those described with reference to FIG. 1 to FIG. 9, and detailed descriptions may not be repeated.

[0279] Referring to FIG. 12, a slit layer (100) included in a display device (1) according to one embodiment of the present disclosure may include a rear slit layer (200) and a front slit layer (300).

[0280] Compared to the embodiment described with reference to FIGS. 1 to 9, the slit layer (100) according to the embodiment of FIG. 12 may have a front slit layer (300) and a rear slit layer (200) in the form of a thin film directly attached to the incident surface (41) of the multi-view lens (40).

[0281] For example, the front slit layer (300) and the rear slit layer (200) can be attached to the incident surface (41) by a transparent adhesive layer (ad) provided between the front slit layer (300) and the incident surface (41).

[0282] The rear slit layer (200) and the front slit layer (300) can be attached to each other by a transparent adhesive layer (ad) provided between the rear slit layer (200) and the front slit layer (300).

[0283] The rear slit layer (200) may include a first rear slit (211) provided to transmit at least a portion of the light emitted from the first light source (30A). The front slit layer (300) may include a first front slit (311) provided to transmit at least a portion of the light transmitted through the first rear slit (211) to the first lens (40A). The first rear slit (211) and the first front slit (311) may be connected to each other. The first rear slit (211) and the first front slit (311) may be included in the first slit (111).

[0284] The rear slit layer (200) may include a second rear slit (212) provided to transmit at least a portion of the light emitted from the second light source (30B). The front slit layer (300) may include a second front slit (312) provided to transmit at least a portion of the light transmitted through the second rear slit (212) to the second lens (40B). The second rear slit (212) and the second front slit (312) may be connected to each other. The second rear slit (212) and the second front slit (312) may be included in the second slit (112).

[0285] The rear slit layer (200) may include a third rear slit (213) arranged to transmit at least a portion of the light emitted from the third light source (30C). The front slit layer (300) may include a third front slit (313) arranged to transmit at least a portion of the light transmitted through the third rear slit (213) to the third lens (40C). The third rear slit (213) and the third front slit (313) may be connected to each other. The third rear slit (213) and the third front slit (313) may be included in the third slit (113).

[0286] The extension directions of the first slit (111), the second slit (112), and the third slit (113), respectively, correspond to those described with reference to FIGS. 8 and FIGS. 9, so a detailed description is omitted below.

[0287] With a structure such as that shown in FIG. 12, the slit layer (100) can control the width or path of light incident on the multi-view lens (40), thereby allowing crosstalk between multiple viewpoints (V) to be reduced and / or prevented more efficiently.

[0288] In the above description, with reference to FIGS. 1 to 12, an embodiment has been described in which the rear slit layer (200), the front slit layer (300), and the coating layer (400), which are components of the slit layer (100), are formed as separate components and combined with each other.

[0289] However, the embodiments of the present disclosure are not limited thereto, and according to various embodiments, the slit layer (100) may be formed as a whole without distinction between the rear slit layer (200), the front slit layer (300), and the coating layer (400). For example, the integrated slit layer (100) may have the form of a relatively thick film or plate and may be attached to the incident surface (41) of the multi-view lens (40). For example, the integrated slit layer (100) may be formed by applying a light-blocking material thickly to the incident surface (41) of the multi-view lens (40) by means such as paint coating or sputtering.

[0290] According to one embodiment of the present disclosure, a display device configured to provide a plurality of images different from a plurality of time points comprises: a first light source arranged to emit light for providing an image at a first time point among the plurality of time points; a second light source disposed adjacent to the first light source and arranged to emit light for providing an image at a second time point different from the first time point among the plurality of time points; a first lens arranged to refract light emitted from the first light source toward the first time point; a second lens disposed adjacent to the first lens and arranged to refract light emitted from the second light source toward the second time point; a rear slit layer comprising a first rear slit disposed between the first light source and the first lens and arranged to transmit at least a portion of the light emitted from the first light source, and a second rear slit disposed between the second light source and the second lens and arranged to transmit at least a portion of the light emitted from the second light source; and a first rear slit disposed between the first rear slit and the first lens and the first rear It may include a front slit layer comprising a first front slit arranged to transmit at least a portion of the light transmitted through the slit toward the first lens, and a second front slit disposed between the second rear slit and the second lens and arranged to transmit at least a portion of the light transmitted through the second rear slit toward the second lens. The direction from the first rear slit toward the first front slit and the direction from the second rear slit toward the second front slit may be different from each other.

[0291] The extension direction of the first slit centerline passing through the center of the first rear slit and the center of the first front slit, and the extension direction of the second slit centerline passing through the center of the second rear slit and the center of the second front slit may be different from each other.

[0292] The slit centerline passing through the center of the first rear slit and the center of the first front slit may be inclined with respect to the first direction in which the rear slit layer and the front slit layer are stacked.

[0293] The distance in the second direction perpendicular to the first direction between the center of the second light source passing through the center of the first light source in the first direction and the center of the first front slit may be greater than the distance in the second direction between the center of the light source and the center of the first rear slit.

[0294] As the distance from the first light source in the first direction increases, the distance from the first point in time to the second direction perpendicular to the first direction may increase.

[0295] The distance between the first front slit and the second front slit may be greater than the distance between the first rear slit and the second rear slit.

[0296] A portion of the first rear slit may overlap with a portion of the first front slit in one direction in which the rear slit layer and the front slit layer are laminated.

[0297] The display device may further include a coating layer disposed on an incident surface facing the front slit layer of each of the first lens and the second lens. The coating layer may be configured to limit the width of the light that passes through the coating layer and is incident on the incident surface among the light that has passed through the front slit to a width less than or equal to a predetermined width.

[0298] The coating layer may include a first lens slit disposed between the first front slit and the first lens and configured to transmit at least a portion of the light transmitted through the first front slit toward the first lens, and a second lens slit disposed between the second front slit and the second lens and configured to transmit at least a portion of the light transmitted through the second front slit toward the second lens.

[0299] The direction from the first rear slit through the first front slit to the first lens slit and the direction from the second rear slit through the second front slit to the second lens slit may be different from each other.

[0300] The slit centerline passing through the center of the first front slit and the center of the first lens slit may be inclined with respect to the direction in which the front slit layer and the coating layer face each other.

[0301] The coating layer may include a light-blocking material configured to block a portion of the light incident on the incident surface of each of the first lens and the second lens.

[0302] The light-blocking material may include ink applied to the incident surface.

[0303] The display device may further include a light-transmitting adhesive layer disposed between the rear slit layer and the front slit layer.

[0304] Each of the first light source and the second light source may include a light-emitting element and a light source case that accommodates the light-emitting element and includes an opening provided on one side so that light emitted from the light-emitting element is transmitted toward the rear slit layer. The width of the first rear slit and the width of the first front slit may each be smaller than the width of the opening of the light source case included in the first light source. The width of the second rear slit and the width of the second front slit may each be smaller than the width of the opening of the light source case included in the second light source.

[0305] A display device according to one embodiment of the present disclosure may include a light source array arranged to emit light for providing different images at a plurality of viewpoints, a multi-view lens arranged adjacently to the light source array in a first direction, and a slit layer arranged between the light source array and the multi-view lens and arranged to block a portion of the light emitted from the light source array. The light source array may include a first light source arranged to emit light for providing an image at a first viewpoint among the plurality of viewpoints, and a second light source arranged adjacently to the first light source and arranged to emit light for providing an image at a second viewpoint different from the first viewpoint among the plurality of viewpoints. The multi-view lens may include a first lens arranged adjacent to the first light source in the first direction and configured to refract light emitted from the first light source toward the first viewpoint, and a second lens arranged adjacent to the second light source in the first direction and adjacent to the first lens in the second direction and configured to refract light emitted from the second light source toward the second viewpoint. The slit layer may include a first slit arranged to transmit a portion of the light emitted from the first light source toward the first lens, and a second slit arranged to transmit a portion of the light emitted from the second light source toward the second lens. The direction in which the first slit extends between the first light source and the first lens may be different from the direction in which the second slit extends between the second light source and the second lens.

[0306] The slit layer may include a rear slit layer disposed adjacent to the light source array in the first direction between the light source array and the multi-view lens, and a front slit layer disposed adjacent to the rear slit layer in the first direction between the rear slit layer and the multi-view lens.

[0307] The first slit may include a first rear slit disposed in the rear slit layer and arranged to transmit a portion of light emitted from the first light source, and a first front slit disposed in the front slit layer and arranged to transmit a portion of light transmitted through the first rear slit toward the first lens. The second slit may include a second rear slit disposed in the rear slit layer and arranged to transmit a portion of light emitted from the second light source, and a second front slit disposed in the front slit layer and arranged to transmit a portion of light transmitted through the second rear slit toward the second lens.

[0308] The direction in which the first slit extends between the first light source and the first lens may be inclined with respect to the first direction.

[0309] A display device according to one embodiment of the present disclosure may include a light source array, a multi-view lens disposed adjacent to the light source array in a first direction, a rear slit layer disposed adjacent to the light source array in the first direction between the light source array and the multi-view lens, and a front slit layer disposed adjacent to the rear slit layer in the first direction between the rear slit layer and the multi-view lens. The light source array may include a plurality of light sources arranged in a second direction different from the first direction, which are provided to emit light for providing different images at a plurality of viewpoints. The multi-view lens may include a plurality of lenses arranged in the second direction, which are provided to refract light emitted from the plurality of light sources toward a corresponding viewpoint among the plurality of viewpoints. The rear slit layer may include a plurality of rear slits arranged to transmit at least a portion of the light emitted from the plurality of light sources. The front slit layer may include a plurality of front slits arranged to transmit at least a portion of the light emitted from the plurality of light sources and transmitted through the plurality of rear slits toward a corresponding lens among the plurality of lenses. A slit centerline connecting the center of at least some of the rear slits among the plurality of rear slits and the center of at least some of the front slits corresponding to at least some of the rear slits among the plurality of front slits may be inclined with respect to the first direction.

[0310] According to the concept of the present disclosure, a display device may provide different images at multiple viewpoints by including a plurality of light sources configured to emit light for providing different images and a multi-view lens disposed in front of the plurality of light sources.

[0311] According to the concept of the present disclosure, a display device may include a slit layer disposed between a plurality of light sources and a multi-view lens to limit the width of light incident on the multi-view lens.

[0312] According to the concept of the present disclosure, a slit layer disposed between a plurality of light sources and a multi-view lens comprises a plurality of slits extending in different directions depending on the viewpoint, so that the path of light incident on the multi-view lens can be controlled.

[0313] According to the concept of the present disclosure, as the width of light incident on a multi-view lens is limited by a slit layer and the light path is controlled, crosstalk can be reduced and / or prevented, thereby reducing image noise and improving image quality.

[0314] According to the concept of the present disclosure, crosstalk can be reduced by limiting the width of light incident on a multi-view lens by a slit layer and controlling the light path, and thus the number of different viewpoints formed in the viewing area can be increased.

[0315] The effects according to the concept of the present disclosure are not limited to the effects mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present invention belongs.

[0316] Specific embodiments have been illustrated and described above. However, the invention is not limited to the embodiments described above, and those skilled in the art may make various modifications without departing from the essence of the technical concept of the invention as described in the following claims.

Claims

1. A display device configured to provide multiple different images at multiple points in time, A first light source configured to emit light for providing an image at a first time point among the plurality of time points above; A second light source disposed adjacent to the first light source and configured to emit light to provide an image at a second time point different from the first time point among the plurality of time points; A first lens configured to refract light emitted from the first light source toward the first viewpoint; A second lens positioned adjacent to the first lens and configured to refract light emitted from the second light source toward the second viewpoint; A rear slit layer comprising: a first rear slit disposed between the first light source and the first lens and configured to transmit at least a portion of light emitted from the first light source; and a second rear slit disposed between the second light source and the second lens and configured to transmit at least a portion of light emitted from the second light source; and A front slit layer comprising: a first front slit disposed between the first rear slit and the first lens and configured to transmit at least a portion of the light transmitted through the first rear slit toward the first lens; and a second front slit disposed between the second rear slit and the second lens and configured to transmit at least a portion of the light transmitted through the second rear slit toward the second lens; A display device in which the direction from the first rear slit to the first front slit and the direction from the second rear slit to the second front slit are different from each other.

2. In Paragraph 1, A display device in which the extension direction of the first slit centerline passing through the center of the first rear slit and the center of the first front slit and the extension direction of the second slit centerline passing through the center of the second rear slit and the center of the second front slit are different from each other.

3. In Paragraph 1, A display device in which a slit centerline passing through the center of the first rear slit and the center of the first front slit is inclined with respect to a first direction in which the rear slit layer and the front slit layer are stacked.

4. In Paragraph 3, A display device in which the distance in the second direction perpendicular to the first direction between the center of the second light source passing through the center of the second light source in the first direction and the center of the first front slit is greater than the distance in the second direction between the center of the light source and the center of the first rear slit.

5. In Paragraph 3, The above slit centerline is a display device in which, as the distance from the first light source in the first direction increases, the distance from the first point in the second direction perpendicular to the first direction increases.

6. In Paragraph 1, A display device in which the distance between the first front slit and the second front slit is greater than the distance between the first rear slit and the second rear slit.

7. In Paragraph 1, A display device in which a portion of the first rear slit overlaps with a portion of the first front slit in one direction in which the rear slit layer and the front slit layer are laminated.

8. In Paragraph 1, It further includes a coating layer disposed on the incident surface facing the front slit layer of each of the first lens and the second lens, and A display device configured such that the coating layer is configured to limit the width of the light that passes through the coating layer and is incident on the incident surface to a predetermined width or less among the light that has passed through the front slit.

9. In Paragraph 8, The above coating layer is, A first lens slit disposed between the first front slit and the first lens and configured to transmit at least a portion of the light transmitted through the first front slit toward the first lens; and A display device comprising: a second lens slit disposed between the second front slit and the second lens and configured to transmit at least a portion of the light transmitted through the second front slit toward the second lens.

10. In Paragraph 9, A display device in which the direction from the first rear slit through the first front slit to the first lens slit and the direction from the second rear slit through the second front slit to the second lens slit are different from each other.

11. In Paragraph 9, A display device in which a slit centerline passing through the center of the first front slit and the center of the first lens slit is inclined with respect to the direction in which the front slit layer and the coating layer face each other.

12. In Paragraph 8, A display device comprising a light-blocking material in which the coating layer is configured to block a portion of the light incident on the incident surface of each of the first lens and the second lens.

13. In Paragraph 12, The light-blocking material above is a display device comprising ink applied to the incident surface.

14. In Paragraph 1, A display device further comprising a light-transmitting adhesive layer disposed between the rear slit layer and the front slit layer.

15. In Paragraph 1, Each of the above first light source and the above second light source is, light-emitting element; and A light source case comprising: a light source case that accommodates the light-emitting element and includes an opening provided on one side so that light emitted from the light-emitting element is transmitted toward the rear slit layer; The width of the first rear slit and the width of the first front slit are each smaller than the width of the opening of the light source case included in the first light source, and A display device in which the width of the second rear slit and the width of the second front slit are each smaller than the width of the opening of the light source case included in the second light source.

Images