Display apparatus

Abstract

This display apparatus comprises: a first light source for emitting light visible from a first viewpoint; a second light source which is arranged in line with the first light source in a first direction and which emits light visible from a second viewpoint that is different from the first viewpoint; and a multiview lens for refracting the light emitted from the first light source toward the first viewpoint and refracting the light emitted from the second light source toward the second viewpoint, wherein each of the first light source and the second light source comprises: a light-emitting element; and a slit cover, which covers a portion of the light-emitting element between the light-emitting element and at least one multiview lens, includes a light source slit having a first width, and has a light source slit allowing the light emitted from the light-emitting element to pass through the light source slit.

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 the user, and is used in various fields such as homes and businesses.

[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 smart phones, tablet PCs, personal digital assistants (PDAs), or cellular phones, various display devices used to play images such as advertisements or movies in industrial settings, and various other types of audio / video systems.

[0004] Display devices include 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 viewing angle by modulating light emitted from external or internal light sources. Holography and stereoscopy are two methods for providing different images depending on the viewing angle.

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

[0007] Stereoscopic method is a method of providing multiple two-dimensional images separated by viewpoint.

[0008] Stereoscopic methods include autostereoscopic methods, which separate images from a display device to form a field of view. Types of autostereoscopic methods include parallax barrier methods, which utilize parallax barriers, and lenticular lens methods.

[0009] The lenticular lens method is a method that refracts light incident from pixels to a lenticular lens and emits it in a desired direction, thereby providing different images at multiple viewpoints.

[0010] A display device having a structure configured to provide different images at multiple points in time is provided.

[0011] Additionally, a display device having a structure configured to narrow the radiation angle of light emitted from a light source is provided.

[0012] In addition, a display device having a structure configured to narrow the width of light incident on a refocusing lens is provided.

[0013] Additionally, a display device having a structure configured to increase the number of different viewpoints formed in a field of view is provided.

[0014] In addition, a display device having a structure configured to reduce image noise and improve image quality is provided.

[0015] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0016] According to one aspect of the present disclosure, a display device may include a first light source configured to emit light viewable from a first point of view, a second light source arranged in a first direction in a line with the first light source and configured to emit light viewable from a second point of view different from the first point of view, and at least one multi-view lens configured to refract light emitted from the first light source to propagate toward the first point of view and to refract light emitted from the second light source to propagate toward the second point of view. Each of the first light source and the second light source may include a light-emitting element, and a slit cover between the light-emitting element and the at least one multi-view lens, the slit cover including a light-source slit having a first width and configured to allow light emitted from the light-emitting element to transmit through the light-source slit.

[0017] The light source slit of each of the slit covers of the first light source and the second light source may extend in a direction orthogonal to the first direction.

[0018] The light source slit of each of the slit covers of the first light source and the second light source may extend in a direction orthogonal to the direction in which the first viewpoint and the second viewpoint are arranged with each other.

[0019] The at least one re-viewing lens may include a plurality of re-viewing lenses. The light source slit of each of the slit covers of the first light source and the second light source may extend in a direction orthogonal to the direction in which the plurality of re-viewing lenses are arranged.

[0020] The light emitting elements of each of the first light source and the second light source may include a first light emitting element configured to emit light of a first color, a second light emitting element configured to emit light of a second color different from the first color, and a third light emitting element configured to emit light of a third color different from the first color and the second color. The direction in which the first light emitting element, the second light emitting element, and the third light emitting element are arranged may be parallel to the direction in which the light source slits of the slit covers of each of the first light source and the second light source extend.

[0021] The display device may further include an incident surface cover disposed between the at least one multi-view lens and the first light source and the second light source, the incident surface cover including a lens slit having a second width. The lens slit may be configured such that light transmitted through the light source slit of one of the first light source or the second light source transmits through the incident surface cover and enters the at least one multi-view lens.

[0022] The above second width may be less than or equal to the above first width.

[0023] The incident surface cover may be disposed on the incident surface of the at least one re-focusing lens. The incident surface of the at least one re-focusing lens may be adjacent to the first light source and the second light source.

[0024] The above incident surface cover may include a light absorbing portion coated on the incident surface of the at least one re-focusing lens.

[0025] The lens slit may include a first lens slit configured to allow at least a portion of light passing through the light source slit of the first light source to transmit through the incident surface cover, and a second lens slit arranged parallel to the first lens slit and configured to allow at least a portion of light passing through the light source slit of the second light source to transmit through the incident surface cover. The center of the light-emitting element of the first light source, the center of the light source slit of the first light source, and the center of the first lens slit may be arranged in a line with each other. The center of the light-emitting element of the second light source, the center of the light source slit of the second light source, and the center of the second lens slit may be arranged in a line with each other.

[0026] Each of the first light source and the second light source may further include a light source case that accommodates the light-emitting element. The slit cover of each of the first light source and the second light source may be provided on one side of the light source case facing the at least one re-focusing lens.

[0027] Each of the first light source and the second light source may further include a transparent resin disposed inside the light source case and enclosing the light-emitting element. The slit cover of each of the first light source and the second light source may cover a portion of the transparent resin on one side of the light-transmitting resin facing the at least one re-focusing lens.

[0028] The slit covers of each of the first light source and the second light source may include a light blocking portion arranged around the periphery of the light source slit and configured to block a portion of light emitted from the light emitting element.

[0029] The light blocking portion of each of the first light source and the second light source may include a black coating layer configured to absorb a portion of light emitted from the light-emitting element.

[0030] The light blocking portion of each of the first light source and the second light source may include a reflective layer configured to reflect a portion of light emitted from the light-emitting element toward the light-emitting element.

[0031] According to one aspect of the present disclosure, a display device may include a first light source configured to emit light viewable from a first viewpoint, a second light source arranged in a first direction in a line with the first light source and configured to emit light to a second viewpoint different from the first viewpoint, and a multi-viewpoint lens including an incident surface provided on one side of a multi-viewpoint lens facing the first light source and the second light source, the incident surface including a first lens slit corresponding to the first light source and a second lens slit corresponding to the second light source. The multi-viewpoint lens may be configured to refract light emitted from the first light source to propagate to the first viewpoint and to refract light emitted from the second light source to propagate to the second viewpoint. Each of the first light source and the second light source may include a light-emitting element and a light source case accommodating the light-emitting element. The light source case may include a slit cover provided on one side of the light source case adjacent to the incident surface of the multi-point lens, the slit cover covering a portion of the light emitting element between the light emitting element and the multi-point lens. The slit cover may include a light source slit having a first width and a plurality of walls surrounding the light emitting element. An inner surface of at least one of the plurality of walls may include an inclined surface, and an inner width of the light source case may increase in a direction away from the light emitting element and toward the slit cover.

[0032] The light source slit of each of the slit covers of the first light source and the second light source may extend in a direction orthogonal to the first direction.

[0033] The light source slit of each of the slit covers of the first light source and the second light source may extend in a direction orthogonal to the direction in which the first viewpoint and the second viewpoint are arranged.

[0034] The above re-pointing lens may include a plurality of re-pointing lenses. The light source slit of the slit cover of each of the first light source and the second light source may extend in a direction orthogonal to the direction in which the plurality of re-pointing lenses are arranged.

[0035] The first lens slit and the second lens slit may include a second width, and the second width may be less than or equal to the first width.

[0036] The above and other aspects and features of specific embodiments of the present disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings.

[0037] FIG. 1 is a perspective view of a display device according to one embodiment of the present disclosure.

[0038] FIG. 2 is a drawing illustrating an image provided from a plurality of viewpoints from a display device according to one embodiment of the present disclosure.

[0039] FIG. 3 is an exploded perspective view showing the components of a display device according to one embodiment of the present disclosure.

[0040] 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.

[0041] FIG. 5 is a perspective view illustrating a light source array and a re-focusing lens of a display device according to one embodiment of the present disclosure.

[0042] FIG. 6 is an enlarged cross-sectional view illustrating a light source array, an incident surface cover, and a re-focusing lens of a display device according to one embodiment of the present disclosure.

[0043] FIG. 7 is a perspective view illustrating a light source of a display device according to one embodiment of the present disclosure.

[0044] FIG. 8 is a front view illustrating a light source of a display device according to one embodiment of the present disclosure.

[0045] FIG. 9 is an enlarged cross-sectional view illustrating a light source and a light source substrate of a display device according to one embodiment of the present disclosure.

[0046] FIG. 10 is an enlarged cross-sectional view illustrating a light source array, an incident surface cover, and a re-focusing lens of a display device according to one embodiment of the present disclosure.

[0047] Fig. 11 is an enlarged cross-sectional view showing a light source array, an incident surface cover, and a re-focusing lens of a display device according to a comparative example.

[0048] FIG. 12 is an enlarged cross-sectional view illustrating a light source array, an incident surface cover, and a re-focusing lens of a display device according to one embodiment of the present disclosure.

[0049] FIG. 13 is an enlarged cross-sectional view illustrating a light source array and a re-focusing lens of a display device according to one embodiment of the present disclosure.

[0050] The embodiments described in this specification and the configurations illustrated in the drawings are merely preferred examples of the disclosed invention, and there may be various modified examples that can replace the embodiments and drawings of this specification at the time of filing of this application.

[0051] Additionally, the same reference numbers or symbols presented in each drawing of this specification represent parts or components that perform substantially the same function.

[0052] 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.

[0053] Additionally, terms including ordinal numbers such as “first,” “second,” etc. used herein may be used to describe various components, but the components are not limited by the terms, and the terms are used only 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 referred to as the second component, and similarly, the second component may also be referred to as the first component. The term “and / or” includes any combination of a plurality of related listed items or any item among a plurality of related listed items.

[0054] The terms 'part, module, element, block' used in the specification may be implemented in software or hardware, and in some embodiments, multiple 'parts, modules, elements, blocks' may be implemented as one component, or one 'part, module, element, block' may include multiple components.

[0055] When an element is referred to as being "connected" to another element, it will be understood that it may be directly or indirectly connected to the other element, where an indirect connection may include "connecting via a wireless communications network."

[0056] In this specification, when a member is "on" another member, this includes not only the form in which the member is in contact with the other member, but also the form in which another member is between the two members.

[0057] As used herein, the expressions “at least one of a, b, or c” and “at least one of a, b, and c” represent “a only,” “b only,” “c only,” “both a and b,” “both a and c,” “both b and c,” and “all a, b, and c.”

[0058] Hereinafter, one or more embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0059] In describing one or more embodiments of the present disclosure with reference to FIGS. 1 to 13, the terms “front-back direction,” “vertical direction,” “horizontal direction (left-right direction),” etc. used in the following description 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, the term “vertical direction” below may mean a direction parallel to the Y direction based on the drawings. For example, the term “horizontal direction (left-right direction)” below may mean a direction parallel to the X direction based on the drawings, respectively.

[0060] FIG. 1 is a perspective view of a display device according to one embodiment of the present disclosure.

[0061] Referring to FIG. 1, a display device (1) according to one or more embodiments of the present disclosure is a device that can process an image signal received from the outside and visually display the processed image.

[0062] For example, the display device (1) can be implemented in various forms such as a television (TV), a monitor which is a type of computer output device, a portable multimedia device, a portable communication device, etc. For example, the display device (1) can be a large format display (LFD) installed outdoors such as a rooftop or a bus stop. Here, outdoors is not necessarily limited to outdoors, and the display device (1) according to various embodiments of the present disclosure can be installed in any place where many people can come and go, such as a subway station, a shopping mall, a movie theater, a company, a store, etc. Even indoors. The type of the display device (1) according to one or more embodiments of the present disclosure is not limited to what has been described above as long as it is a device that visually displays an image.

[0063] For example, the display device (1) may be installed in a standing manner on a floor or furniture surface, indoors or outdoors. For example, the display device (1) may be installed on a wall surface or inside a wall of a building or other structure. For example, the display device (1) may be installed on a wall using a wall mount device.

[0064] In FIG. 1, the display device (1) is described as a flat display device with a flat screen as an example, but is not limited thereto, and the display device (1) according to one or more embodiments of the present disclosure may also include a curved display device or a bendable or flexible display device whose flat and curved states can be changed. The configuration of the present disclosure described below can be applied to display devices of various shapes regardless of the screen size or ratio of the display device.

[0065] The display device (1) can receive content including video signals and audio signals from various content sources, and output video and audio corresponding to the video signals and audio signals. For example, the display device (1) can receive content data via a broadcast reception 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.

[0066] The display device (1) can display an image corresponding to video data and output a sound corresponding to audio data. For example, the display device (1) can restore a plurality of image frames included in the video data and continuously display the plurality of image frames. In addition, the display device (1) can restore an audio signal included in the audio data and continuously output a sound according to the audio signal.

[0067] The 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 on which 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 side of the display device (1). The screen (S) may be configured to display an image toward the front. For example, the screen (S) may display a still image or a moving image. For example, the screen (S) may display a two-dimensional planar image or a three-dimensional stereoscopic image.

[0068] A plurality of pixels (P) can be formed on a screen (S). An image displayed on the screen (S) can be formed by light emitted from each of the plurality of pixels (P). For example, an image can be formed on the screen (S) by combining the light emitted from the plurality of pixels (P) like a mosaic.

[0069] Each of the plurality of pixels (P) can emit light of different brightness and different colors. Specifically, each of the plurality of pixels (P) is divided into sub-pixels (P R , P G , P B ) may include sub-pixels (P R , P G , P B ) is a red sub-pixel (P) that can emit red light. R ), a green sub-pixel (P) capable of emitting green light G ) and blue sub-pixels (P) capable of emitting blue light. B ) can include. For example, red light can refer to light with a wavelength of approximately 620 nm (nanometer, i.e., one billionth of a meter) to 750 nm, green light can refer to light with a wavelength of approximately 495 nm to 570 nm, and blue light can refer to light with a wavelength of approximately 450 nm to 495 nm.

[0070] Red subpixel (P R ), green subpixel (P G ) and blue subpixel (P B ) Each of the plurality of pixels (P) can emit light of various brightness and color by combining the light emitted from each pixel.

[0071] For example, the screen (S) of the display device (1) may have an approximately 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) that are parallel to each other and a pair of second sides (s2) that are parallel to each other.

[0072] 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 the present disclosure is not limited thereto, and the screen (S) of the display device (1) according to one or more 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 substantially equal. Alternatively, the screen (S) of the display device (1) according to various embodiments of the present disclosure may have various shapes, such as various types of polygons or circles, in addition to the rectangular shape.

[0073] FIG. 2 is a drawing illustrating an image provided from a plurality of viewpoints from a display device according to one embodiment of the present disclosure.

[0074] Referring to FIG. 2, a display device (1) according to one embodiment of the present disclosure may be configured to provide different images to viewpoints (V) viewing 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 utilize 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).

[0075] A display device (1) may be configured to provide a plurality of different images to a plurality of viewpoints (V). The viewpoint (V) is formed in an area (hereinafter referred to as a “viewing area”) located a predetermined distance (d) in front (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 a plurality of viewpoints, and the plurality of viewpoints (V) may be arranged in one direction along the viewing area.

[0076] Hereinafter, the front in which the screen (S) displays an 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 below 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 the present disclosure 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) that is parallel to the ground. Alternatively, for example, the second direction (X) may be parallel to the vertical direction of the display device (1) that is perpendicular to the ground.

[0077] Hereinafter, a direction different from the first direction (Z) and the second direction (X) is defined as a third direction (Y). For example, the third direction (Y) may be perpendicular to the first direction (Z) and the second direction (X), but the present disclosure is not limited thereto, and the third direction (Y) may not be perpendicular to the first direction (Z) or the second direction (X). Although 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), one or more embodiments of the present disclosure are not limited thereto.

[0078] 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 and intensity of light propagation at all points 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 points of view (V). By allowing only a specific image to be visible at a specific point of view, different images can be provided to each of the plurality of points of view.

[0079] For example, referring to FIG. 2, light (L1a) traveling from a first point (P1) on a 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. A combination of sub-pixels that provide light (L1a) from the first point (P1) on the screen (S) toward the first viewpoint (VA), a combination of sub-pixels that provide light (L1b) from the first point (P1) to the second viewpoint (VB), and a combination of sub-pixels that provide light (L1c) from the first point (P1) to the third viewpoint (VC) can 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 an example of a point approximately adjacent to the center of the screen (S) in the second direction (X), but is not limited thereto.

[0080] 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 a 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 sub-pixels that provide light (L2a) from the second point (P2) on the screen (S) toward the first viewpoint (VA), the combination of sub-pixels that provide light (L2b) from the second point (P2) to the second viewpoint (VB), and the combination of sub-pixels that provide light (L2c) from the second point (P2) to the third viewpoint (VC) can 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 an example of a point adjacent to the border area of ​​the screen (S) in the second direction (X), but is not limited thereto.

[0081] This allows the viewer to perceive that different images are displayed on the screen (S) depending on the viewpoint (V). In order to provide a plurality of different images to a plurality of viewpoints (V) as described above, the display device (1) according to one embodiment of the present disclosure may include a multi-viewpoint lens (30, see FIGS. 3 and 5, etc.) configured to separate light emitted from a light source (100, see FIG. 4, etc.) and provide the light to each viewpoint (V). The multi-viewpoint lens (30) may also be referred to as a “lenticular lens.” A detailed description thereof will be provided later.

[0082] In the above, the example of the city area being divided into three viewpoints (VA, VB, VC) has been explained, but this is for convenience of explanation and illustration, and in one or more embodiments of the present disclosure, the city area may be divided into a different number of viewpoints.

[0083] According to one embodiment of the present disclosure, the display device (1) can be configured to provide images from points spaced apart from each other on the screen (S) to each of a plurality of viewpoints (V). For example, the viewpoints (VA, VB, VC) at which light (L1a, L1b, L1c) from a first viewpoint (P1) arrives and the viewpoints (VA, VB, VC) at which light (L2a, L2b, L2c) from a second viewpoint (P2) arrives may coincide with each other. As a result, the area of ​​the plurality of viewpoints (V) provided by the display device (1) can be expanded, that is, the display device (1) can provide a wider viewing area.

[0084] Hereinafter, configurations of a display device (1) for providing different images at multiple viewpoints (V) will be described in detail with reference to one or more embodiments of the present disclosure.

[0085] 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 diagram illustrating a light source array of a display device according to one embodiment of the present disclosure and light sources included therein.

[0086] 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 components of the display device (1). Various components of the display device (1) may be accommodated in the case (10). The case (10) may form the exterior of the display device (1).

[0087] For example, the case (10) can support a light source array (20). For example, the case (10) can support a re-focusing lens (30). For example, the case (10) can support a board assembly (50).

[0088] The case (10) may include a front chassis (11). For example, the front chassis (11) may support a front or side edge of the light source array (20). For example, the front chassis (11) may have a shape of an approximately square frame.

[0089] 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 the board assembly (50). For example, the rear chassis (12) may have a substantially flat plate shape, but the present disclosure is not limited thereto.

[0090] A display device (1) may include a light source array (20) configured to emit light. The light source array (20) may be configured to emit light in a first direction (Z). The light source array (20) may be configured to emit light for providing an image.

[0091] For example, the light source array (20) may have a shape roughly equivalent to a rectangular plate. For example, the light source array (20) may have a shape roughly corresponding to the screen (S).

[0092] 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) that are parallel to each other 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). That is, the first side (21) of the light source array (20) may be parallel to the direction in which a plurality of viewpoints (V) are divided and arranged from each other (see FIG. 2).

[0093] 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).

[0094] 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).

[0095] The light source array (20) may include a plurality of light sources (100). Each of the plurality of light sources (100) may be arranged to emit light in approximately the same direction. Each of the plurality of light sources (100) 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 (100) at a constant interval. The intervals between the plurality of light sources (100) may be uniform or non-uniform. For example, the light source array (20) may include a plurality of light sources (100) arranged in a plurality of rows and a plurality of columns. The rows of the light sources (100) may be an array extending in a second direction (X). The columns of the light sources (100) may be an array extending in a third direction (Y).

[0096] For example, each of the plurality of light sources (100) may correspond to each pixel (P) of the screen (S). Alternatively, for example, a combination of a predetermined number of light sources (100) arranged adjacent to each other among the plurality of light sources (100) may correspond to each pixel (P) of the screen (S). That is, a predetermined number (at least one) of the plurality of light sources (100) may form each pixel (P) of the screen (S), and the plurality of light sources (100) may form an image as a whole.

[0097] Each of the plurality of light sources (100) may include a light emitter (110, see FIG. 7, etc.). Each of the plurality of light sources (100) may include one or more light emitters (110). The light emitters (110) may be configured to emit light when a driving voltage and / or a driving current is applied. For example, the light emitters (110) may be light emitting diodes (LEDs).

[0098] A display device (1) according to one embodiment of the present disclosure may include a self-luminous display device in which a light source array (20) using a plurality of LEDs as light sources (100) displays an image on its own. In addition, the light source array (20) of the display device (1) may include various types of display panels, such as a self-luminous panel such as an organic light-emitting diode (OLED) or micro-LED panel, or a light-emitting panel such as a liquid crystal display (LCD) panel. If the light source array (20) is a light-emitting display panel such as an LCD panel, each portion (e.g., sub-pixel) of a pixel formed on the display panel may be defined as a light source (100).

[0099] The light source array (20) may include a light source substrate (25) on which a plurality of light sources (100) are mounted. The light source substrate (25) may include a circuit to which the plurality of light sources (100) are electrically connected. The plurality of light sources (100) 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 an approximately rectangular plate shape. The light source substrate (25) on which the entire light source (100) is mounted may be provided as an integral body, or may be provided as a plurality of light source substrates (25) that are separate from each other.

[0100] The light source array (20) may be arranged to emit light to provide different images at multiple viewpoints. Some of the plurality of light sources (100) may be combined with each other to emit light to provide a specific image (e.g., a first image) at a specific viewpoint (e.g., a first viewpoint) among the plurality of viewpoints (V), and other some of the plurality of light sources (100) may be combined with each other to emit light to provide another specific image (e.g., a second image different from the first image) at another specific viewpoint (e.g., a second viewpoint different from the first viewpoint) among the plurality of viewpoints (V).

[0101] The number of multiple light sources (100) may be equal to or greater than the number of multiple viewpoints (V) included in the entire field of view. The number of columns of the multiple light sources (100) may be equal to or greater than the number of multiple viewpoints (V) included in the entire field of view. The number of light sources (100) included in one row may be equal to or greater than the number of multiple viewpoints (V) included in the entire field of view.

[0102] The display device (1) may include a multi-view lens (30) so that the light emitted from each of the plurality of light sources (100) may be directed toward respective predetermined time points (V). The multi-view lens (30) may be arranged in a first direction (Z) (i.e., forward) of the light source array (20). The multi-view lens (30) may be arranged in the first direction (Z) of each of the plurality of light sources (100). The multi-view lens (30) may be configured to direct the light emitted from each of the plurality of light sources (100) toward respective predetermined time points (V). The multi-view lens (30) may change the path of the light emitted from each of the plurality of light sources (100) so that the light may be emitted toward respective predetermined time points (V).

[0103] A detailed description of the structure and function of the refocusing lens (30) will be described later.

[0104] 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) in 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 the light source array (20), and to supply power to the components.

[0105] The board assembly (50) may include various circuit boards such as a main board, a power supply board, and a source board.

[0106] For example, the main board can control the overall operation of the display device (1). The main board can include a processor and a power management device for driving the display device (1). The main board can 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.

[0107] For example, a power supply board may be configured 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).

[0108] For example, the source board can control the light source array (20). The source board can control the operation of each of the plurality of light sources (100) by transmitting a driving signal to the light source array (20). The source board can include a control circuit for controlling the light source array (20).

[0109] The 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 may be arranged in a merged manner. When the circuit boards are arranged independently of each other, the circuit boards may be electrically connected to each other to transmit and receive 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 a function for driving the display device (1). The cables may include various types of cables, such as film cables, flexible flat cables (FFCs), and flexible printed circuit boards (FPCBs).

[0110] The display device (1) may include a cable for transmitting image data from a board assembly (50) to a light source array (20), a display driver integrated circuit (DDI) for processing digital image data and outputting an analog image signal, etc.

[0111] The configurations of the display device (1) described above with reference to FIGS. 3 and 4 are merely examples of configurations that the display device (1) according to one embodiment of the present disclosure may include, and the present disclosure is not limited thereto. The display device (1) according to one or more embodiments of the present disclosure may include various configurations for performing various functions of the display device (1).

[0112] FIG. 5 is a perspective view illustrating a light source array and a re-focusing lens of a display device according to one embodiment of the present disclosure. FIG. 6 is an enlarged view illustrating a light source array, an incident surface cover, and a re-focusing lens of a display device according to one embodiment of the present disclosure.

[0113] Referring to FIGS. 5 and 6, a display device (1) according to one embodiment of the present disclosure may include a light source array (20) including a plurality of light sources (100) and a multi-view lens (30) configured to change the direction of propagation of light emitted from the light source array (20) and emit light to a predetermined point in time among a plurality of points in time (V).

[0114] The re-pointing lens (30) may be arranged in the first direction (Z) of the light source array (20). For example, the re-pointing lens (30) may be arranged adjacent to the front of the light source array (20). For example, the re-pointing lens (30) may be attached to the front of the light source array (20). For example, an incident surface cover (40) may be provided between the light source array (20) and the re-pointing lens (30), and the re-pointing lens (30) may be attached to the front of the incident surface cover (40) or may be arranged at a position adjacent thereto. For example, the incident surface (31) of the re-pointing lens (30) onto which light from the light source array (20) is incident may be attached to the front of the incident surface cover (40) or may be arranged at a position adjacent thereto. In an embodiment (see FIG. 13) in which no incident surface cover (40) is provided between the re-focusing lens (30) and the light source array (20), the incident surface (31) of the re-focusing lens (30) may be attached to the front of the light source array (20) or may be positioned adjacent thereto.

[0115] For example, the re-focusing lens (30) may be fixed to the light source array (20) using an adhesive or a screw. In addition, the re-focusing lens (30) and the light source array (20) may be fixed to each other in various ways.

[0116] A plurality of re-pointing lenses (30) may be provided. The plurality of re-pointing lenses (30) may be respectively arranged in a first direction (Z) of the light source array (20). The plurality of re-pointing lenses (30) may be arranged in a second direction (X) with respect to each other. Each of the plurality of re-pointing lenses (30) may be provided to emit light incident from the plurality of light sources (100) to a predetermined point of view (V) among the plurality of point of view (V).

[0117] Each of the plurality of multi-view lenses (30) may extend in a third direction (Y) different from the first direction (Z) and the second direction (X). For example, the third direction (Y) may be perpendicular to the first direction (Z) and the second direction (X). If the plurality of multi-view lenses (30) are arranged in the horizontal direction of the display device (1), each of the plurality of multi-view lenses (30) may extend in the vertical direction. If the plurality of multi-view lenses (30) are arranged in the vertical direction of the display device (1), each of the plurality of multi-view lenses (30) may extend in the horizontal direction. If the plurality of multi-view lenses (30) are arranged in the long side direction of the display device (1), each of the plurality of multi-view lenses (30) may extend in the short side direction of the display device (1). If the plurality of multi-view lenses (30) are extended in the short side direction of the display device (1), each of the plurality of multi-view lenses (30) may extend in the long side direction of the display device (1).

[0118] In contrast, each of the plurality of multi-view lenses (30) may extend in a direction different from the first direction (Z) and the second direction (X), but the direction may not be perpendicular to the first direction (Z) and the second direction (X). For example, each of the plurality of multi-view lenses (30) may extend in a direction inclined with respect to a direction perpendicular to the first direction (Z) and the second direction (X). If the plurality of multi-view lenses (30) are arranged in the horizontal direction of the display device (1), each of the plurality of multi-view lenses (30) may extend in a direction inclined with respect to the vertical direction. If the plurality of multi-view lenses (30) are arranged in the vertical direction of the display device (1), each of the plurality of multi-view lenses (30) may extend in a direction inclined with respect to the horizontal direction. If the plurality of multi-view lenses (30) are arranged in the long side direction of the display device (1), each of the plurality of multi-view lenses (30) may extend in a direction inclined with respect to the short side direction of the display device (1). If multiple re-point lenses (30) are arranged in the short-side direction of the display device (1), each of the multiple re-point lenses (30) can extend in a direction inclined with respect to the long-side direction of the display device (1).

[0119] For example, multiple refocusing lenses (30) can be extended parallel to each other.

[0120] The light source array (20) may include a plurality of light sources (100) arranged in parallel with each other. For example, the plurality of light sources (100) may be arranged in a second direction (X) with respect to each other. The light source array (20) may include columns of light sources (100) arranged in the second direction (X) with respect to each other, and each column of light sources (100) may extend in a third direction (Y). The plurality of light sources (100) may be arranged to emit light to be provided at different points in time among a plurality of points in time (V).

[0121] Each of the plurality of multi-view lenses (30) may receive light emitted from a predetermined number (e.g., at least two) of light sources (100) arranged in a second direction (X) from among the plurality of light sources (100) included in the light source array (20). That is, light emitted from at least two or more light sources (100) arranged in the second direction (X) may be received by one multi-view lens (30). Light emitted from at least two or more light sources (100) arranged in the second direction (X) may be refracted by one multi-view lens (30). One multi-view lens (30) may correspond to at least two or more light sources (100) arranged in the second direction (X). For example, the number of light sources (100) arranged in the second direction (X) and corresponding to one multi-view lens (30) may be at least the number of viewpoints (V).

[0122] Hereinafter, with reference to embodiments illustrated in FIGS. 5 and 6, an embodiment will be described in which a light source array (20) includes a first light source (101), a second light source (102), and a third light source (103) that correspond to one multi-view lens (30) and are arranged in parallel (i.e., in a row), and a plurality of viewpoints (V) include a first viewpoint (VA), a second viewpoint (VB), and a third viewpoint (VC) that are arranged in parallel to one another. However, the present disclosure is not limited thereto, and according to one or more embodiments, the light source array (20) may include various numbers of light sources (100) that are arranged in the second direction (X) and correspond to one multi-view lens (30). According to one or more embodiments, the light source array (20) may include a first light source (101) and a second light source (102) arranged in a second direction (X) relative to each other and corresponding to one multi-view lens (30), and the plurality of viewpoints (V) may include a first viewpoint (VA) and a second viewpoint (VB). According to one or more embodiments, the light source array (20) may include four or more light sources arranged in a second direction (X) relative to each other and corresponding to one multi-view lens (30), and the plurality of viewpoints (V) may include four or more viewpoints.

[0123] The first light source (101) described below corresponds to one of the multiple multi-view lenses (30) and is included in one row of the rows of light sources (100) included in the light source array (20), and is configured to emit light to be provided to the first viewpoint (VA) among the multiple viewpoints (V). The first light source (101) may be provided in multiple numbers, included in each of the multiple rows, and correspond to each of the multiple multi-view lenses (30). Additionally, the second light source (102) described below corresponds to one of the multiple multi-view lenses (30) and is included in one row of the rows of light sources (100) included in the light source array (20), and is configured to emit light to be provided to the second viewpoint (VB) among the multiple viewpoints (V). The second light source (102) may be provided in multiple numbers, included in each of the multiple rows, and correspond to each of the multiple multi-view lenses (30). Additionally, the third light source (103) described below corresponds to one of the multiple multi-view lenses (30) and is included in one row of the rows of light sources (100) included in the light source array (20), and is configured to emit light to be provided to the third viewpoint (VC) among the multiple viewpoints (V). The third light source (103) may be provided in multiple numbers, included in each of the multiple rows, and correspond to each of the multiple multi-view lenses (30).

[0124] According to one embodiment, the light source array (20) may include a first light source (101), a second light source (102), and a third light source (103) arranged in a row parallel to each other. For example, the first light source (101), the second light source (102), and the third light source (103) may be arranged in a second direction (X) with respect to each other. For example, the first light source (101), the second light source (102), and the third light source (103) may be arranged in sequence along the second direction (X). The second light source (102) may be arranged between the first light source (101) and the third light source (103).

[0125] The first light source (101), the second light source (102), and the third light source (103) may be configured to emit light for providing an image at different points in time among a plurality of points in time (V). For example, the first light source (101) may be configured to emit light for providing an image at a first point in time (VA) among the plurality of points in time (V). For example, the second light source (102) may be configured to emit light for providing an image at a second point in time (VB) among the plurality of points in time (V). For example, the third light source (103) may be configured to emit light for providing an image at a third point in time (VC) among the plurality of points in time (V) (see FIG. 2).

[0126] The first viewpoint (VA), the second viewpoint (VB), and the third viewpoint (VC) can be arranged relative to each other along the second direction (X). The second viewpoint (VB) can be positioned between the first viewpoint (VA) and the third viewpoint (VC).

[0127] Referring to FIGS. 2, 5 and 6, in one embodiment, the order in which the first light source (101), the second light source (102) and the third light source (103) 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.

[0128] A first viewpoint (VA), a second viewpoint (VB), and a third viewpoint (VC) can be separated from each other. The first viewpoint (VA), the second viewpoint (VB), and the third viewpoint (VC) can be separated from each other in the field of view and arranged in the second direction (X).

[0129] The re-pointing lens (30) may be configured to refract light. The re-pointing lens (30) may be configured to refract light emitted from a first light source (101) and direct it toward a first viewpoint (VA). The re-pointing lens (30) may be configured to refract light emitted from a second light source (102) and direct it toward a second viewpoint (VB). The re-pointing lens (30) may be configured to refract light emitted from a third light source (103) and direct it toward a third viewpoint (VC).

[0130] The re-focusing lens (30) may be configured to refract light incident through the incident surface (31) and emit it through the exit surface (32). The incident surface (31) may be one surface of the re-focusing lens (30) adjacent to the plurality of light sources (100). The exit surface (32) may be the other surface of the re-focusing lens (30) opposite to the incident surface (31).

[0131] For example, the incident surface (31) may have a substantially planar shape. For example, the exit surface (32) may have a convex curved surface in the first direction (Z).

[0132] However, the shape of the multi-view lens (30) is not limited thereto, and according to one or more embodiments, the multi-view lens (30) may have various shapes so that the light emitted from each of the first light source (101), the second light source (102), and the third light source (103) may be refracted while passing through the multi-view lens (30) and may proceed to the corresponding respective viewpoints (VA, VB, VC). As illustrated in FIG. 2, the direction in which the light proceeds from each light source (100) toward each viewpoint (V) may vary depending on the location on the screen (S) (e.g., the first point (P1) and the second point (P2)). Accordingly, the plurality of multi-view lenses (30) may have different shapes or refractive indices depending on their locations on the display device (1) so as to refract the light from the light sources (100) and appropriately proceed to each viewpoint (V).

[0133] By the structure of the multiple light sources (100) and the re-focusing lens (30) as described above, the entire field of view can have multiple viewpoints (V) that provide different images.

[0134] In order to improve the image quality of the image provided from each of the plurality of viewpoints (V), it is preferable that the plurality of viewpoints (V) do not overlap each other, and it is preferable that the light emitted from each of the plurality of light sources (100) proceed only to the corresponding viewpoint (V) after being refracted by the multi-point lens (30). For example, it is preferable that the light emitted from the first light source (101) and refracted by the multi-point lens (30) proceed only to the first viewpoint (VA) and not to the second viewpoint (VB) or the third viewpoint (VC), it is preferable that the light emitted from the second light source (102) and refracted by the multi-point lens (30) proceed only to the second viewpoint (VB) and not to the first viewpoint (VA) or the third viewpoint (VC), and it is preferable that the light emitted from the third light source (103) and refracted by the multi-point lens (30) proceed only to the third viewpoint (VC) and not to the first viewpoint (VA) or the second viewpoint (VB).

[0135] In this way, in order to improve the image quality of the image provided at each of the multiple viewpoints (V), it may be necessary to prevent crosstalk so that the light from the first light source (101), the light from the second light source (102), and the light from the third light source (103) do not overlap with each other in the field of view. In order to prevent crosstalk, it is preferable that the width of the light emitted from each of the multiple light sources (100) and incident on the re-viewpoint lens (30) be reduced.

[0136] Hereinafter, with reference to the detailed structures of the light source (100), the incident surface cover (40), etc., an embodiment of the present disclosure for reducing the width of light incident on the re-focusing lens (30) and reducing and / or preventing crosstalk will be described in detail.

[0137] FIG. 7 is a perspective view illustrating a light source of a display device according to an embodiment of the present disclosure. FIG. 8 is a front view illustrating a light source of a display device according to an embodiment of the present disclosure. FIG. 9 is an enlarged cross-sectional view illustrating a light source and a light source substrate of a display device according to an embodiment of the present disclosure. FIG. 10 is an enlarged view illustrating a light source array, an incident surface cover, and a multi-view lens of a display device according to an embodiment of the present disclosure. FIG. 11 is an enlarged view illustrating a light source array, an incident surface cover, and a multi-view lens of a display device according to a comparative example.

[0138] Referring to FIGS. 7 to 10, a light source (100) of a display device (1) according to one embodiment of the present disclosure may include a light emitting element (110) and a light source case (120) that accommodates the light emitting element (110). The light source case (120) may support the light emitting element (110). The light source (100) may be a package type light source in which the light emitting element (110) is packaged by the light source case (120).

[0139] The light-emitting element (110) may be configured to emit light when a driving voltage and / or a driving current is applied. For example, the light-emitting element (110) may include a light-emitting diode (LED).

[0140] According to one embodiment, the light emitting element (110) may include a plurality of light emitting elements (111, 112, 113) configured to emit light of different colors. A single light source (100) may include a plurality of light emitting elements (111, 112, 113) configured to emit light of different colors. A single light source case (120) may be arranged with a plurality of light emitting elements (111, 112, 113) configured to emit light of different colors.

[0141] For example, the light-emitting element (110) may include a first light-emitting element (111) configured to emit light of a first color, a second light-emitting element (112) configured to emit light of a second color, and a third light-emitting element (113) configured to emit light of a third color. The first color, the second color, and the third color may be different colors. For example, the first color, the second color, and the third color may be red (R), green (G), and blue (B), respectively.

[0142] For example, the first light-emitting element (111), the second light-emitting element (112), and the third light-emitting element (113) can be independently applied with a driving voltage and / or a driving current, and can independently emit light. The light of the first color emitted from the first light-emitting element (111), the light of the second color emitted from the second light-emitting element (112), and the light of the third color emitted from the third light-emitting element (113) can be combined to form a pixel (P) of an image appearing on the screen (S).

[0143] The light source (100) may include an electrode (140) made of a conductive material that is electrically connected to the light source substrate (25). The electrode (140) may be connected to the light emitting element (110). A driving voltage and / or a driving current may be applied through the electrode (140). The light source (100) may be mounted on the light source substrate (25) by connecting the electrode (140) to the light source substrate (25). The electrode (140) may extend from the light source case (120) toward the light source substrate (25).

[0144] According to one embodiment, the light source (100) may be disposed inside the light source case (120) and may include a light-transmitting resin (130) that surrounds the light-emitting element (110). The light-transmitting resin (130) may be provided to protect the light-emitting element (110) while allowing light emitted from the light-emitting element (110) to pass through it. The light-emitting element (110) may be optically transparent or translucent.

[0145] For example, the light-transmitting resin (130) may include a silicone or epoxy resin material. For example, the light-transmitting resin (130) may be formed by injecting molten silicone or epoxy resin into the light source case (120) through a nozzle to surround the light-emitting element (110), and then curing the injected silicone or epoxy resin.

[0146] The light source case (120) can form a receiving space in which the light emitting element (110) is received. The light source case (120) can surround the light emitting element (110). The light source case (120) surrounds the light emitting element (110), but can be open on at least one side so that light emitted from the light emitting element (110) can pass through. For example, the light source case (120) can be open on one side in the first direction (Z). For example, the light source case (120) can be open on one side adjacent to the re-focusing lens (30).

[0147] For example, the light emitting element (110) may be placed on the bottom surface of the receiving space of the light source case (120). The bottom surface of the receiving space of the light source case (120) may be a surface opposite to an open side of the light source case (120) (e.g., a side of the light source slit (122b) to be described later). The light emitting element (110) may be mounted on the bottom surface of the receiving space of the light source case (120).

[0148] For example, the light emitting element (110) may be placed approximately in the center of the bottom surface of the receiving space of the light source case (120).

[0149] The light source case (120) may include a case body (121). The case body (121) may support the light emitting element (110). The case body (121) may have an accommodating space formed therein to accommodate the light emitting element (110). The aforementioned light-transmitting resin (130) may be disposed within the accommodating space of the case body (121). The case body (121) may surround the light emitting element (110). For example, the case body (121) may surround the light emitting element (110) in a direction parallel to the light source substrate (25) (e.g., a direction parallel to the XY plane). For example, the case body (121) may surround the light emitting element (110) in a direction different from the direction in which light emitted from the light emitting element (110) propagates toward the re-focusing lens (30) (e.g., a first direction (Z)).

[0150] According to one embodiment, the case body (121) may be configured to block a portion of the light emitted from the light emitting element (110). For example, the case body (121) may be configured to absorb or reflect the light emitted from the light emitting element (110). For example, the case body (121) may include a material having a color with a high light absorption rate, such as black, to absorb the light from the light emitting element (110) and block the propagation of the light, or may include a material having a color with a high light reflectivity, such as white, or a metal material having a high light reflectivity, to reflect the light from the light emitting element (110) and block the propagation of the light.

[0151] The case body (121) may have one side open in the first direction (Z) so that light emitted from the light emitting element (110) may travel toward the re-point lens (30). The case body (121) may have one side open adjacent to the re-point lens (30) so that light emitted from the light emitting element (110) may travel toward the re-point lens (30). For example, the case body (121) may have a box shape in which at least one side adjacent to the re-point lens (30) in the first direction (Z) is open.

[0152] An inclined surface (121a) may be formed inside the case body (121). The inclined surface (121a) may be formed on the inner surface facing the receiving space for receiving the light-emitting element (110) of the case body (121). The inclined surface (121a) may surround the receiving space for receiving the light-emitting element (110) of the case body (121). The inclined surface (121a) may surround the light-transmitting resin (130).

[0153] The inclined surface (121a) may extend so as to be inclined toward the outside of the case body (121) as it moves toward the open side from the bottom surface of the receiving space of the case body (121). The inclined surface (121a) may be inclined with respect to the first direction (Z) so that the width of the receiving space becomes wider as it moves toward the open side from the bottom surface of the receiving space of the case body (121).

[0154] For example, the inclined surface (121a) may be configured to reflect light. For example, the inclined surface (121a) may be coated with a material having a high light reflectivity. Accordingly, even if light emitted from the light-emitting element (110) is restricted by the light blocking portion (122a), as described below, a portion of the light may be reflected toward the light source slit (122b) by the inclined surface (121a), thereby preventing excessive reduction in the amount of light.

[0155] The light emitted from the light emitting element (110) may be emitted in various directions even if emitted toward the multi-view lens (30). For example, the light emitted from the light emitting element (110) may travel with a Lambertian distribution. However, if the width or radiation angle of the light emitted from the light emitting element (110) is excessively wide, the light emitted from different light sources (100) (e.g., the first light source (101), the second light source (102), and the third light source (103)) may travel toward a different viewpoint (V) rather than the viewpoint (V) corresponding to each other while passing through the multi-view lens (30) and being refracted, thereby overlapping with each other, which may cause a crosstalk phenomenon. If crosstalk occurs, the different viewpoints (V) may not be clearly separated, which may cause a problem of deterioration in image quality.

[0156] In an embodiment of the present disclosure, in order to prevent such crosstalk, each of the plurality of light sources (100) may include a slit cover (122) provided to cover a portion of the light emitting element (110) so as to limit the width of light emitted and propagated from the light emitting element (110).

[0157] A slit cover (122) may be placed between the light emitting element (110) and the re-focusing lens (30). The slit cover (122) may be placed in front of the light emitting element (110) in the first direction (Z). The slit cover (122) may cover a portion of the light emitting element (110) between the light emitting element (110) and the re-focusing lens (30), thereby limiting the width of light emitted from the light emitting element (110) and incident on the re-focusing lens (30).

[0158] For example, the slit cover (122) may be provided on one side of the light source case (120) facing the multi-point lens (30). The slit cover (122) may be provided on one side of the case body (121) facing the multi-point lens (30). The slit cover (122) may be a configuration included in the light source case (120). For example, the slit cover (122) may be formed integrally with the case body (121), but the present disclosure is not limited thereto.

[0159] For example, the slit cover (122) may be placed on one side of the light-transmitting resin (130) facing the re-focusing lens (30). The slit cover (122) may be placed on one side of the light-transmitting resin (130) facing the re-focusing lens (30) to cover a portion of the light-transmitting resin (130).

[0160] The slit cover (122) may include a light blocking portion (122a). The light blocking portion (122a) may be provided to block a portion of the light emitted from the light emitting element (110). The slit cover (122) may block a portion of the light emitted from the light emitting element (110), thereby limiting the width of the light incident on the re-focusing lens (30).

[0161] According to one embodiment, the light blocking portion (122a) may have a material with high light absorption rate so as to absorb a portion of the light emitted from the light emitting element (110). For example, the light blocking portion (122a) may have a black color so as to absorb a portion of the light emitted from the light emitting element (110). For example, the light blocking portion (122a) may include a black coating layer. The black coating layer may be formed by coating a side of the light emitting element (110) facing the multi-view lens (30) using various coating methods, such as printing or sputtering a black paint. For example, the black coating layer may be formed by coating a side of the light source case (120) facing the multi-view lens (30) or a side of the light-transmitting resin (130) facing the multi-view lens (30).

[0162] According to one embodiment, the light blocking portion (122a) may include a material with high light reflectivity so as to reflect a portion of the light emitted from the light emitting element (110) back toward the light emitting element (110) or the interior of the light source case (120). For example, the light blocking portion (122a) may include a reflective layer formed by coating a material with high light reflectivity. The reflective layer may be formed by coating a white paint or a metal material with high reflectivity on one side of the light emitting element (110) facing the multi-view lens (30) by various coating methods, such as printing or sputtering a white paint or a metal material with high reflectivity. For example, the reflective layer may be formed by coating one side of the light source case (120) facing the multi-view lens (30) or one side of the light-transmitting resin (130) facing the multi-view lens (30).

[0163] The slit cover (122) may include a light source slit (122b) that is provided to allow light to pass through. The light source slit (122b) may have a shape in which a part of the slit cover (122) is penetrated to allow light to pass through.

[0164] The light source slit (122b) may be arranged in the first direction (Z), i.e., in front, of the light emitting element (110). For example, the light source slit (122b) and the light emitting element (110) may be arranged side by side in the first direction (Z). For example, the center of the light source slit (122b) and the center of the light emitting element (110) may be arranged in a line with each other in the first direction (Z). For example, the center of the light source slit (122b) and the center of the light emitting element (110) may be arranged on a straight line extending approximately in the first direction (Z).

[0165] The light blocking portion (122a) may be arranged around the light source slit (122b). The light source slit (122b) may be provided in an area surrounded by the light blocking portion (122a). The light source slit (122b) may be defined in a portion of the slit cover (122) that is penetrated, and the light blocking portion (122a) may be defined in another portion of the slit cover (122) that is not penetrated.

[0166] For example, as illustrated in FIGS. 7 and 8, the light source slit (122b) may have a rectangular shape including four sides. The light blocking portion (122a) may be provided to surround the four sides of the light source slit (122b). However, in one or more embodiments, the shape of the light source slit (122b) is not limited to a rectangular shape.

[0167] For example, the light source slit (122b) can be placed approximately at the center of the slit cover (122).

[0168] The light source slit (122b) may be provided so that light emitted from the light emitting element (110) may be transmitted within a predetermined width or less. A portion of the light emitted from the light emitting element (110) may be blocked by the light blocking portion (122a), and a portion of the light that is not blocked may pass through the light source slit (122b) and be incident on the re-focusing lens (30). By the light blocking portion (122a) and the light source slit (122b), the width of the light emitted from the light emitting element (110) and incident on the re-focusing lens (30) may be limited to a predetermined width or less. The width of the light emitted from the light source (100) by passing through the light source slit (122b) may be determined by the width of the light source slit (122b). The radiation angle of light emitted from the light source (100) through the light source slit (122b) can be determined by the width of the light source slit (122b).

[0169] The light blocking member (122a) may cover a portion of the internal space of the light source case (120) in the first direction (Z) so that the light emitted from the light emitting element (110) is limited to a predetermined width or less. Accordingly, the width of the light source slit (122b) arranged between the light blocking members (122a) may be smaller than the width of the internal space of the light source case (120) in which the light emitting element (110) is accommodated.

[0170] For example, the width of the light source slit (122b) can be defined as the width in the short direction of the light source slit (122b). For example, the width of the light source slit (122b) can be defined as the width in the direction of the short side (122bb) of the light source slit (122b). For example, the width of the light source slit (122b) can be defined as the width of the light source slit (122b) in the second direction (X).

[0171] For example, the light source slit (122b) may have a width of approximately 0.2 mm or more and 0.5 mm or less. However, the width of the light source slit (122b) is not limited thereto, and according to one or more embodiments, the width of the light source slit (122b) may vary depending on the distance between the re-focusing lens (30) and the light source (100), the distance between adjacent light sources (100) among the plurality of light sources (100) (for example, the first light source (101) and the second light source (102), or the second light source (102) and the third light source (103)), the number of viewpoints (V), etc.

[0172] In one embodiment, the light source slit (122b) may extend in one direction. For example, the light source slit (122b) may include a long side (122ba) and a short side (122bb), and one direction in which the light source slit (122b) extends may be defined as the direction in which the long side (122ba) extends. For example, the long side (122ba) and the short side (122bb) of the light source slit (122b) may be orthogonal to each other.

[0173] The direction in which the light source slit (122b) extends may be orthogonal to the direction in which the plurality of light sources (100) are arranged with each other. For example, the direction in which the light source slit (122b) extends may be orthogonal to the direction in which the first light source (101), the second light source (102), and the third light source (103) are arranged with each other. For example, the direction in which the long side (122ba) of the light source slit (122b) extends may be orthogonal to the direction in which the first light source (101), the second light source (102), and the third light source (103) are arranged with each other. For example, the direction in which the short side (122bb) of the light source slit (122b) extends may be parallel to the direction in which the first light source (101), the second light source (102), and the third light source (103) are arranged with each other.

[0174] In this way, since the direction of the short side (122bb) of the light source slit (122b) is parallel to the direction in which the first light source (101), the second light source (102), and the third light source (103) are arranged, the width of the light transmitting through the light source slit (122b) can be limited to the direction in which the first light source (101), the second light source (102), and the third light source (103) are arranged (for example, the second direction (X)). As a result, crosstalk between the light emitted from the first light source (101), the light emitted from the second light source (102), and the light emitted from the third light source (103) can be prevented more efficiently. At the same time, the light source slit (122b) is extended longer in a direction orthogonal to the direction in which the first light source (101), the second light source (102), and the third light source (103) are arranged, so that the amount of light incident on the re-focusing lens (30) can be prevented from being excessively limited.

[0175] The direction in which the light source slit (122b) extends may be orthogonal to the direction in which the plurality of viewpoints (V) are arranged with each other. For example, the direction in which the light source slit (122b) extends may be orthogonal to the direction in which the first viewpoint (VA), the second viewpoint (VB), and the third viewpoint (VC) are arranged with each other. For example, the direction in which the long side (122ba) of the light source slit (122b) extends may be orthogonal to the direction in which the first viewpoint (VA), the second viewpoint (VB), and the third viewpoint (VC) are arranged with each other. For example, the direction in which the short side (122bb) of the light source slit (122b) extends may be parallel to the direction in which the first viewpoint (VA), the second viewpoint (VB), and the third viewpoint (VC) are arranged with each other.

[0176] As described above, since the direction of the short side (122bb) of the light source slit (122b) is parallel to the direction in which the plurality of viewpoints (V) are arranged, the width of the light transmitting through the light source slit (122b) can be limited to the direction in which the plurality of viewpoints (V) are arranged (for example, the second direction (X)). This allows for more efficient prevention of overlapping between different viewpoints (V). At the same time, since the light source slit (122b) is extended longer in a direction orthogonal to the direction in which the plurality of viewpoints (V) are arranged, the amount of light incident on the re-view lens (30) can be prevented from being excessively limited.

[0177] The direction in which the light source slit (122b) extends may be orthogonal to the direction in which the plurality of multi-point lenses (30) are arranged with each other (for example, the second direction (X), see FIGS. 5 and 6). For example, the direction in which the long side (122ba) of the light source slit (122b) extends may be orthogonal to the direction in which the plurality of multi-point lenses (30) are arranged with each other. For example, the direction in which the short side (122bb) of the light source slit (122b) extends may be parallel to the direction in which the plurality of multi-point lenses (30) are arranged with each other.

[0178] As described above, the light emitting element (110) may include a plurality of light emitting elements (110) configured to emit light of different colors. For example, the plurality of light emitting elements (110) may include a first light emitting element (111), a second light emitting element (112), and a third light emitting element (113). The plurality of light emitting elements (110) may be arranged side by side in one direction (e.g., the third direction (Y)). The direction in which the light source slit (122b) extends may be parallel to the direction in which the plurality of light emitting elements (110) are arranged with respect to each other. For example, the direction in which the long side (122ba) of the light source slit (122b) extends may be parallel to the direction in which the plurality of light emitting elements (110) are arranged with respect to each other. For example, the direction in which the short side (122bb) of the light source slit (122b) extends may be approximately orthogonal to the direction in which the plurality of light emitting elements (110) are arranged with respect to each other.

[0179] Since the direction in which the light source slit (122b) extends and the direction in which the plurality of light emitting elements (110) extend are parallel to each other, it is possible to prevent any one of the plurality of light emitting elements (110) (for example, the first light emitting element (111) or the third light emitting element (113) located on both sides) from being covered by the light blocking portion (122a) of the slit cover (122), while narrowing the width of the light source slit (122b), thereby efficiently limiting the width of the light emitted from the light source (100).

[0180] By using a light source slit (122b) having the structure described above, it is possible to limit the width of light emitted from a light emitting element (110) and incident on a re-focusing lens (30) to a predetermined width or less, and the width of the light source slit (122b) or the 'predetermined width' mentioned above can be appropriately set according to various design factors such as the number of viewpoints (V) to be divided, the width of each viewpoint (V), the refractive index of the re-focusing lens (30), the distance between the re-focusing lens (30) and the light source (100), and the amount of light to be provided to each viewpoint (V).

[0181] According to one embodiment of the present disclosure, in addition to the structure of the slit cover (122) including the light source slit (122b), the display device (1) may further include an incident surface cover (40) to more efficiently limit the width of light incident on the re-focusing lens (30).

[0182] An incident surface cover (40) can be placed between a plurality of light sources (100) and a re-focusing lens (30). The incident surface cover (40) can be placed in front of the plurality of light sources (100) in the first direction (Z). The incident surface cover (40) covers a portion of the incident surface (31) of the re-focusing lens (30) between the plurality of light sources (100) and the re-focusing lens (30), thereby limiting the width of light incident on the re-focusing lens (30).

[0183] According to one embodiment, the incident surface cover (40) may be placed on the incident surface (31) of the multi-point lens (30). The incident surface cover (40) may contact the incident surface (31) of the multi-point lens (30). For example, the incident surface cover (40) may be attached to the incident surface (31) of the multi-point lens (30). For example, the incident surface cover (40) may be coated on the incident surface (31) of the multi-point lens (30).

[0184] The incident surface cover (40) may include a light absorbing portion (41). The light absorbing portion (41) may be provided to absorb a portion of the light emitted from a plurality of light sources (100). The light absorbing portion (41) may be provided to absorb a portion of the light emitted from each of the light source slits (122b) of the plurality of light sources (100). The light absorbing portion (41) may absorb a portion of the light transmitted through the light source slit (122b), thereby limiting the width of the light incident on the re-focusing lens (30).

[0185] According to one embodiment, the light absorbing portion (41) may have a material with high light absorption rate so as to absorb a portion of the light transmitted through the light source slit (122b). For example, the light absorbing portion (41) may have a black color so as to absorb a portion of the light transmitted through the light source slit (122b). For example, the light absorbing portion (41) may be formed by coating the incident surface (31) of the re-focusing lens (30) with a black paint using various coating methods, such as printing or sputtering.

[0186] In particular, in an embodiment in which the light blocking portion (122a) of the slit cover (122) of the light source (100) has a material with high light reflectivity (a material having a white color, a metal material, etc.), the phenomenon in which the screen appears to sparkle can be more effectively prevented by absorbing light incident from the outside (particularly, the front) of the display device (1) by the light absorbing portion (41).

[0187] The incident surface cover (40) may include a lens slit (42) that is provided to allow light to pass through. The lens slit (42) may have a shape in which a portion of the incident surface cover (40) is penetrated to allow light to pass through. The lens slit (42) may be formed to allow a portion of the light emitted from the light emitting element (110) and passing through the light source slit (122b) to pass through.

[0188] A plurality of lens slits (42) may be provided. A plurality of lens slits (42) may be provided to correspond to a plurality of light sources (100). A light absorbing portion (41) may be provided in the areas between the plurality of lens slits (42).

[0189] A plurality of lens slits (42) may be arranged parallel to each other. For example, a plurality of lens slits (42) may be arranged parallel to a direction in which a plurality of light sources (100) (e.g., a first light source (101), a second light source (102), and a third light source (103)) are arranged parallel to each other. For example, a plurality of lens slits (42) may be arranged parallel to a direction in which a plurality of viewpoints (V) are arranged parallel to each other. For example, a plurality of lens slits (42) may be arranged parallel to a direction in which a plurality of multi-viewpoint lenses (30) are arranged parallel to each other. For example, a plurality of lens slits (42) may be arranged parallel to each other in a direction approximately parallel to a second direction (X).

[0190] A plurality of lens slits (42) may be arranged in the first direction (Z), i.e., in front, of the plurality of light sources (100). For example, each of the plurality of lens slits (42) may be arranged in parallel with a corresponding light source (100) among the plurality of light sources (100) in the first direction (Z).

[0191] For example, when the lens slit (42) corresponding to the first light source (101) is referred to as the first lens slit (42), the first lens slit (42) may be arranged to transmit at least a portion of the light (La) passing through the light source slit (122b) of the first light source (101). In one embodiment, the light emitting element (110) of the first light source (101), the light source slit (122b) of the first light source (101), and the first lens slit (42) may be arranged in parallel with each other in the first direction (Z). In one embodiment, the center of the light emitting element (110) of the first light source (101), the center of the light source slit (122b) of the first light source (101), and the center of the first lens slit (42) may be arranged in a line with each other in the first direction (Z). In one embodiment, the center of the light emitting element (110) of the first light source (101), the center of the light source slit (122b) of the first light source (101), and the center of the first lens slit (42) may be arranged on a straight line extending approximately in the first direction (Z).

[0192] For example, when the lens slit (42) corresponding to the second light source (102) is referred to as the second lens slit (42), the second lens slit (42) may be arranged to transmit at least a portion of the light (Lb) passing through the light source slit (122b) of the second light source (102). In one embodiment, the light emitting element (110) of the second light source (102), the light source slit (122b) of the second light source (102), and the second lens slit (42) may be arranged in parallel with each other in the first direction (Z). In one embodiment, the center of the light emitting element (110) of the second light source (102), the center of the light source slit (122b) of the second light source (102), and the center of the second lens slit (42) may be arranged in a line with each other in the first direction (Z). In one embodiment, the center of the light emitting element (110) of the second light source (102), the center of the light source slit (122b) of the second light source (102), and the center of the second lens slit (42) may be arranged on a straight line extending approximately in the first direction (Z).

[0193] For example, when the lens slit (42) corresponding to the third light source (103) is referred to as the third lens slit (42), the third lens slit (42) may be arranged to transmit at least a portion of the light (Lc) passing through the light source slit (122b) of the third light source (103). In one embodiment, the light emitting element (110) of the third light source (103), the light source slit (122b) of the third light source (103), and the third lens slit (42) may be arranged in parallel with each other in the first direction (Z). In one embodiment, the center of the light emitting element (110) of the third light source (103), the center of the light source slit (122b) of the third light source (103), and the center of the third lens slit (42) may be arranged in a line with each other in the first direction (Z). In one embodiment, the center of the light emitting element (110) of the third light source (103), the center of the light source slit (122b) of the third light source (103), and the center of the third lens slit (42) may be arranged on a straight line extending approximately in the first direction (Z).

[0194] The lens slit (42) may be provided so that light passing through the light source slit (122b) may be transmitted within a predetermined width and incident on the re-view lens (30). A portion of the light passing through the light source slit (122b) is blocked by the light absorbing portion (41) of the incident surface cover (40), and a portion of the light that is not blocked may pass through the lens slit (42) and incident on the re-view lens (30). As described above, the width of the light emitted from the light emitting element (110) may be primarily limited by the light blocking portion (122a) of the slit cover (122) and the light source slit (122b), and the width of the light passing through the light source slit (122b) and incident on the re-view lens (30) may be secondarily limited by the structure of the light absorbing portion (41) and the lens slit (42). The width of light incident on the re-focusing lens (30) can be determined by the width of the lens slit (42). The angle of light incident on the re-focusing lens (30) can be determined by the width of the lens slit (42).

[0195] The width of the lens slit (42) can be defined as the width in the short direction of the lens slit (42). For example, the width of the lens slit (42) can be defined in a direction parallel to the width direction of the light source slit (122b) (i.e., in the direction of the short side (122bb) of the light source slit (122b)). For example, the width of the lens slit (42) can be defined as the width of the lens slit (42) in the second direction (X).

[0196] The width of the lens slit (42) may be less than or equal to the width of the light source slit (122b). In one embodiment, as illustrated in FIG. 10, the width of the lens slit (42) and the width of the light source slit (122b) may be approximately the same. If the width of the lens slit (42) is greater than the width of the light source slit (122b), the light restriction effect by the incident surface cover (40) is expected to be insignificant.

[0197] According to one embodiment, the lens slit (42) may extend in one direction. For example, the lens slit (42) may include a long side and a short side, and one direction in which the lens slit (42) extends may be defined as the direction in which the long side extends, and the width direction of the lens slit (42) may be defined as the direction in which the short side extends. For example, the long side and the short side of the lens slit (42) may be orthogonal to each other.

[0198] The direction in which the lens slit (42) extends may be parallel to the direction in which the light source slit (122b) extends. The direction in which the lens slit (42) extends may be parallel to the direction in which the long side (122ba) of the light source slit (122b) extends. The long side of the lens slit (42) may be parallel to the long side (122ba) of the light source slit (122b). The short side of the lens slit (42) may be parallel to the short side (122bb) of the light source slit (122b).

[0199] The direction in which the lens slit (42) extends may be orthogonal to the direction in which the plurality of light sources (100) are arranged with each other. For example, the direction in which the lens slit (42) extends may be orthogonal to the direction in which the first light source (101), the second light source (102), and the third light source (103) are arranged with each other. For example, the direction in which the long side of the lens slit (42) extends may be orthogonal to the direction in which the first light source (101), the second light source (102), and the third light source (103) are arranged with each other. For example, the direction in which the short side of the lens slit (42) extends may be parallel to the direction in which the first light source (101), the second light source (102), and the third light source (103) are arranged with each other.

[0200] In this way, since the direction of the short side of the lens slit (42) is parallel to the direction in which the first light source (101), the second light source (102), and the third light source (103) are arranged, the width of the light that passes through the lens slit (42) and is incident on the re-focusing lens (30) can be limited to the direction in which the first light source (101), the second light source (102), and the third light source (103) are arranged (for example, the second direction (X)). As a result, crosstalk between the light emitted from the first light source (101), the light emitted from the second light source (102), and the light emitted from the third light source (103) can be prevented more efficiently. At the same time, the lens slit (42) is extended longer in a direction orthogonal to the direction in which the first light source (101), the second light source (102), and the third light source (103) are arranged, so that the amount of light incident on the re-focusing lens (30) can be prevented from being excessively limited.

[0201] The direction in which the lens slit (42) extends may be orthogonal to the direction in which the plurality of viewpoints (V) are arranged with each other. For example, the direction in which the lens slit (42) extends may be orthogonal to the direction in which the first viewpoint (VA), the second viewpoint (VB), and the third viewpoint (VC) are arranged with each other. For example, the direction in which the long side of the lens slit (42) extends may be orthogonal to the direction in which the first viewpoint (VA), the second viewpoint (VB), and the third viewpoint (VC) are arranged with each other. For example, the direction in which the short side of the lens slit (42) extends may be parallel to the direction in which the first viewpoint (VA), the second viewpoint (VB), and the third viewpoint (VC) are arranged with each other.

[0202] As described above, since the direction of the short side of the lens slit (42) is parallel to the direction in which the plurality of viewpoints (V) are arranged, the width of the light passing through the lens slit (42) can be limited to the direction in which the plurality of viewpoints (V) are arranged (for example, the second direction (X)). This allows for more efficient prevention of overlap between different viewpoints (V). At the same time, since the lens slit (42) is extended longer in a direction orthogonal to the direction in which the plurality of viewpoints (V) are arranged, it is possible to prevent the amount of light incident on the re-viewpoint lens (30) from being excessively limited.

[0203] The direction in which the lens slit (42) extends may be orthogonal to the direction in which the plurality of multi-point lenses (30) are arranged with each other (for example, the second direction (X), see FIGS. 5 and 6). For example, the direction in which the long side of the lens slit (42) extends may be orthogonal to the direction in which the plurality of multi-point lenses (30) are arranged with each other. For example, the direction in which the short side of the light source slit (122b) extends may be parallel to the direction in which the plurality of multi-point lenses (30) are arranged with each other.

[0204] The direction in which the lens slit (42) extends may be parallel to the direction in which the plurality of light-emitting elements (110) (e.g., the first light-emitting element (111), the second light-emitting element (112), and the third light-emitting element (113)) are arranged with each other. For example, the direction in which the long side of the lens slit (42) extends may be parallel to the direction in which the plurality of light-emitting elements (110) are arranged with each other. For example, the direction in which the short side of the lens slit (42) extends may be approximately orthogonal to the direction in which the plurality of light-emitting elements (110) are arranged with each other.

[0205] By using a lens slit (42) having the structure described above, it is possible to limit the width of light that passes through both the light source slit (122b) and the lens slit (42) and is incident on the re-pointing lens (30) to a predetermined width or less, and the width of the lens slit (42) or the 'predetermined width' mentioned above can be appropriately set according to various design factors such as the number of viewpoints (V) to be divided, the width of each viewpoint (V), the refractive index of the re-pointing lens (30), the distance between the re-pointing lens (30) and the light source (100), and the amount of light to be provided to each viewpoint (V).

[0206] According to one embodiment, the incident surface cover (40) may be formed integrally and provided on the incident surfaces (31) of a plurality of multi-point lenses (30) (see FIG. 6). Alternatively, according to one embodiment, the incident surface cover (40) may be formed of a plurality of incident surface covers (40) and provided on the incident surfaces (31) of a plurality of multi-point lenses (30), respectively.

[0207] As described above, according to one embodiment, the display device (1) includes a slit cover (122) and an incident surface cover (40), thereby limiting the width of light emitted from the light emitting element (110) and incident on the re-viewing lens (30) to a predetermined width or less. Accordingly, crosstalk between the light emitted from each of the plurality of light sources (100) can be efficiently reduced and / or prevented. For example, as illustrated in FIG. 10, light (La) emitted from the first light source (101) sequentially passes through the light source slit (122b) of the slit cover (122) and the lens slit (42) of the incident surface cover (40), enters the re-viewing lens (30) with a limited width, and then is refracted by the re-viewing lens (30) to proceed toward the first viewpoint (VA). In addition, as illustrated in FIG. 10, light (Lb) emitted from the second light source (102) can sequentially pass through the light source slit (122b) of the slit cover (122) and the lens slit (42) of the incident surface cover (40), and then be incident on the re-pointing lens (30) with a limited width, and then be refracted by the re-pointing lens (30) and then proceed toward the second viewpoint (VB). In addition, as illustrated in FIG. 10, light (Lc) emitted from the third light source (103) can sequentially pass through the light source slit (122b) of the slit cover (122) and the lens slit (42) of the incident surface cover (40), and then be incident on the re-pointing lens (30) with a limited width, and then be refracted by the re-pointing lens (30) and then proceed toward the third viewpoint (VC). In this process, light (La) emitted from the first light source (101) may not reach the second time point (VB) or the third time point (VC), light (Lb) emitted from the second light source (102) may not reach the first time point (VA) or the third time point (VC), and light (Lc) emitted from the third light source (103) may not reach the first time point (VA) or the second time point (VB).That is, the light (La, Lb, Lc) emitted from each light source (101, 102, 103) in the field of view does not overlap with each other, so crosstalk may not occur, and image noise may be reduced and image quality may be improved. In addition, as crosstalk is reduced / prevented, it is possible to design the display device (1) to further increase the number of viewpoints (V) provided.

[0208] Referring to FIG. 11, an embodiment is described that is comparable to the embodiment of the present disclosure described with reference to FIGS. 1 to 10.

[0209] Referring to Fig. 11, according to a comparative embodiment, each of the plurality of light sources (100-1) may include a light emitting element (110) and a light source case (120-1) that accommodates the light emitting element (110). The light source case (120-1) may have a shape in which one side facing the multi-point lens (30) is open. Unlike the embodiment described with reference to Figs. 1 to 10, in the comparative embodiment of Fig. 11, the plurality of light sources (100-1) are not provided with a slit cover for limiting the width of light emitted from the light emitting element (110). In addition, unlike the embodiment described with reference to Figs. 1 to 10, in the comparative embodiment of Fig. 11, an incident surface cover for limiting the width of light incident on the multi-point lens (30) is not provided between the multi-point lens (30) and the plurality of light sources (100-1).

[0210] Under this structure, the light emitted from each of the plurality of light sources (100-1) of the comparative example can travel with a relatively wide width and be incident on the re-focusing lens (30). Thereafter, the light refracted by the re-focusing lens (30) can travel not only to the corresponding time point (V) but also to other time points (V), and in this case, a problem of crosstalk occurring due to the light overlapping in the field of view may occur. For example, as illustrated in FIG. 11, a portion of the light emitted from the first light source (101-1) may be incident not only on the first point of time (VA) but also on the second point of time (VB) or the third point of time (VC), a portion of the light emitted from the second light source (102-1) may be incident not only on the second point of time (VB) but also on the first point of time (VA) or the third point of time (VC), and a portion of the light emitted from the third light source (103-1) may be incident not only on the third point of time (VC) but also on the first point of time (VA) or the second point of time (VB).

[0211] However, as illustrated in FIG. 10, in the embodiment of the present disclosure, crosstalk can be more efficiently reduced and / or prevented by limiting the width of light incident on the re-focusing lens (30) using the slit cover (122) and the incident surface cover (40).

[0212] FIG. 12 is an enlarged view of a light source array, an incident surface cover, and a re-focusing lens of a display device according to one embodiment of the present disclosure.

[0213] In describing one embodiment of the present disclosure with reference to FIG. 12, the same configuration as that of the embodiment described with reference to FIGS. 1 to 10 may be given the same drawing reference numerals and detailed descriptions may not be repeated.

[0214] Referring to FIG. 12, the incident surface cover (40) of the display device (1) according to one embodiment of the present disclosure may include a lens slit (42) having a width narrower than the width of the light source slit (122b) of the slit cover (122). The width of the lens slit (42) may be smaller than the width of the light source slit (122b), and here, the width of the lens slit (42) and the width of the light source slit (122b) may be defined as widths in directions corresponding to each other.

[0215] The width of the light source slit (122b) can be defined as the width of the light source slit (122b) in the short direction (i.e., the width in the direction of the short side (122bb). The width of the light source slit (122b) can be defined as the width of the light source slit (122b) in the direction in which a plurality of light sources (100) (e.g., the first light source (101), the second light source (102), and the third light source (103)) are arranged with respect to each other. The width of the light source slit (122b) can be defined as the width of the light source slit (122b) in the direction in which a plurality of viewpoints (V) (e.g., the first viewpoint (VA), the second viewpoint (VB), and the third viewpoint (VC)) are arranged with respect to each other. The width of the light source slit (122b) can be defined as the width of the light source slit (122b) in the direction in which a plurality of multi-viewpoint lenses (30) are arranged with respect to each other. The width of the light source slit (122b) can be defined as the width of the light source slit (122b) in a direction orthogonal to the direction in which a plurality of light emitting elements (110) (e.g., a first light emitting element (111), a second light emitting element (112), and a third light emitting element (113)) included in one light source (100) are arranged. The width of the light source slit (122b) can be defined as the width of the light source slit (122b) in the second direction (X).

[0216] Likewise, the width of the lens slit (42) can be defined as the width in the short direction of the lens slit (42). The width of the lens slit (42) can be defined as the width of the lens slit (42) in the direction in which the plurality of light sources (100) (e.g., the first light source (101), the second light source (102), and the third light source (103)) are arranged with respect to each other. The width of the lens slit (42) can be defined as the width of the lens slit (42) in the direction in which the plurality of viewpoints (V) (e.g., the first viewpoint (VA), the second viewpoint (VB), and the third viewpoint (VC)) are arranged with respect to each other. The width of the lens slit (42) can be defined as the width of the lens slit (42) in the direction in which the plurality of multi-viewpoint lenses (30) are arranged with respect to each other. The width of the lens slit (42) can be defined as the width of the lens slit (42) in a direction orthogonal to the direction in which a plurality of light-emitting elements (110) (e.g., a first light-emitting element (111), a second light-emitting element (112), and a third light-emitting element (113)) included in one light source (100) are arranged. The width of the lens slit (42) can be defined as the width of the lens slit (42) in the second direction (X).

[0217] According to this structure, the incident surface cover (40) can more efficiently limit the width of light that passes through the light source slit (122b) and then enters the re-focusing lens (30) through the lens slit (42).

[0218] FIG. 13 is an enlarged view of a light source array and a re-focusing lens of a display device according to one embodiment of the present disclosure.

[0219] In describing one embodiment of the present disclosure with reference to FIG. 13, the same configuration as that of the embodiment described with reference to FIGS. 1 to 10 may be given the same drawing reference numerals and detailed descriptions may not be repeated.

[0220] Referring to FIG. 13, a display device (1) according to one embodiment of the present disclosure may include a slit cover (122) that covers a portion of a light-emitting element (110), and the slit cover (122) may include a light source slit (122b) that is provided so that light emitted from the light-emitting element (110) may transmit within a predetermined width or less. However, unlike the embodiments described above, the display device (1) according to one embodiment may not include an incident surface cover. That is, according to one embodiment, no incident surface cover is provided on the incident surface (31) of the multi-view lens (30), and thus, light transmitted through the light source slit (122b) may be directly incident on the multi-view lens (30).

[0221] Even in such a case, the width of the light source slit (122b), the distance between the light source (100) and the re-focusing lens (30), the distance between multiple light sources (100), the number of light sources (100) and the viewpoint (V), etc., can be appropriately designed to reduce and / or prevent the problem of crosstalk occurring, such as the light refracted by the re-focusing lens (30) overlapping with each other in the field of view.

[0222] A display device according to one embodiment of the present disclosure is a display device configured to provide a plurality of different images at a plurality of viewpoints, the display device including a first light source configured to emit light for providing an image at a first viewpoint among the plurality of viewpoints, a second light source arranged parallel to the first light source and configured to emit light for providing an image at a second viewpoint different from the first viewpoint among the plurality of viewpoints, and a multi-viewpoint lens configured to refract light emitted from the first light source and propagate toward the first viewpoint, and to refract light emitted from the second light source and propagate toward the second viewpoint. Each of the first light source and the second light source may include a light-emitting element, and a slit cover between the light-emitting element and the multi-viewpoint lens, the slit cover having a light source slit that is configured to allow light emitted from the light-emitting element to transmit within a predetermined width or less.

[0223] The direction in which the light source slit of the slit cover included in each of the first light source and the second light source extends may be orthogonal to the direction in which the first light source and the second light source are arranged with each other.

[0224] The direction in which the light source slit of the slit cover included in each of the first light source and the second light source extends may be orthogonal to the direction in which the first viewpoint and the second viewpoint are arranged with each other.

[0225] The above re-pointing lens may include a plurality of re-pointing lenses. The direction in which the light source slits of the slit covers included in each of the first light source and the second light source extend may be orthogonal to the direction in which the plurality of re-pointing lenses are arranged with each other.

[0226] The light emitting elements included in each of the first light source and the second light source may include a first light emitting element configured to emit light of a first color, a second light emitting element configured to emit light of a second color different from the first color, and a third light emitting element configured to emit light of a third color different from the first color and the second color. The direction in which the first light emitting element, the second light emitting element, and the third light emitting element are arranged may be parallel to the direction in which the light source slit of the slit cover included in each of the first light source and the second light source extends.

[0227] The display device may further include an incident surface cover disposed between the slit cover and the re-focusing lens, the incident surface cover having a lens slit configured to allow light passing through the light source slit to pass through a predetermined width or less and be incident on the re-focusing lens.

[0228] The width of the above lens slit may be less than or equal to the width of the above light source slit.

[0229] The above incident surface cover can be placed on the incident surface of the re-focusing lens adjacent to the first light source and the second light source.

[0230] The above incident surface cover may include a light absorbing portion coated on the incident surface of the re-focusing lens adjacent to the first light source and the second light source.

[0231] The lens slit may include a first lens slit configured to transmit at least a portion of light passing through the light source slit of the first light source, and a second lens slit arranged parallel to the first lens slit and configured to transmit at least a portion of light passing through the light source slit of the second light source. The center of the light-emitting element of the first light source, the center of the light source slit of the first light source, and the center of the first lens slit may be arranged in a line with each other. The center of the light-emitting element of the second light source, the center of the light source slit of the second light source, and the center of the second lens slit may be arranged in a line with each other.

[0232] Each of the first light source and the second light source may further include a light source case that accommodates the light-emitting element. The slit cover may be provided on one side of the light source case facing the re-focusing lens.

[0233] Each of the first light source and the second light source may further include a light-transmitting resin disposed inside the light source case and surrounding the light-emitting element. The slit cover may cover a portion of the light-transmitting resin on one side of the light-transmitting resin facing the re-focusing lens.

[0234] The above slit cover may include a light blocking portion arranged around the periphery of the light source slit and provided to block a portion of light emitted from the light emitting element.

[0235] The above light blocking member may include a black coating layer that is provided to absorb a portion of the light emitted from the light emitting element.

[0236] The above light blocking member may include a reflective layer provided to reflect a portion of light emitted from the light emitting element toward the light emitting element.

[0237] A display device according to one embodiment of the present disclosure may include a plurality of light sources arranged in parallel to each other and configured to emit light forward to provide a plurality of different images at a plurality of viewpoints, and a multi-view lens configured to refract light emitted from the plurality of light sources and propagate toward a corresponding viewpoint among the plurality of viewpoints. Each of the plurality of light sources may include a light-emitting element and a light source case that accommodates the light-emitting element. The light source case may include a light source slit arranged between the light-emitting element and the multi-view lens and configured to allow light emitted from the light-emitting element to transmit within a predetermined width or less, and a light blocking portion arranged around the light source slit and configured to block a portion of the light emitted from the light-emitting element.

[0238] The width of the light source slit may be smaller than the width of the internal space of the light source case in which the light emitting element is accommodated.

[0239] The above light blocking member may be coated with a material that absorbs or reflects a portion of the light emitted from the light emitting element.

[0240] The light source slit may have a rectangular shape including four sides. The light blocking member may surround the four sides of the light source slit.

[0241] A display device according to one embodiment of the present disclosure may include a plurality of light sources arranged in parallel to each other and configured to emit light forward to provide a plurality of different images at a plurality of viewpoints, and a multi-view lens configured to refract light emitted from the plurality of light sources and cause the light to advance toward a corresponding viewpoint among the plurality of viewpoints. Each of the plurality of light sources may include a light-emitting element, and a slit cover between the light-emitting element and the multi-view lens, the slit cover having a light source slit that is configured to allow light emitted from the light-emitting element to transmit within a predetermined width or less.

[0242] According to the invention, a display device can 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.

[0243] According to the invention of the present invention, a plurality of light sources may include a slit cover configured to limit the width of light emitted from the light emitting element, thereby narrowing the width of light incident on the re-focusing lens.

[0244] According to the idea of ​​the present disclosure, the width of light incident on the refocusing lens is narrowed by the slit cover, so that the number of different viewpoints formed in the field of view can increase.

[0245] According to the idea of ​​the present disclosure, the width of light incident on the re-focusing lens is narrowed by the slit cover, so that crosstalk can be reduced and / or prevented, thereby reducing image noise and improving image quality.

[0246] According to the idea of ​​the present disclosure, the incident surface of the re-focusing lens may include an incident surface cover that is provided to limit the width of light emitted from a light source and incident on the re-focusing lens, thereby narrowing the width of light incident on the re-focusing lens.

[0247] According to the idea of ​​the present disclosure, the width of light incident on the refocusing lens is narrowed by the incident surface cover, so that the number of different viewpoints formed in the field of view can increase.

[0248] According to the idea of ​​the present disclosure, the width of light incident on the re-focusing lens is narrowed by the incident surface cover, so that crosstalk can be reduced and / or prevented, thereby reducing image noise and improving image quality.

[0249] The effects according to the idea of ​​the present disclosure are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the description below.

[0250] The above illustrates and describes one or more embodiments of the present disclosure. However, the present disclosure is not limited to the above-described embodiments, and those skilled in the art will appreciate that various modifications and implementations can be made without departing from the spirit and scope of the invention as set forth in the claims below.

Claims

1. A first light source configured to emit light visible from a first point of view; A second light source arranged in a line with the first light source in the first direction and configured to emit light that can be seen at a second point of time different from the first point of time; and At least one re-view lens configured to refract light emitted from the first light source and propagate toward the first point of view, and to refract light emitted from the second light source and propagate toward the second point of view; Each of the first light source and the second light source, light emitting element; and A display device comprising: a slit cover covering a portion of the light emitting element between the light emitting element and the at least one re-view lens, the slit cover including a light source slit having a first width and a light source slit configured such that light emitted from the light emitting element passes through the light source slit; 2. In paragraph 1, A display device in which the light source slits of the slit covers of each of the first light source and the second light source extend in a direction orthogonal to the first direction.

3. In paragraph 1, A display device in which the light source slits of the slit covers of each of the first light source and the second light source extend in a direction orthogonal to the direction in which the first viewpoint and the second viewpoint are arranged with each other.

4. In paragraph 1, wherein said at least one re-viewing lens comprises a plurality of re-viewing lenses, A display device in which the light source slits of the slit covers of each of the first light source and the second light source are orthogonal to the direction in which the plurality of re-point lenses are arranged.

5. In paragraph 1, The light-emitting elements of each of the first light source and the second light source are, A first light-emitting element configured to emit light of a first color; A second light-emitting element configured to emit light of a second color different from the first color; and a third light-emitting element configured to emit light of a third color different from the first color and the second color; A display device in which the direction in which the first light-emitting element, the second light-emitting element, and the third light-emitting element are arranged is parallel to the direction in which the light source slits of the slit covers of each of the first light source and the second light source extend.

6. In paragraph 1, Further comprising an entrance surface cover including at least one re-focusing lens and a lens slit having a second width, positioned between the first light source and the second light source; A display device in which the lens slit is configured such that light passing through the light source slit of one of the first light source or the second light source passes through the incident surface cover and enters the at least one re-view lens.

7. In paragraph 6, A display device wherein the second width is less than or equal to the first width.

8. In paragraph 6, The above incident surface cover is placed on the incident surface of the at least one re-focusing lens, A display device wherein the incident surface of the at least one re-focusing lens is adjacent to the first light source and the second light source.

9. In paragraph 8, A display device in which the incident surface cover includes a light absorbing portion coated on the incident surface of the at least one re-focusing lens.

10. In paragraph 6, The above lens slit is, A first lens slit configured to allow at least a portion of light passing through the light source slit of the first light source to transmit through the incident surface cover; and a second lens slit arranged parallel to the first lens slit and configured to allow at least a portion of light passing through the light source slit of the second light source to transmit through the incident surface cover; The center of the light emitting element of the first light source, the center of the light source slit of the first light source, and the center of the first lens slit are arranged in a line with each other, A display device in which the center of the light-emitting element of the second light source, the center of the light source slit of the second light source, and the center of the second lens slit are arranged in a line with each other.

11. In paragraph 1, Each of the first light source and the second light source, Further comprising a light source case accommodating the light emitting element; A display device in which the slit covers of each of the first light source and the second light source are provided on one side of the light source case facing the at least one re-focusing lens.

12. In paragraph 11, Each of the first light source and the second light source, It further includes a transparent resin disposed inside the light source case and surrounding the light emitting element; A display device in which the slit covers of each of the first light source and the second light source cover a portion of the transparent resin on one side facing the at least one re-focusing lens of the light-transmitting resin.

13. In paragraph 1, A display device in which each of the slit covers of the first light source and the second light source includes a light blocking portion arranged around the periphery of the light source slit and configured to block a portion of light emitted from the light emitting element.

14. In paragraph 13, A display device in which each of the light blocking portions of the first light source and the second light source includes a black coating layer configured to absorb a portion of light emitted from the light-emitting element.

15. In paragraph 13, A display device wherein each of the light blocking portions of the first light source and the second light source includes a reflective layer configured to reflect a portion of light emitted from the light emitting element toward the light emitting element.

Images