Display device

Abstract

The display device includes an array of light sources configured to emit light in a first direction, and a multi-view lens adjacent to the array of light sources in the first direction. The array of light sources includes a first light source configured to emit light to provide an image to a first view of a plurality of views, and a second light source adjacent to the first light source in a second direction different from the first direction and configured to emit light to provide an image to a second view of the plurality of views adjacent to the first view. The multi-view lens includes a refractive unit configured to refract light emitted from the first light source to the first view, and a reflective unit adjacent to the refractive unit in the second direction and configured to reflect light emitted from the second light source to the second view.

Description

Technical Field

[0001] Embodiments of this disclosure relate to display devices. Background Technology

[0002] A display device is an output device that converts acquired or stored electrical information into visual information and displays the converted visual information to the user, and is used in various fields such as homes and businesses.

[0003] Display devices include, for example, monitor devices connected to personal computers or server computers, portable computer devices, navigation terminal devices, general-purpose television devices, Internet Protocol Television (IPTV) devices, portable terminal devices (such as smartphones, tablet PCs, personal digital assistants (PDAs), and cellular phones), various display devices used in industrial environments for playing back images such as advertisements and movies, or various types of audio / video systems.

[0004] Display devices include types that provide the same image to multiple viewpoints facing the screen, and multi-viewpoint display types that provide different images depending on the viewpoint.

[0005] Multi-viewpoint display devices can modulate external light or light emitted from their own light source to provide different images depending on the viewpoint. Holographic methods and stereoscopic methods exist as methods for providing different images according to the viewpoint.

[0006] Holographic methods are a way to provide different images from different viewpoints by using the interference phenomenon of coherent light.

[0007] The stereo method is a method that provides multiple different two-dimensional images for each viewpoint.

[0008] Stereoscopic methods include automatic stereoscopic methods that separate images from a display device to form a field of view. Types of automatic stereoscopic methods include parallax barrier methods using parallax barriers, lenticular lens methods, etc.

[0009] The lenticular lens method is a method that refracts light incident from a pixel onto a lenticular lens and emits the incident light in a desired direction, thereby providing different images to multiple viewpoints. Summary of the Invention

[0010] Technical issues

[0011] One or more embodiments provide a display device having an improved structure to provide different images to multiple viewpoints.

[0012] One or more embodiments provide a display device having an improved structure to expand the area of ​​multiple viewpoints.

[0013] One or more embodiments provide a display device having an improved structure to reduce image noise and improve image quality.

[0014] One or more embodiments provide a display device having an improved structure to prevent a reduction in image brightness while expanding the area of ​​multiple viewpoints.

[0015] The technical tasks to be achieved in this document are not limited to those described above, and those skilled in the art will clearly understand from the following description other technical tasks not mentioned.

[0016] Technical solution

[0017] According to one aspect of one or more embodiments, a display device is provided, configured to provide a plurality of different images to a plurality of viewpoints, comprising: a light source array configured to emit light in a first direction; and a multi-viewpoint lens adjacent to the light source array in the first direction, wherein the light source array includes: a first light source configured to emit light to provide an image to a first viewpoint among the plurality of viewpoints; and a second light source adjacent to the first light source in a second direction different from the first direction, the second light source being configured to emit light to provide an image to a second viewpoint among the plurality of viewpoints adjacent to the first viewpoint in the second direction, wherein the multi-viewpoint lens includes: a refractive portion configured to refract light emitted from the first light source to the first viewpoint; and a reflective portion adjacent to the refractive portion in the second direction, the reflective portion being configured to reflect light emitted from the second light source to the second viewpoint.

[0018] The refractive portion may have a lens axis passing through the focal point of the refractive portion in the first direction. The reflective portion may include a reflective surface inclined relative to the first direction, such that as the distance from the second light source to the reflective portion increases in the second direction, the distance between the reflective portion and the lens axis decreases.

[0019] The reflective portion may have a predetermined refractive index. The reflective portion may include a reflective surface configured to totally reflect light incident from the second light source.

[0020] The reflective portion may further include a refracting surface configured to receive light reflected by the reflective surface. The refracting surface may be configured to refract the light reflected by the reflective surface such that the angle of inclination of the refracted light relative to the first direction is reduced.

[0021] The second light source may include: a first edge light source on a first side of the first light source in a second direction; and a second edge light source on a second side of the first light source opposite to the first side of the first light source. The reflecting portion may include: a first reflecting portion on a first side of the refractive portion in a second direction, the first reflecting portion being configured to reflect light emitted from the first edge light source; and a second reflecting portion on a second side of the refractive portion opposite to the first side of the refractive portion, the second reflecting portion being configured to reflect light emitted from the second edge light source.

[0022] The second viewpoint may include a first edge viewpoint on a first side of the first viewpoint in a second direction, and a second edge viewpoint on a second side of the first viewpoint opposite to the first side of the first viewpoint. A first reflecting portion may be configured to reflect light from a first edge light source to the first edge viewpoint. A second reflecting portion may be configured to reflect light from a second edge light source to the second edge viewpoint.

[0023] A multi-viewpoint lens can be adjacent to the surface of the light source array in the first direction.

[0024] The display device may also include an optical sheet between the light source array and the multi-viewpoint lens. The optical sheet is configured to limit the range of light emitted from the first light source and incident on the refractive portion to a first width, and to limit the range of light emitted from the second light source and incident on the reflective portion to a second width smaller than the first width.

[0025] The optical element may include a first aperture configured to transmit at least a portion of light emitted from a first light source and traveling in parallel to a refractive portion; and a second aperture adjacent to the first aperture in a second direction and configured to transmit at least a portion of light emitted from a second light source and traveling in parallel to a reflective portion. The size of the second aperture may be smaller than the size of the first aperture.

[0026] The first light source can be configured to emit light toward the refractive portion within a first width range, and the second light source can be configured to emit light toward the reflective portion within a second width range smaller than the first width range.

[0027] The light source array may include multiple light source arrays spaced apart from each other. The multi-viewpoint lens may include multiple multi-viewpoint lenses, each corresponding to one of the multiple light source arrays. The refractive portion of each of the multiple multi-viewpoint lenses may be configured to refract light such that light from a first light source in each of the multiple light source arrays travels towards the same first viewpoint. The reflective portion of each of the multiple multi-viewpoint lenses may be configured to reflect light such that light from a second light source in each of the multiple light source arrays travels towards the same second viewpoint.

[0028] The light source array may include multiple light source arrays spaced apart from each other. The multiple light source arrays may include: a central light source array located at the center of the multiple light source arrays in a second direction; and an outer light source array adjacent to the central light source array in the second direction. The multi-view lens includes multiple multi-view lenses. The multiple multi-view lenses may include a central multi-view lens adjacent to the central light source array in a first direction, and an outer multi-view lens adjacent to the outer light source array in the first direction.

[0029] The external multi-view lens can have an asymmetrical shape relative to the center of the external multi-view lens in the second direction.

[0030] The angle at which the light emitted by the reflective portion of the external multi-view lens travels relative to the first direction can be greater than the angle at which the light emitted by the reflective portion of the central multi-view lens travels relative to the first direction.

[0031] The first and second directions can be perpendicular to each other. A multi-viewpoint lens can extend upwards into a third direction, different from the first and second directions.

[0032] According to another aspect of one or more embodiments, a display device is provided, configured to provide a plurality of different images to a plurality of viewpoints, comprising: a light source array configured to emit light in a first direction; a multi-viewpoint lens adjacent to the light source array in the first direction; and an optical sheet located between the light source array and the multi-viewpoint lens, wherein the light source array includes: a first light source configured to emit light to provide an image to a first viewpoint among the plurality of viewpoints; and a second light source adjacent to the first light source in a second direction different from the first direction, the second light source being configured to emit light to provide an image to a second viewpoint among the plurality of viewpoints adjacent to the first viewpoint in the second direction, and wherein the multi-viewpoint lens includes: a refractive portion configured to refract light emitted from the first light source to the first viewpoint; and a reflective portion adjacent to the refractive portion in the second direction, the reflective portion being configured to reflect light emitted from the second light source to the second viewpoint.

[0033] The refractive portion may have a lens axis passing through the focal point of the refractive portion in a first direction. The reflective portion may include a reflective surface that is inclined relative to the first direction, such that as the distance from the second light source to the reflective portion increases in the second direction, the distance between the reflective portion and the lens axis decreases.

[0034] The reflective portion may have a predetermined refractive index. The reflective portion may include a reflective surface configured to totally reflect light incident from the second light source.

[0035] The reflective portion may further include a refracting surface configured to receive light reflected by the reflective surface. The refracting surface may be configured to refract the light reflected by the reflective surface such that the angle of inclination of the refracted light relative to the first direction is reduced.

[0036] The optical sheet can be configured to limit the range of light emitted from a first light source and incident on the refractive portion to a first width, and to limit the range of light emitted from a second light source and incident on the reflective portion to a second width less than the first width. Attached Figure Description

[0037] The embodiments will become clearer through the following detailed description taken in conjunction with the accompanying drawings, in which:

[0038] Figure 1 It is a perspective view of a display device according to one or more embodiments;

[0039] Figure 2 It is a view showing an image provided from multiple viewpoints by a display device according to one or more embodiments;

[0040] Figure 3 This is an exploded perspective view showing the components of a display device according to one or more embodiments;

[0041] Figure 4 This is a view showing a light source array and the light sources included in a display device according to one or more embodiments;

[0042] Figure 5 This is an exploded view showing the light source array, multi-view lens, and optical sheet of a display device according to one or more embodiments;

[0043] Figure 6 This is an enlarged view showing the light source array and multi-view lens of a display device according to one or more embodiments;

[0044] Figure 7 This is an enlarged view showing the light source array and multi-view lens of a display device according to one or more embodiments;

[0045] Figure 8 This is a view showing an example in which the multi-view lens of a display device according to one or more embodiments has a flat reflective surface;

[0046] Figure 9 This is a view showing an example in which a multi-view lens of a display device according to one or more embodiments has a coated reflective surface;

[0047] Figure 10This is a view showing an example in which a multi-view lens of a display device according to one or more embodiments has a reflective portion including a mirror;

[0048] Figure 11 It is a view showing light emitted from multiple light sources of a display device according to one or more embodiments passing through an optical sheet;

[0049] Figure 12 It is a view showing light emitted from multiple light sources of a display device according to one or more embodiments passing through holes in an optical sheet;

[0050] Figure 13 It is a view showing light emitted from multiple light sources of a display device according to one or more embodiments passing through an optical sheet including a high refractive index portion and a low refractive index portion;

[0051] Figure 14 It is a view showing light emitted from multiple light sources of a display device according to one or more embodiments passing through an optical sheet including a high refractive index portion and a low refractive index portion;

[0052] Figure 15 It is a view showing light emitted from multiple light sources of a display device according to one or more embodiments passing through an optical sheet including a high refractive index portion and a low refractive index portion;

[0053] Figure 16 It is a view showing the travel of light emitted from multiple light sources of a display device according to one or more embodiments to a multi-view lens;

[0054] Figure 17 It is a view showing a plurality of adjacent light source arrays and a plurality of adjacent multi-view lenses included in a display device according to one or more embodiments;

[0055] Figure 18 This is a view showing a light source array, a central multi-view lens, and an external multi-view lens of a display device according to one or more embodiments;

[0056] Figure 19 This is a view showing the light source array and the central multi-view lens of a display device according to one or more embodiments;

[0057] Figure 20 This is a view showing a light source array and an external multi-view lens of a display device according to one or more embodiments;

[0058] Figure 21 This is a view showing a light source array and a multi-view lens of a display device according to one or more embodiments, spaced apart from each other by a predetermined distance; and

[0059] Figure 22 This is a view showing the light source array, multi-view lens, and display panel of a display device according to one or more embodiments. Detailed Implementation

[0060] The embodiments described in this disclosure and the configurations shown in the accompanying drawings are merely examples of embodiments of this disclosure, and various modifications may be made to replace the embodiments and drawings in this specification when this disclosure is submitted.

[0061] In the various figures of this disclosure, the same reference numerals or symbols denote parts or components that perform substantially the same function.

[0062] The terminology used in this specification is for the purpose of describing embodiments and is not intended to limit and / or restrict this disclosure. For example, singular expressions herein may include plural expressions unless the context clearly specifies otherwise. Furthermore, the terms “comprising” and “having” in this specification are intended to mean the presence of the features, numbers, steps, operations, components, parts or combinations thereof described in the specification, and do not exclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0063] It will be understood that although ordinal terms such as "first," "second," etc., used in this specification may be used to describe various components, these components should not be limited by these terms, and these terms are used only to distinguish one component from another. For example, a first component may be referred to as a second component without departing from the scope of this disclosure, and similarly, a second component may be referred to as a first component. The term "and / or" includes any combination of multiple related items or any one of multiple related items.

[0064] The terms “unit,” “module,” “component,” and “block” used in this specification may be implemented as hardware or software, and according to the implementation, multiple “units,” “modules,” “components,” and “blocks” may be implemented as a component, or a “unit,” “module,” “component,” and “block” may include multiple components.

[0065] Various embodiments of this disclosure will be described in detail below with reference to the accompanying drawings.

[0066] In reference Figures 1 to 22In the description of various embodiments of this disclosure, the terms "front-back direction," "vertical direction," "horizontal direction (left-right direction)," etc., used in the following description are defined relative to the drawings, and the shape and position of each component are not limited by these terms. For example, the term "front-back direction" may refer to a direction parallel to the Z direction relative to the drawings. For example, the term "vertical direction" may refer to a direction parallel to the Y direction relative to the drawings. For example, the term "horizontal direction (left-right direction)" may refer to a direction parallel to the X direction relative to the drawings.

[0067] Figure 1 It is a perspective view of a display device according to one or more embodiments.

[0068] Reference Figure 1 The display device 1 according to various embodiments of the present disclosure is an apparatus capable of processing image signals received from the outside and visually displaying the processed image.

[0069] For example, the display device 1 according to various embodiments of the present disclosure can be implemented in various forms, such as a television (TV), a monitor as a computer output device, a portable multimedia device, a portable communication device, etc. For example, the display device 1 according to various embodiments of the present disclosure can be a large-format display (LFD) installed outdoors (such as on the roof of a building and at a bus stop). Here, "outdoor" is not necessarily limited to the outdoors, and the display device 1 according to various embodiments of the present disclosure can be installed in any indoor location where many people can enter and leave, such as, for example, a subway station, shopping mall, cinema, company, and shop. As long as the display device 1 according to various embodiments of the present disclosure is a device for visually displaying images, its type is not limited to the types described above.

[0070] For example, display device 1 can be mounted upright on an indoor or outdoor floor or furniture. For example, display device 1 can be mounted on the surface of a wall or inside a wall of a building or other structure. For example, display device 1 can be mounted on a wall using a wall-mounting device.

[0071] Figure 1 The illustration shows a display device 1 as a flat panel display device with a flat screen, but the implementation is not limited thereto, and the display device 1 according to various embodiments of the present disclosure may include a curved display device or a flexible or bendable display device capable of changing between a flat state and a curved state. The configurations of the present disclosure described below can be applied to display devices of various shapes, regardless of the screen size or aspect ratio of the display device.

[0072] Display device 1 can receive content, including video and audio signals, from various content sources and output video and audio corresponding to the video and audio signals. For example, display device 1 can receive content data via a broadcast receiving antenna or wired cable, receive content data from a content playback device, or receive content data from a content provider's content delivery server.

[0073] Display device 1 can display images corresponding to video data and output sound corresponding to audio data. For example, display device 1 can recover multiple image frames included in video data and display multiple image frames continuously. In addition, display device 1 can recover audio signals included in audio data and output sound continuously according to the audio signals.

[0074] Display device 1 may include a screen S configured to display images. The screen S may be disposed on one surface of display device 1. The side on which the screen S is disposed may be defined as the front side of display device 1. The screen S may be disposed on the front surface of display device 1. The screen S may be configured to display images in front of the device. For example, the screen S may display still images or moving images. For example, the screen S may display two-dimensional planar images or three-dimensional stereoscopic images.

[0075] Multiple 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 multiple pixels P. For example, an image can be formed on the screen S by combining the light emitted from the multiple pixels P in a mosaic-like manner.

[0076] Each of the multiple pixels P can emit light of various brightness and color. For example, each of the multiple pixels P can include sub-pixels P. R P G and P B And sub-pixel P R P G and P B It can include a red sub-pixel P that can emit red light. R Green sub-pixels P that can emit green light G And blue sub-pixels P that can emit blue light B For example, red light can represent light with wavelengths from about 620 nm (nanometer, one billionth of a meter) to 750 nm, green light can represent light with wavelengths from about 495 nm to 570 nm, and blue light can represent light with wavelengths from about 450 nm to 495 nm.

[0077] Each of the multiple pixels P can be combined from the red sub-pixel P separately. R Green sub-pixel P G and blue sub-pixel P BThe emitted light can emit light of various brightness and color.

[0078] For example, the screen S of the display device 1 may have a substantially rectangular shape. The screen S may have a first side s1 and a second side s2. The screen S may have a rectangular shape having a pair of first sides s1 and a pair of second sides s2 that are parallel to each other.

[0079] For example, the first side s1 of screen S can be parallel to the horizontal direction X, and the second side s2 of screen S can be parallel to the vertical direction Y. For example, the first side s1 of screen S can be the longer side, and the second side s2 of screen S can be the shorter side. Figure 1 As shown, the screen S may have a longer side parallel to the horizontal direction X (e.g., the first side s1) and a shorter side parallel to the vertical direction Y (e.g., the second side s2), but is not limited thereto. Furthermore, the screen S of the display device 1 according to various embodiments of the present disclosure may have a longer side parallel to the vertical direction Y and a shorter side parallel to the horizontal direction X. As another example, the screen S of the display device 1 according to various embodiments of the present disclosure may be configured as a square, wherein the lengths of the first side s1 and the second side s2 are substantially the same. As yet another example, in addition to a rectangular shape, the screen S of the display device 1 according to various embodiments of the present disclosure may have various shapes, such as, for example, polygons and circles.

[0080] Figure 2 It is a view showing an image provided from multiple viewpoints by a display device according to one or more embodiments.

[0081] refer to Figure 2 The display device 1 according to embodiments of the present disclosure can be configured to provide different images to a viewpoint V facing the screen S. The display device 1 can be configured to display different images on the screen S according to the viewpoint. The display device 1 can use an automatic stereoscopic vision method that provides different images according to the viewpoint by separating multiple different images and displaying them on the screen S.

[0082] Display device 1 can be configured to provide multiple different images to multiple viewpoints V. Viewpoints V are formed in an area (hereinafter referred to as the "viewing area") at a certain distance d from the screen S in the forward direction Z, and can be defined as the point from which a viewer views the image displayed on the screen S. The viewing area can be divided into multiple viewpoints, and the multiple viewpoints V can be arranged in one direction along the viewing area.

[0083] Hereinafter, the front of the image displayed on screen S is defined as "first direction Z", and the direction in which the multiple viewpoints V are arranged is defined as "second direction X". First direction Z may be parallel to the direction in which the light emitted by the light source array 20, which will be described later, is emitted. Second direction X may be different from first direction Z. For example, second direction X may be perpendicular to first direction Z, but is not limited thereto, and the angle between first direction Z and second direction X may not be perpendicular. For example, second direction X may be parallel to the first side s1 of screen S. For example, second direction X may be parallel to the long side of screen S. As another example, second direction X may be parallel to the short side of screen S. For example, second direction X may be parallel to the horizontal direction of display device 1, which is parallel to the ground. As another example, second direction X may be parallel to the vertical direction of display device 1, which is perpendicular to the ground.

[0084] Hereinafter, a direction different from the first direction Z and the second direction X will be defined as the third direction Y. For example, the third direction Y may be perpendicular to the first direction Z and the second direction X, but is not limited thereto, and the third direction Y may not be perpendicular to the first direction Z or the second direction X. Although the accompanying drawings show 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, various embodiments of this disclosure are not limited thereto.

[0085] The properties of light emitted from display device 1 can be defined by a light field. A light field can be defined as a function of the direction and intensity of light travel at each point in three-dimensional space. Display device 1 can control the light field emitted from screen S, so that only a specific image is visible at a specific viewpoint among multiple viewpoints V. By allowing only specific images to be viewed from specific viewpoints, different images can be provided to multiple viewpoints.

[0086] For example, refer to Figure 2 Light L1a traveling from a first point P1 on screen S to a first viewpoint VA, light L2a traveling from a first point P1 to a second viewpoint VB, light L3a traveling from a first point P1 to a third viewpoint VC, and light L4a traveling from a first point P1 to a fourth viewpoint VD can provide different images. The combinations of sub-pixels providing the light L1a from the first point P1 on screen S towards the first viewpoint VA, the combinations of sub-pixels providing the light L2a from the first point P1 towards the second viewpoint VB, the combinations of sub-pixels providing the light L3a from the first point P1 towards the third viewpoint VC, and the combinations of sub-pixels providing the light L4a from the first point P1 towards the fourth viewpoint VD can be different from each other. For example, when viewing the first point P1 on screen S from the first viewpoint VA, when viewing the first point P1 on screen S from the second viewpoint V2, when viewing the first point P1 on screen S from the third viewpoint V3, and when viewing the first point P1 on screen S from the fourth viewpoint V4, the viewer can perceive different images. Figure 2The first point P1 shown is exemplified as a point that is substantially adjacent to the center of the screen S in the second direction X, but is not limited thereto.

[0087] Similarly, for example, refer to Figure 2 The light L1b traveling from the second point P2 on screen S to the first viewpoint VA, the light L2b traveling from the second point P2 to the second viewpoint VB, the light L3b traveling from the second point P2 to the third viewpoint VC, and the light L4b traveling from the second point P2 to the fourth viewpoint VD can provide different images. The combinations of sub-pixels providing the light L1b from the second point P2 on screen S towards the first viewpoint VA, the combinations of sub-pixels providing the light L2b from the second point P2 towards the second viewpoint VB, the combinations of sub-pixels providing the light L3b from the second point P2 towards the third viewpoint VC, and the combinations of sub-pixels providing the light L4b from the second point P2 towards the fourth viewpoint VD can be different from each other. For example, when viewing the second point P2 on screen S from the first viewpoint VA, when viewing the second point P2 on screen S from the second viewpoint V2, when viewing the second point P2 on screen S from the third viewpoint V3, and when viewing the second point P2 on screen S from the fourth viewpoint V4, the viewer can perceive different images. Figure 2 The second point P2 shown is exemplified as a point that is substantially adjacent to the edge of the screen S in the second direction X, but is not limited thereto.

[0088] Therefore, a viewer can perceive different images displayed on the screen S according to viewpoint V. As described above, in order to provide multiple different images to multiple viewpoints V respectively, the display device 1 according to the embodiments of this disclosure may include a multi-viewpoint lens 100 (see...). Figure 3 and Figure 5 (etc.), the multi-viewpoint lens 100 is configured to separate from the light source 30 (see Figure 4 The multi-viewpoint lens 100 emits light and provides it to each viewpoint V. It may also be referred to as a "cylindrical lens." A detailed explanation will follow later.

[0089] In the foregoing, the viewing area has been explained as an example to be divided into four viewpoints VA, VB, VC and VD. However, this is for ease of explanation and illustration, and in various embodiments of this disclosure, the viewing area may be divided into various numbers of viewpoints.

[0090] According to embodiments of this disclosure, the display device 1 can be configured to provide images of points spaced apart from each other on the screen S to a plurality of viewpoints V. For example, viewpoints VA, VB, VC, and VD reached by light L1a, L2a, L3a, and L4a from a first point P1 can coincide with viewpoints VA, VB, VC, and VD reached by light L1b, L2b, L3b, and L4b from a second point P2. Therefore, the area of ​​the plurality of viewpoints V provided by the display device 1 can be expanded; for example, the display device 1 can provide a wider viewing area.

[0091] The configuration of the display device 1 for providing different images to multiple viewpoints V and providing a wider viewing area will be described in detail below with reference to various embodiments of the present disclosure.

[0092] Figure 3 This is an exploded perspective view showing the components of a display device according to one or more embodiments. Figure 4 This is a view showing a light source array and the light sources included in a display device according to one or more embodiments.

[0093] refer to Figure 3 and Figure 4 The display device 1 according to embodiments of the present disclosure may include a housing 10 configured to support various components of the display device 1. The various components of the display device 1 may be housed within the housing 10. The housing 10 may form the appearance of the display device 1.

[0094] For example, housing 10 may support light source array 20. For example, housing 10 may support multi-view lens 100. For example, housing 10 may support optical sheet 40. For example, housing 10 may support plate assembly 50.

[0095] The housing 10 may include a front frame 11. For example, the front frame 11 may support the front edge or side edge of the light source array 20. For example, the front frame 11 may have the shape of a generally rectangular frame.

[0096] The housing 10 may include a rear frame 12. For example, the rear frame 12 may cover the rear of the light source array 20. For example, the rear frame 12 may support the rear of the light source array 20. For example, the rear frame 12 may support the plate assembly 50. For example, the rear frame 12 may have a generally flat shape, but its shape is not limited to this.

[0097] The 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.

[0098] For example, the light source array 20 may have the shape of a generally rectangular plate. For example, the light source array 20 may have a shape that substantially corresponds to the screen S.

[0099] 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 parallel to each other and a pair of second sides 22 parallel to each other. For example, the first side 21 of the light source array 20 may be parallel to a second direction X. For example, the second side 22 of the light source array 20 may be parallel to a third direction Y. For example, the first side 21 of the light source array 20 may be parallel to the direction in which multiple viewpoints V are mutually divided and arranged (see...). Figure 2 ).

[0100] For example, the first side 21 of the light source array 20 may be parallel to the longer side of the screen S. As another example, the first side 21 of the light source array 20 may be parallel to the shorter side of the screen S. For example, the first side 21 of the light source array 20 may be parallel to the horizontal direction of the display device 1. As another example, the first side 21 of the light source array 20 may be parallel to the vertical direction of the display device 1.

[0101] The light source array 20 may include a plurality of light sources 30. Each of the plurality of light sources 30 may be configured to emit light in substantially the same direction. Each of the plurality of light sources 30 may be configured to emit light in a first direction Z. The light source array 20 may be formed by arranging the plurality of light sources 30 at regular intervals. The intervals between the plurality of light sources 30 may be regular or irregular. For example, the light source array 20 may include a plurality of light sources 30 arranged in multiple rows and columns. The rows of the light sources 30 may be an array extending in a second direction X. The columns of the light sources 30 may be an array extending in a third direction Y.

[0102] For example, light source 30 may include light-emitting diode elements (hereinafter referred to as "LEDs"). In light source array 20, multiple LEDs 30 may be arranged in multiple rows and multiple columns.

[0103] A predetermined number of light sources 30 arranged adjacent to each other in a plurality of light sources 30 can correspond to each pixel P of the screen S. A predetermined number of light sources 30 arranged adjacent to each other in a plurality of light sources 30 can form each pixel P of the screen S, and the plurality of light sources 30 can form an image as a whole.

[0104] The light source array 20 may include a light source substrate 25 on which multiple light sources 30 are mounted. The light source substrate 25 may include circuitry through which the multiple light sources 30 are electrically connected. The multiple light sources 30 can receive drive current through the circuitry of the light source substrate 25. For example, the light source substrate 25 may have the shape of a generally rectangular plate. The light source substrate 25 on which all the light sources 30 are mounted may be configured as a single entity, or it may be configured as multiple light source substrates 25 separated from each other.

[0105] The display device 1 according to embodiments of the present disclosure may include a self-emissive display device, wherein a light source array 20 using multiple LEDs as light sources 30 can independently display images. Furthermore, the light source array 20 of the display device 1 may include various types of display panels, such as self-emissive panels (e.g., organic light-emitting diode (OLED) and micro-LED panels) and light-receiving / emitting panels (e.g., liquid crystal display (LCD) panels). When the light source array 20 is a light-receiving / emitting display panel such as an LCD panel, each portion (e.g., a sub-pixel) of a pixel formed on the display panel can be defined as a light source 30.

[0106] The light source array 20 can be configured to emit light for providing different images to multiple viewpoints. A portion of the multiple light sources 30 can combine with each other to emit light, thereby providing a specific image (referred to as a first image) to a specific viewpoint (referred to as a first viewpoint) among the multiple viewpoints V, and another portion of the multiple light sources 30 can combine with each other to emit light, thereby providing a specific image (referred to as a second image) to a specific viewpoint (referred to as a second viewpoint) among the multiple viewpoints V that is different from the first viewpoint.

[0107] The number of multiple light sources 30 can be equal to or greater than the number of multiple viewpoints V included in the entire viewing area. The number of columns of multiple light sources 30 can be equal to or greater than the number of multiple viewpoints V included in the entire viewing area. The number of light sources 30 included in a row can be equal to or greater than the number of multiple viewpoints V included in the entire viewing area.

[0108] The display device 1 may include a multi-viewpoint lens 100 to direct light emitted from a plurality of light sources 30 toward respective designated viewpoints V. The multi-viewpoint lens 100 may be positioned in a first direction Z (e.g., forward) of the light source array 20. The multi-viewpoint lens 100 may be positioned in the first direction Z of each of the plurality of light sources 30. The multi-viewpoint lens 100 may be configured to direct light emitted from the plurality of light sources 30 to the corresponding designated viewpoint V. The multi-viewpoint lens 100 may alter the path of light emitted from the plurality of light sources 30 to direct light to each designated viewpoint V.

[0109] A detailed description of the structure and function of the multi-viewpoint lens 100 will be given later.

[0110] The display device 1 may include an optical sheet 40. The optical sheet 40 may be disposed between the light source array 20 and the multi-view lens 100. The optical sheet 40 may be disposed in a first direction Z of the light source array 20. The optical sheet 40 may be configured to control the characteristics of the light emitted from the light source array 20. For example, the optical sheet 40 may be configured to limit the angular range of light traveling from the light source array 20 toward the multi-view lens 100.

[0111] A detailed description of the structure and function of the optical element 40 will be given later.

[0112] The display device 1 may include various board assemblies 50. Electronic components may be mounted on the board assembly 50, and circuitry including the electronic components may be disposed on the board assembly 50. For example, the circuitry 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 configured to control and supply power to various components (such as the light source array 20) for performing the functions of the display device 1.

[0113] Board assembly 50 may include various circuit boards such as motherboards, power boards, and source boards.

[0114] For example, the motherboard can control the overall operation of the display device 1. The motherboard may include a processor and power management devices for driving the display device 1. The motherboard may include control circuitry for controlling components such as the light source array 20, a communication module, and a content receiver for receiving content data from a content source.

[0115] For example, the power board can be configured to supply power to various components of the display device 1. The power board 60 may include a switch-mode power supply (SMPS) board. The power board 60 may include power supply circuitry for supplying power to components such as the light source array 20.

[0116] For example, the source plate can control the light source array 20. The source plate can send drive signals to the light source array 20 to control the driving of each of the plurality of light sources 30. The source plate may include control circuitry for controlling the light source array 20.

[0117] The circuit boards of board assembly 50, such as the motherboard, power board, and source board, can be arranged independently or combined with each other. When the circuit boards are arranged independently, they can be electrically connected to each other to send and receive data, signals, or power. For example, the circuit boards of board assembly 50 can be electrically connected to each other via cables to perform functions for driving display device 1. The cables can include various types of cables, such as membrane cables, flexible flat cables (FFC), and flexible printed circuit boards (FPCB).

[0118] The display device 1 may include a cable provided for transmitting image data from the board assembly 50 to the light source array 20, a display driver integrated circuit (DDI) configured to process digital image data to output analog image signals, etc.

[0119] Reference above Figure 3 and Figure 4 The configuration of the display device 1 described is merely an example of the configurations that the display device 1 may include according to embodiments of the present disclosure, and the present disclosure is not limited thereto. The display device 1 according to various embodiments of the present disclosure may include various configurations for performing various functions of the display device 1.

[0120] Figure 5 This is an exploded view showing the light source array, multi-view lens, and optical sheet of a display device according to one or more embodiments. Figure 6 This is an enlarged view showing the light source array and multi-view lens of a display device according to one or more embodiments. Figure 7 This is an enlarged view showing the light source array and multi-view lens of a display device according to one or more embodiments.

[0121] See Figures 5 to 7 The display device 1 according to the embodiments of the present disclosure may include a light source array 20, which includes a plurality of light sources 30 and a multi-viewpoint lens 100 configured to change the direction of travel of light emitted from the light source array 20 to emit light to a designated viewpoint among a plurality of viewpoints V.

[0122] A multi-view lens 100 may be disposed in a first direction Z of the light source array 20. As an example, the multi-view lens 100 may be disposed adjacent to the front surface of the light source array 20. As an example, the multi-view lens 100 may be attached to the front surface of the light source array 20. As an example, an optical sheet 40 may be disposed between the light source array 20 and the multi-view lens 100, and the multi-view lens 100 may be attached to the front surface of the optical sheet 40 or disposed adjacent to it. As an example, the incident surface 101 of the multi-view lens 100, onto which light from the light source array 20 is incident, may be attached to the front surface of the optical sheet 40 or disposed adjacent to it. In embodiments where the optical sheet 40 is not disposed between the multi-view lens 100 and the light source array 20, the incident surface 101 of the multi-view lens 100 may be attached to the front surface of the light source array 20 or disposed adjacent to it.

[0123] As an example, the multi-view lens 100 can be fixed to the light source array 20 by adhesive or screws. As an example, the multi-view lens 100 can be fixed to the optical sheet 40 by adhesive or screws. In addition, the multi-view lens 100, the optical sheet 40, and the light source array 20 can be fixed to each other in various ways.

[0124] like Figure 5 As shown, a plurality of multi-viewpoint lenses 100 can be provided. Each of the plurality of multi-viewpoint lenses 100 can be disposed in a first direction Z of the light source array 20. The plurality of multi-viewpoint lenses 100 can be arranged relative to each other in a second direction X. Each of the plurality of multi-viewpoint lenses 100 can be configured to emit light incident from the plurality of light sources 30 to a designated viewpoint V among the plurality of viewpoints V.

[0125] Each of the plurality of multi-view lenses 100 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. When the plurality of multi-view lenses 100 are arranged in the horizontal direction of the display device 1, each of the plurality of multi-view lenses 100 may extend in the vertical direction. When the plurality of multi-view lenses 100 are arranged in the vertical direction of the display device 1, each of the plurality of multi-view lenses 100 may extend in the horizontal direction. When the plurality of multi-view lenses 100 are arranged in the long side direction of the display device 1, each of the plurality of multi-view lenses 100 may extend in the short side direction of the display device 1. When the plurality of multi-view lenses 100 are arranged in the short side direction of the display device 1, each of the plurality of multi-view lenses 100 may extend in the long side direction of the display device 1.

[0126] As another example, each of the plurality of multi-view lenses 100 may extend in a direction different from the first direction Z and the second direction X, but this 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 100 may extend in a direction inclined relative to the direction perpendicular to the first direction Z and the second direction X. When the plurality of multi-view lenses 100 are arranged in the horizontal direction of the display device 1, each of the plurality of multi-view lenses 100 may extend in a direction inclined relative to the vertical direction. When the plurality of multi-view lenses 100 are arranged in the vertical direction of the display device 1, each of the plurality of multi-view lenses 100 may extend in a direction inclined relative to the horizontal direction. When the plurality of multi-view lenses 100 are arranged in the long side direction of the display device 1, each of the plurality of multi-view lenses 100 may extend in a direction inclined relative to the short side direction of the display device 1. When the plurality of multi-view lenses 100 are arranged in the short side direction of the display device 1, each of the plurality of multi-view lenses 100 may extend in a direction inclined relative to the long side direction of the display device 1.

[0127] As an example, multiple multi-viewpoint lenses 100 may extend in directions parallel to each other.

[0128] The following will refer to Figure 6 and Figure 7The structure of one of the multiple multi-viewpoint lenses 100 and its corresponding light source array 20 is described in detail.

[0129] The light source array 20 may include a plurality of light sources 30 arranged in the second direction X. The light source array 20 may include a first light source 31 and a second light source 32 disposed in the second direction X of the first light source 31. The first light source 31 and the second light source 32 may be arranged in the second direction X. The terms "first light source 31" and "second light source 32" described below may each refer to a single light source element (e.g., an LED element), but are not limited thereto, and "first light source 31" may refer to one or more first light sources 31, and "second light source 32" may refer to one or more second light sources 32. For example, the first light source 31 may include a plurality of first light sources 31 arranged in the second direction X. For example, the first light source 31 may include a plurality of first light sources 31 arranged in the third direction Y. For example, the second light source 32 may include a plurality of second light sources 32 arranged in the second direction X. For example, the second light source 32 may include a plurality of second light sources 32 arranged in the third direction Y.

[0130] The first light source 31 can be configured to emit light for providing an image to a first viewpoint V1 among a plurality of viewpoints V. For example, the first viewpoint V1 can be located near the center portion of the plurality of viewpoints V.

[0131] The second light source 32 can be configured to emit light for providing an image to a second viewpoint V2 among a plurality of viewpoints V. The second viewpoint V2 can be located in a second direction X of the first viewpoint V1. For example, the second viewpoint V2 can be located closer to the edge of the plurality of viewpoints V than the first viewpoint V1. For example, the second viewpoint V2 can be located further away from the center of the plurality of viewpoints V than the first viewpoint V1.

[0132] The first viewpoint V1 and the second viewpoint V2 can be separated from each other. The first viewpoint V1 and the second viewpoint V2 are separated from each other in the viewing area and can be arranged in the second direction X.

[0133] The multi-viewpoint lens 100 can be configured to emit light emitted from the first light source 31 to a first viewpoint V1. The multi-viewpoint lens 100 may include a refractive portion 110, which is configured to emit light emitted from the first light source 31 to the first viewpoint V1.

[0134] The refractive portion 110 can be configured to refract light from the first light source 31. Light emitted from the first light source 31 can be incident on the refractive portion 110 through the incident surface 101 of the multi-viewpoint lens 100, and can be refracted while passing through the refractive portion 110. Light passing through the refractive portion 110 can be emitted through the emitting surface 111 of the refractive portion 110, and can travel to the first viewpoint V1. For example, the refractive portion 110 can be configured to refract light from the first light source 31 so that the refracted light reaches the first viewpoint V1 among multiple viewpoints V.

[0135] The refractive portion 110 may include various materials having a predetermined refractive index. The refractive portion 110 may also be referred to as a "refractive lens 110".

[0136] As an example, the emitting surface 111 of the refractive portion 110 may also have a curved surface that protrudes in the first direction Z. However, this disclosure is not limited thereto, and the emitting surface 111 may have various shapes that allow light passing through the refractive portion 110 to be refracted and propagated in parallel to the first viewpoint V1.

[0137] The refractive portion 110 can be disposed in the first direction Z of the first light source 31. The refractive portion 110 can be configured to refract light emitted from the first light source 31 in the first direction Z. In addition to light emitted from the first light source 31 in the first direction Z, the refractive portion 110 can also refract light emitted in a direction similar to the first direction Z, so that the refracted light travels to the first viewpoint V1.

[0138] The refractive portion 110 can be positioned adjacent to the first light source 31.

[0139] As described above, light emitted from the second light source 32 can pass through the multi-viewpoint lens 100 and travel in parallel to the second viewpoint V2. According to an embodiment, when the multi-viewpoint lens 100 is configured such that the path of light emitted from the second light source 32 is changed only by refraction and the light travels, the degree of change in the light path may not be significant enough, and the distance that the second viewpoint V2 can be spaced from the center of the entire viewing area may be limited. In this embodiment, the entire viewing area of ​​the display device 1 may not be wide enough. As the amount of light that needs to travel from the center of the viewing area to a viewpoint located further out increases, the path of light that needs to change angle through the multi-viewpoint lens 100 increases. However, in embodiments that only use light refraction, there may be limitations on the angle of light travel bending, which can narrow the width of the multiple viewpoints V or the width of the entire viewing area.

[0140] In the example, even when multiple multi-viewpoint lenses are arranged to provide multiple viewpoints, the display device 1 may not fully provide a viewing area with a wide width, but simply repeatedly provide a viewing area with a narrow width, when each of the multi-viewpoint lenses uses only the refraction of light.

[0141] In one example, the curvature of the multiview lens can be made relatively large (i.e., the radius of curvature can be relatively small) to increase the refraction angle of light. However, in this case, due to the relatively small radius of curvature, the center thickness of the multiview lens increases, which has the disadvantage of expected increased aberrations. Furthermore, as the radius of curvature of the multiview lens decreases, light incident on areas adjacent to the edge of the multiview lens may not pass through the multiview lens and may be totally internally reflected back to the light source 30. In this case, when light passes through another adjacent multiview lens, noise may appear in the image and image quality may be degraded (increased image crosstalk), the amount of light passing through the multiview lens decreases, the full width at half maximum (FWHM) of the transmitted light is limited, and the brightness of the screen S may decrease.

[0142] To address the aforementioned problems, according to an embodiment, the multi-viewpoint lens 100 may include a reflective portion 120. The reflective portion 120 may be configured to emit light emitted from the second light source 32 to the second viewpoint V2. The reflective portion 120 may be configured to reflect light emitted from the second light source 32. The reflective portion 120 may be configured to reflect light from the second light source 32 so that the reflected light travels to the second viewpoint V2.

[0143] The reflective portion 120 can be disposed in the first direction Z of the second light source 32. The reflective portion 120 can be configured to reflect light emitted from the second light source 32 in the first direction Z. In addition to light emitted from the first light source 31 in the first direction Z, the reflective portion 120 can also reflect light emitted in a direction similar to the first direction Z, so that the reflected light travels to the second viewpoint V2.

[0144] The reflecting portion 120 can be configured to reflect light emitted from the second light source 32 so as to intersect with the lens axis LL. For example, the lens axis LL can be an axis passing through the focal point F of the refractive portion 110 in the first direction Z. For example, the lens axis LL can be the optical axis of the refractive portion 110. The distance from the multi-view lens 100 to the point where the light emitted from the reflecting portion 120 intersects with the lens axis LL can be shorter than the distance from the multi-view lens 100 to the focal point F of the refractive portion 110.

[0145] The focal point F can be defined as the point where the light rays passing through the refracted portion 110 in the first direction Z intersect. For example, as... Figure 6 and Figure 7As shown, the first light source 31 may include a first central light source 31a and a second central light source 31b arranged in the second direction X. Light emitted from the first central light source 31a and light emitted from the second central light source 31b may each be incident on the incident surface 101 and incident on the refraction portion 110, and may be refracted as it passes through the refraction portion 110 to be emitted through the emitting surface 111 of the refraction portion 110. For example, the first viewpoint V1 may include a first central viewpoint V12 and a second central viewpoint V11 arranged along the second direction. Light from the first central light source 31a may be refracted by the refraction portion 110 to travel to the first central viewpoint V12, and light from the second central light source 31b may be refracted by the refraction portion 110 to travel to the second central viewpoint V11. Light emitted from the first central light source 31a along the first direction Z and passing through the refraction portion 110 and light emitted from the second central light source 31b along the first direction Z and passing through the refraction portion 110 may intersect at the focal point F.

[0146] When light emitted from the first light source 31, passing through the refraction portion 110, and traveling to the first viewpoint V1 is called the first light, and light emitted from the second light source 32, reflected by the reflection portion 120, and traveling to the second viewpoint V2 is called the second light, the first light and the second light can intersect each other. However, the first light at the first viewpoint V1 and the second light at the second viewpoint V2 can not overlap each other, and the first viewpoint V1 and the second viewpoint V2 can be separated from each other.

[0147] The angle at which the direction of travel of the second light emitted from the reflective portion 120 is tilted relative to the first direction Z (i.e., the front-to-back direction of the light source array 20) can be greater than the angle at which the direction of travel of the first light emitted from the refractive portion 110 is tilted relative to the first direction Z. For example, the angle at which light incident on the refractive portion 110 in the first direction Z is reflected can be greater than the angle at which light incident on the reflective portion 120 in the first direction Z is refracted.

[0148] Thus, because the reflecting portion 120 uses the reflection of light, it can change the direction of light travel to a larger angle compared to the case where only the refraction of light is used. When the light from the second light source 32 is bent and traveled at a relatively large angle by the reflecting portion 120, the width of the multiple viewpoints V can be increased.

[0149] The reflective part 120 can also be referred to as "reflector 120".

[0150] The reflecting portion 120 may include a reflecting surface 121 configured to reflect light. The reflecting surface 121 may be configured to reflect light from the second light source 32 to a second viewpoint V2. The reflecting surface 121 may be tilted relative to a first direction Z. For example, the reflecting surface 121 may be tilted relative to the first direction Z to move closer to the lens axis LL in the second direction X as the distance from the second light source 32 increases. For example, as the distance from the incident surface 101 of the multi-viewpoint lens 100 increases, the reflecting surface 121 may extend to move closer to the lens axis LL in the second direction X. For example, the reflecting surface 121 may extend to move closer to the refractive portion 110 in the second direction X as the distance from the second light source 32 increases.

[0151] As an example, the reflective surface 121 may have a curved surface. As an example, the reflective surface 121 may have a curved surface that protrudes in the outer direction of the multi-view lens 100. As an example, the reflective surface 121 may also have a curved surface whose tilt angle relative to the first direction Z increases as it moves away from the second direction X of the second light source 32.

[0152] According to an embodiment, the reflective portion 120 can be configured to have a predetermined refractive index. The reflective portion 120 may include a material with a predetermined refractive index filled between the incident surface 101 and the reflective surface 121. Light emitted from the second light source 32 can be incident on the reflective portion 120 through the incident surface 101 of the multi-viewpoint lens 100, and can be totally reflected by the reflective surface 121 while traveling within the reflective portion 120. That is, the reflective surface 121 can be configured to totally reflect light incident from the second light source 32 towards the reflective portion 120. Parameters such as the refractive index of the material included in the reflective portion 120 and the tilt angle of the reflective surface 121 can be appropriately set such that light from the second light source 32 is totally reflected to travel toward the second viewpoint V2.

[0153] The reflecting portion 120 may further include a refractive surface 122. The refractive surface 122 may be located at the point where the light reflected by the reflecting surface 121 travels. The refractive surface 122 may be configured to refract the light reflected by the reflecting surface 121 at a predetermined angle. For example, light emitted from the second light source 32 may be incident on the reflecting portion 120 through the incident surface 101 of the multi-viewpoint lens 100, and may be reflected by the reflecting surface 121, and then refracted while being emitted through the refractive surface 122. The light emitted from the refractive surface 122 may travel to the second viewpoint V2.

[0154] For example, the refractive surface 122 can also refract light in such a way that the angle of inclination of the direction of travel of the light reflected by the reflective surface 121 relative to the first direction Z is reduced.

[0155] The orientation of the refracting surface 122 can be appropriately set so that the light reflected by the reflecting surface 121 travels toward the second viewpoint V2.

[0156] However, the implementation is not limited to this, and for example, the light reflected by the reflective surface 121 can be configured to be substantially non-refracted through the surface through which it is emitted from the reflective portion 120 toward the second viewpoint V2.

[0157] The reflective portion 120 can be positioned adjacent to the second light source 32. The reflective portion 120 can be positioned in the first direction Z of the second light source 32.

[0158] The reflecting portion 120 can be positioned adjacent to the refractive portion 110. The reflecting portion 120 can be positioned in the second direction X of the refractive portion 110. The refractive portion 110 and the reflecting portion 120 can be arranged in the second direction X.

[0159] The reflecting portion 120 can be connected to the refractive portion 110. For example, the reflecting portion 120 can be integrally formed with the refractive portion 110. For example, the multi-viewpoint lens 100 can be configured as an integrated lens. However, this disclosure is not limited thereto, and the reflecting portion 120 and the refractive portion 110 can be provided as separate configurations.

[0160] According to the implementation method, such as Figure 6 and Figure 7 As shown, the second light source 32 may include a first edge light source 32a and a second edge light source 32b spaced apart from each other. The first edge light source 32a and the second edge light source 32b may be spaced apart from each other in the second direction X. The first light source 31 may be disposed between the first edge light source 32a and the second edge light source 32b. The first center light source 31a and the second center light source 31b may be disposed between the first edge light source 32a and the second edge light source 32b. The first edge light source 32a may be disposed on one side of the first light source 31 in the second direction X. The second edge light source 32b may be disposed on the opposite side of the first light source 31 in the second direction X, opposite to the first edge light source 32a. For example, the first edge light source 32a may be disposed on one side of the first center light source 31a in the second direction X, and the second edge light source 32b may be disposed on the opposite side of the second center light source 31b in the second direction X, opposite to the first edge light source 32a and / or the first center light source 31a.

[0161] The reflecting portion 120 may include a first reflecting portion 120a configured to reflect light emitted from the first edge light source 32a. Light emitted from the first edge light source 32a may be incident on the first reflecting portion 120a via the incident surface 101 and then reflected by the reflecting surface 121 of the first reflecting portion 120a. As an example, light reflected by the reflecting surface 121 may be emitted and refracted via the refractive surface 122 of the first reflecting portion 120a.

[0162] The first reflecting portion 120a may be disposed on one side of the refractive portion 110 in the second direction X.

[0163] The first reflective portion 120a can be positioned in the first direction Z of the first edge light source 32a.

[0164] The reflecting portion 120 may include a second reflecting portion 120b configured to reflect light emitted from the second edge light source 32b. Light emitted from the second edge light source 32b may be incident on the second reflecting portion 120b via the incident surface 101 and then reflected by the reflecting surface 121 of the second reflecting portion 120b. As an example, light reflected by the reflecting surface 121 may be emitted and refracted via the refractive surface 122 of the second reflecting portion 120b.

[0165] The second reflective portion 120b can be disposed on the opposite side of the refractive portion 110 in the second direction X, opposite to the first reflective portion 120a. The refractive portion 110 can be placed between the first reflective portion 120a and the second reflective portion 120b.

[0166] The second reflective portion 120b can be positioned in the first direction Z of the second edge light source 32b.

[0167] The second viewpoint V2 may include a first edge viewpoint V22 and a second edge viewpoint V21. The first edge viewpoint V22 and the second edge viewpoint V21 may be spaced apart from each other in the second direction X. The first viewpoint V1 may be located between the first edge viewpoint V22 and the second edge viewpoint V21. A first central viewpoint V12 and a second central viewpoint V11 may be located between the first edge viewpoint V22 and the second edge viewpoint V21. The first edge viewpoint V22 may be located from the first viewpoint V1 in the second direction X. The second edge viewpoint V21 may be located on the opposite side of the first viewpoint V1 in the second direction X, opposite to the first edge viewpoint V22. For example, the first edge viewpoint V22 may be located on one side of the first central viewpoint V12 in the second direction X, and the second edge viewpoint V21 may be located on the opposite side of the second central viewpoint V11 in the second direction X, opposite to the first edge viewpoint V22 and / or the first central viewpoint V12.

[0168] The first reflecting portion 120a can be configured to reflect light emitted from the first edge light source 32a to the first edge viewpoint V22. The first reflecting portion 120a can be configured to reflect light emitted from the first edge light source 32a so as to intersect with the lens axis LL. The light from the first edge light source 32a can have a path altered by the first reflecting portion 120a to travel to the first edge viewpoint V22.

[0169] The second reflective portion 120b can be configured to reflect light emitted from the second edge light source 32b to the second edge viewpoint V21. The second reflective portion 120b can be configured to reflect light emitted from the second edge light source 32b so as to intersect with the lens axis LL. Light from the second edge light source 32b can have a path altered by the second reflective portion 120b to travel to the second edge viewpoint V21.

[0170] The reflective surface 121 of the first reflective portion 120a and the reflective surface 121 of the second reflective portion 120b may each be tilted relative to the first direction Z. The reflective surface 121 of the first reflective portion 120a and the reflective surface 121 of the second reflective portion 120b may be arranged to be closer to each other in the second direction X as the distance from the light source 30 in the first direction Z increases.

[0171] With this configuration, in various embodiments of this disclosure, the multi-viewpoint lens 100 can emit light from the light source array 20 over a wider angular range, and the display device 1 can provide a wider viewing area.

[0172] although Figure 6 and Figure 7 The illustration shows an embodiment of a light source array 20 including four light sources 30 having a first central light source 31a, a second central light source 31b, a first edge light source 32a, and a second edge light source 32b, and a plurality of viewpoints V including four viewpoints V having a first central viewpoint V12, a second central viewpoint V11, a first edge viewpoint V22, and a second edge viewpoint V21 that are separated from each other. However, in various embodiments, the number of plurality of viewpoints V and the number of plurality of light sources 30 are not limited thereto.

[0173] Figure 8 This is a view illustrating an example of a multi-view lens of a display device according to one or more embodiments having a flat reflective surface.

[0174] refer to Figure 8 The multi-view lens 100-1 of the display device 1 according to the embodiments of the present disclosure may include a refractive portion 110 and a reflective portion 120-1. The detailed description of the features of the refractive portion 110 and the reflective portion 120-1 corresponds to the description of the refractive portion 110 and the reflective portion 120 in the above embodiments, and therefore their repeated description can be omitted.

[0175] The reflective portion 120-1 may include a reflective surface 121-1 configured to reflect light from the second light source 32. The reflective surface 121-1 may be configured to reflect light from the second light source 32 so that the reflected light travels to a second viewpoint V2. For example, the first reflective portion 120a-1 may include a reflective surface 121-1 configured to reflect light from the first edge light source 32a so that the reflected light travels to a first edge viewpoint V22. Similarly, the second reflective portion 120b-1 may include a reflective surface 121-1 configured to reflect light from the second edge light source 32b so that the reflected light travels to a second edge viewpoint V21.

[0176] The reflective surface 121-1 may have a flat shape. The reflective surface 121-1 may be formed as a plane. The reflective surface 121-1 may have a certain angle of inclination relative to the first direction Z. The reflective surface 121-1 may be tilted relative to the first direction Z so that it is closer to the lens axis LL in the second direction X as the distance from the second light source 32 increases.

[0177] Taking into account the refractive index of the reflective portion 120-1, the angle of the reflective surface 121-1 relative to the first direction Z can be appropriately set so that the light from the second light source 32 is totally reflected and travels toward the second viewpoint V2.

[0178] Figure 9 This is a view showing an example of a multi-view lens of a display device according to one or more embodiments having a coated reflective surface.

[0179] refer to Figure 9 The multi-view lens 100-2 of the display device 1 according to the embodiments of the present disclosure may include a refractive portion 110 and a reflective portion 120-2. The detailed description of the refractive portion 110 and the reflective portion 120-2 corresponds to the description of the refractive portion 110 and the reflective portion 120 or 120-1 in the above embodiments, and therefore their repeated description can be omitted.

[0180] The reflective portion 120-2 may include a reflective surface 121-2 configured to reflect light from the second light source 32. The reflective surface 121-2 may be configured to reflect light from the second light source 32 so that the reflected light travels to a second viewpoint V2. A coating layer CL may be applied to the reflective surface 121-2. For example, the coating layer CL may be applied to the outer surface of the reflective surface 121-2. For example, the coating layer CL may include a material with high light reflectivity, such as chromium (Cr). For example, the coating layer CL may be formed by depositing a material with relatively high light reflectivity onto the outer surface of the reflective surface 121-2. By forming the coating layer CL on the reflective surface 121-2, the light reflection efficiency on the reflective surface 121-2 can be further improved.

[0181] For example, the first reflective portion 120a-2 may include a reflective surface 121-2 configured to reflect light from the first edge light source 32a so that the reflected light travels to a first edge viewpoint V22, and a coating layer CL may be applied to the reflective surface 121-2 of the first reflective portion 120a-2. Similarly, the second reflective portion 120b-2 may include a reflective surface 121-2 configured to reflect light from the second edge light source 32b so that the reflected light travels to a second edge viewpoint V21, and a coating layer CL may be applied to the reflective surface 121-2 of the second reflective portion 120b-2.

[0182] Figure 10 This is a view showing an example of a multi-view lens of a display device according to one or more embodiments having a reflective portion including a mirror.

[0183] refer to Figure 10 The multi-view lens 100-3 of the display device 1 according to the embodiments of the present disclosure may include a refractive portion 110 and a reflective portion 120-3. The detailed description of the refractive portion 110 and the reflective portion 120-3 corresponds to the description of the refractive portion 110 and the reflective portion 120 or 120-2 in the above embodiments, and therefore their repeated description can be omitted.

[0184] According to an embodiment, the reflective portion 120-3 of the multi-view lens 100-3 may be formed separately from and spaced apart from the refractive portion 110. The reflective portion 120-3 may not be connected to the refractive portion 110.

[0185] According to an embodiment, the reflective portion 120-3 of the multi-viewpoint lens 100-3 may include a mirror configured to reflect light from the second light source 32. The reflective portion 120-3 may include a reflective surface 121-3, and the mirror may be disposed at least on the reflective surface 121-3 of the reflective portion 120-3. The mirror disposed on the reflective surface 121-3 may be tilted relative to the first direction Z so that it is closer to the lens axis LL in the second direction X as the distance from the second light source 32 in the first direction Z increases.

[0186] For example, the mirror disposed on the reflective surface 121-3 may have a structure in which a material with relatively high light reflectivity, such as chromium, is coated on a surface of a material such as glass or transparent plastic. Furthermore, the mirror of the reflective surface 121-3 may include mirrors of various structures known or to be known in the future.

[0187] Thus, the reflecting portion 120-3 may include a mirror for reflecting light, and light emitted from the second light source 32 may enter the reflecting portion 120-3, be directly reflected by the mirror of the reflecting surface 121-3 without passing through the reflecting portion 120-3, and travel to the second viewpoint V2.

[0188] Figure 11 It is a view showing light emitted from multiple light sources of a display device according to one or more embodiments passing through an optical sheet. Figure 12 It is a view showing light emitted by multiple light sources of a display device according to one or more embodiments passing through holes in an optical sheet.

[0189] Reference Figure 11 and Figure 12 The display device 1 according to embodiments of the present disclosure may include an optical sheet 40 configured to modify the characteristics of light incident on the multi-view lens 100. The optical sheet 40 may be disposed between the light source array 20 and the multi-view lens 100. The optical sheet 40 may be disposed between a plurality of light sources 30 and the multi-view lens 100.

[0190] In various embodiments, the image provided at the second viewpoint V2 by light emitted by the second light source 32 and reflected by the reflecting portion 120, and the image provided at the first viewpoint V1 by light emitted by the first light source 31 and refracted by the refractive portion 110, may not overlap to improve image quality. When the image provided to the first viewpoint V1 and the image provided to the second viewpoint V2 overlap, the overall image quality may deteriorate.

[0191] Because the light emitted from the second light source 32 must be incident on the reflective portion 120 adjacent to the edge of each multi-viewpoint lens 100, bend at a relatively large angle, and then travel to the second viewpoint V2 in order to avoid overlapping with the light from the first light source 31 in the viewing area, it is appropriate that the range of light (i.e., the emission width of light) is relatively small. For example, in order to prevent image crosstalk between multiple viewpoints V and improve image quality, the emission range of the light emitted from the second light source 32 and incident on the reflective portion 120 can be smaller than the emission range of the light emitted from the first light source 31 and incident on the refractive portion 110.

[0192] To achieve this function, the optical sheet 40 can be configured to limit the range of light emitted from the first light source 31 and incident on the refractive portion 110 to a first width R1. Furthermore, the optical sheet 40 can be configured to limit the range of light emitted from the second light source 32 and incident on the reflective portion 120 to a second width R2, which is smaller than the first width R1. With this configuration, the range of light incident on the reflective portion 120 can be smaller than the range of light incident on the refractive portion 110, and image crosstalk at viewpoint V can be prevented and / or reduced.

[0193] According to the implementation method, such as Figure 12 As shown, the optical sheet 40 may include: a first aperture 41 configured to allow at least a portion of light emitted from the first light source 31 to travel through to the refractive portion 110; and a second aperture 42 configured to allow at least a portion of light emitted from the second light source 32 to travel through to the refractive portion 120. For example, the first aperture 41 may be configured to transmit at least a portion of the light emitted from the first light source 31, and the second aperture 42 may be configured to transmit at least a portion of the light emitted from the second light source 32. Other portions of the optical sheet 40 not having the first aperture 41 and the second aperture 42 may be configured to restrict or block the travel of light.

[0194] The size d2 of the second aperture 42 can be smaller than the size d1 of the first aperture 41. Therefore, for example, based on the fact that the emission range of the light emitted from the first light source 31 and the second light source 32 is basically the same, the range of the light emitted from the second light source 32 and traveling in parallel to the reflective portion 120 may be more limited than the range of the light emitted from the first light source 31 and traveling in parallel to the refractive portion 110.

[0195] The first aperture 41 and the second aperture 42 of the optical sheet 40 may have the shape of a slit extending along the direction in which the multi-view lens 100 extends. For example, the first aperture 41 and the second aperture 42 of the optical sheet 40 may each extend in a third direction Y. As another example, the first aperture 41 and the second aperture 42 of the optical sheet 40 may each extend in a direction at an angle other than 90 degrees relative to the second direction X.

[0196] although Figure 11 and Figure 12 Only the first central light source 31a of the first light source 31 and the first edge light source 32a of the second light source 32 are shown, but the above content can be applied to the second central light source 31b and the second edge light source 32b respectively.

[0197] Figure 13 It is a view showing light emitted from multiple light sources of a display device according to one or more embodiments passing through an optical sheet including a high refractive index portion and a low refractive index portion. Figure 14 It is a view showing light emitted from multiple light sources of a display device according to one or more embodiments passing through an optical sheet including a high refractive index portion and a low refractive index portion. Figure 15 It is a view showing light emitted from multiple light sources of a display device according to one or more embodiments passing through an optical sheet including a high refractive index portion and a low refractive index portion.

[0198] See Figure 13 According to one embodiment of the present disclosure, the display device 1 may include an optical sheet 40-1 configured to refract light traveling from a light source 30 to a multi-viewpoint lens 100 to limit the range of light emitted from each light source 30.

[0199] Optical sheet 40-1 may include a high refractive index portion 41-1 and a low refractive index portion 42-1. The high refractive index portion 41-1 may include a material having a higher refractive index than the material included in the low refractive index portion 42-1. For example, light emitted from light source 30 may be refracted sequentially through the high refractive index portion 41-1 and the low refractive index portion 42-1 before incident on the multi-view lens 100. The high refractive index portion 41-1 may be positioned closer to light source 30, and the low refractive index portion 42-1 may be positioned closer to the multi-view lens 100. Light emitted from light source 30 may be refracted at the surface on which it incident on the high refractive index portion 41-1. Light passing through the high refractive index portion 41-1 may be refracted at the boundary between the high refractive index portion 41-1 and the low refractive index portion 42-1.

[0200] When light passes through the high refractive index portion 41-1 and the low refractive index portion 42-1, the width of the light emitted from the light source 30 can be limited. For example, when light passes through the high refractive index portion 41-1 and the low refractive index portion 42-1, the range of light emitted from the first light source 31 can be limited to a first width R1, and when light passes through the high refractive index portion 41-1 and the low refractive index portion 42-1, the range of light emitted from the second light source 32 can be limited to a second width R2, which is smaller than the first width R1.

[0201] To limit the range of light emitted by the first light source 31 and the range of light emitted by the second light source 32 to predetermined ranges, the refractive indices of the materials constituting the high-refractive-index portion 41-1 and the low-refractive-index portion 42-1 can be appropriately determined, for example. For instance, the refractive index of the high-refractive-index portion 41-1 through which light emitted from the first light source 31 passes and the refractive index of the high-refractive-index portion 41-1 through which light emitted from the second light source 32 passes can be different from each other. For example, the refractive index of the high-refractive-index portion 41-1 through which light emitted from the second light source 32 passes can be greater than the refractive index of the high-refractive-index portion 41-1 through which light emitted from the first light source 31 passes. As another example, the refractive index of the high-refractive-index portion 41-1 through which light emitted from the first light source 31 passes and the refractive index of the high-refractive-index portion 41-1 through which light emitted from the second light source 32 passes can be substantially the same.

[0202] To limit the range of light emitted from the first light source 31 and the range of light emitted from the second light source 32 to predetermined ranges, the shape of the boundary between the high-refractive-index portion 41-1 and the low-refractive-index portion 42-1 can be appropriately determined, for example. The high-refractive-index portion 41-1 through which light emitted from the first light source 31 passes and the high-refractive-index portion 41-1 through which light emitted from the second light source 32 passes can have different shapes, such as the direction, length, and size of the boundary with the low-refractive-index portion 42-1. As another example, the high-refractive-index portion 41-1 through which light emitted from the first light source 31 passes and the high-refractive-index portion 41-1 through which light emitted from the second light source 32 passes can have substantially the same shape.

[0203] As in Figure 13 In the embodiment illustrated in the figure, the high-refractive-index portion 41-1 of the optical sheet 40-1 can have a substantially trapezoidal cross-section. For example, the high-refractive-index portion 41-1 can also have a trapezoidal cross-section that narrows in width in the second direction X as it moves away from the light source 30 in the first direction Z. For example, the boundary between the high-refractive-index portion 41-1 and the low-refractive-index portion 42-1 can include a portion inclined at an angle of less than 90 degrees relative to the first direction Z and a portion set at approximately 90 degrees relative to the first direction Z. However, Figure 13 The shapes of the high refractive index portion 41-1 and the low refractive index portion 42-1 of the optical sheet 40-1 shown in the figure are merely examples.

[0204] As in Figure 14In the illustrated embodiment, the display device 1 may include an optical sheet 40-2, which includes a high-refractive-index portion 41-2 and a low-refractive-index portion 42-2. The high-refractive-index portion 41-2 of the optical sheet 40-2 may have a generally triangular cross-section. For example, the high-refractive-index portion 41-2 may have a triangular cross-section whose width narrows in the second direction X as it moves away from the light source 30 in the first direction Z. For example, the boundary between the high-refractive-index portion 41-2 and the low-refractive-index portion 42-2 may be inclined at an angle of less than 90 degrees relative to the first direction Z.

[0205] As in Figure 15 In the illustrated embodiment, the display device 1 may include an optical sheet 40-3, which includes a high-refractive-index portion 41-3 and a low-refractive-index portion 42-3. The high-refractive-index portion 41-2 of the optical sheet 40-3 may have a substantially partially elliptical cross-section. For example, the high-refractive-index portion 41-2 may also have a partially elliptical cross-section that narrows in width in the second direction X as it moves away from the light source 30 in the first direction Z. For example, the boundary between the high-refractive-index portion 41-2 and the low-refractive-index portion 42-2 may also include a curved surface.

[0206] The cross-section of the high refractive index portion 41-1, 41-2, or 41-3 above can be defined as a cross-section cut in a direction approximately perpendicular to the third direction Y.

[0207] Figure 14 The optical element 40-2 shown is... Figure 15 The optical properties of the optical sheet 40-3 shown can correspond to the reference. Figure 13 The optical properties of optical sheet 40-1 are described, therefore a detailed description is omitted.

[0208] With this configuration, the range width of light incident on the reflecting portion 120 can be smaller than the range width of light incident on the refractive portion 110, and image crosstalk at viewpoint V can be prevented and / or reduced.

[0209] although Figures 13 to 15 Only the first central light source 31a of the first light source 31 and the first edge light source 32a of the second light source 32 are shown, but the above content can be applied to the second central light source 31b and the second edge light source 32b respectively.

[0210] In various embodiments of this disclosure, the structure of the optical sheet is not limited to the above reference. Figures 11 to 15 The structures of the optical sheets 40, 40-1, 40-2 and 40-3 are described, and the display device 1 according to various embodiments may include various types of optical sheets.

[0211] Figure 16It is a view showing the light emitted from multiple light sources of a display device according to one or more embodiments traveling to a multi-view lens.

[0212] See Figure 16 According to the present disclosure, the display device 1 can be configured such that each of the plurality of light sources 30 emits light of a limited width toward the multi-viewpoint lens 100. The first light source 31 can be configured to emit light of a limited width toward the refractive portion 110, and the second light source 32 can be configured to emit light of a limited width toward the reflective portion 120.

[0213] For example, the first light source 31 can be configured to emit light of a first width R1 toward the refractive portion 110. The second light source 32 can be configured to emit light toward the reflective portion 120 with a second width R2 that is smaller than the first width R1. Each light source 30 itself may include various structures that can limit the emitted width of the light.

[0214] In such a case, for example, the optical sheet 40 may not be placed between the light source array 20 and the multi-viewpoint lens 100. However, since each of the plurality of light sources 30 emits light with a finite range width, the range width of the light incident on the reflecting portion 120 may be smaller than the range width of the light incident on the refractive portion 110, and image crosstalk at viewpoint V may be prevented and / or reduced.

[0215] although Figure 16 Only the first central light source 31a of the first light source 31 and the first edge light source 32a of the second light source 32 are shown, but the above content can be applied to the second central light source 31b and the second edge light source 32b respectively.

[0216] Figure 17 This is a view showing a plurality of adjacent light source arrays and a plurality of adjacent multi-viewpoint lenses included in a display device according to one or more embodiments.

[0217] Reference Figure 17 The display device 1 according to embodiments of the present disclosure may include a plurality of light source arrays 20 defined as spaced apart from each other and a plurality of multi-viewpoint lenses 100 each corresponding to the plurality of light source arrays 20. Figure 17 In this context, "multiple light source arrays 20" can refer to some of the light source arrays 20 within the overall light source array 20 of the display device 1. Figure 17 In this context, "multiple multi-view lenses 100" can refer to some of the multiple multi-view lenses 100 in the entire multi-view lens 100 of the display device 1.

[0218] Multiple light source arrays 20 can be arranged adjacent to each other. Multiple light source arrays 20 can be arranged adjacent to each other in the second direction X.

[0219] Multiple multi-viewpoint lenses 100 can be arranged adjacent to each other. Multiple multi-viewpoint lenses 100 can be arranged adjacent to each other in the second direction X.

[0220] Multiple light sources 30 included in a plurality of adjacent light source arrays 20 can emit light of different colors to form at least one pixel among a plurality of pixels P on a screen S. Light emitted from the plurality of light sources 30 included in the plurality of adjacent light source arrays 20 can pass through a plurality of multi-viewpoint lenses 100 and provide images of different colors, and images of different colors can be perceived by combining them at a plurality of viewpoints V respectively.

[0221] This will be referenced below. Figure 17 The embodiments shown are described in more detail below.

[0222] For example, the light source array 20 of the display device 1 may include a first light source array 20C1, a second light source array 20C2, and a third light source array 20C3 adjacent to each other. The first light source array 20C1 may include a plurality of first-color light sources 30C1 emitting light of a first color. The second light source array 20C2 may include a plurality of second-color light sources 30C2 emitting light of a second color. The third light source array 20C3 may include a plurality of third-color light sources 30C3 emitting light of a third color. The first-color light sources 30C1, the second-color light sources 30C2, and the third-color light sources 30C3 may each include the first light source 31 and the second light source 32 described above, and their repeated descriptions may be omitted.

[0223] The first, second, and third colors mentioned above can be different colors. The first, second, and third colors can be combined with each other to form the color of a pixel. For example, the first color can be red, the second color can be green, and the third color can be blue, but the colors are not limited to these.

[0224] The multi-view lens 100 of the display device 1 may include a first multi-view lens 100C1, a second multi-view lens 100C2, and a third multi-view lens 100C3 that are adjacent to each other. For example, the first multi-view lens 100C1 may correspond to a first light source array 20C1. For example, the second multi-view lens 100C2 may correspond to a second light source array 20C2. For example, the third multi-view lens 100C3 may correspond to a third light source array 20C3.

[0225] As an example, the first multi-view lens 100C1, the second multi-view lens 100C2, and the third multi-view lens 100C3 may have corresponding shapes (e.g., the same shape), but are not limited thereto.

[0226] For example, light emitted from the first light source 31 of the first color light source 30C1 can travel to the first viewpoint V1 through the refraction portion 110 of the first multi-viewpoint lens 100C1. Light emitted from the first light source 31 of the second color light source 30C2 can travel to the first viewpoint V1 through the refraction portion 110 of the second multi-viewpoint lens 100C2. Light emitted from the first light source 31 of the third color light source 30C3 can travel to the first viewpoint V1 through the refraction portion 110 of the third multi-viewpoint lens 100C3. Thus, a combination of multi-color light can be perceived at the first viewpoint V1.

[0227] For example, light emitted from the second light source 32 of the first color light source 30C1 can travel to the second viewpoint V2 through the reflection portion 120 of the first multi-viewpoint lens 100C1. Light emitted from the second light source 32 of the second color light source 30C2 can travel to the second viewpoint V2 through the reflection portion 120 of the second multi-viewpoint lens 100C2. Light emitted from the second light source 32 of the third color light source 30C3 can travel to the second viewpoint V2 through the reflection portion 120 of the third multi-viewpoint lens 100C3. Therefore, a combination of multi-color light can be perceived at the second viewpoint V2.

[0228] In this way, a pixel P on the screen S can be formed by multiple light source arrays 20C1, 20C2 and 20C3 arranged adjacent to each other and emitting light of different colors, as well as multiple multi-viewpoint lenses 100C1, 100C2 and 100C3 corresponding to them, and an image can be provided by combining multiple pixels P.

[0229] Furthermore, in the above example, all light sources 30C1 in the first light source array 20C1 emit light of the same first color, all light sources 30C2 in the second light source array 20C2 emit light of the same second color, and all light sources 30C3 in the third light source array 20C3 emit light of the same third color, but this is not a limitation. According to the embodiment, some light sources 30C1 included in the first light source array 20C1 may emit light of different colors, and this can also be applied to the second light source array 20C2 and the third light source array 20C3.

[0230] Figure 18 This is a view showing a light source array, a central multi-view lens, and an external multi-view lens of a display device according to one or more embodiments. Figure 19 This is a view showing a light source array and a central multi-view lens of a display device according to one or more embodiments. Figure 20 This is a view showing the light source array and external multi-view lens of a display device according to one or more embodiments.

[0231] Reference Figures 18 to 20The display device 1 according to the embodiments of the present disclosure may include a plurality of multi-view lenses 100 (e.g., a central multi-view lens 100A and an outer multi-view lens 100B) having different shapes depending on their positions in the display device 1.

[0232] According to one embodiment, the screen S of the display device 1 can extend in the second direction X. Furthermore, according to another embodiment, the screen S of the display device 1 can be configured such that a viewer can view the screen from various positions in the second direction X.

[0233] In this situation, when the multi-viewpoint lens 100 located in the region near the center of the screen S and the multi-viewpoint lens 100 located in the region near the edge of the screen S have the same shape, it is possible that an image may not be clearly provided to each of the multiple viewpoints V. For example, there is a possibility of a narrowed field of view.

[0234] Therefore, according to the embodiment, the refractive portion 110 of each of the plurality of multi-viewpoint lenses 100 can be configured to refract light, such that light from the first light source 31 (e.g., the first central light source 31a and the second central light source 31b) of each of the plurality of light source arrays 20 travels toward the same first viewpoint V1 (e.g., the first central viewpoint V12 and the second central viewpoint V11). Furthermore, the reflective portion 120 of each of the plurality of multi-viewpoint lenses 100 can be configured to reflect light, such that light from the second light source 32 (e.g., the first edge light source 32a and the second edge light source 32b) of each of the plurality of light source arrays 20 travels toward the same second viewpoint V2 (e.g., the first edge viewpoint V22 and the second edge viewpoint V21).

[0235] According to an embodiment, the display device 1 may include a central multi-view lens 100A and an external multi-view lens 100B with different shapes.

[0236] The display device 1 may include a plurality of light source arrays 20 spaced apart from each other. For example, the plurality of light source arrays 20 may include a central light source array 20A disposed in a region adjacent to the center of the screen S in a second direction X, and an outer light source array 20B disposed in the second direction X of the central light source array 20A. For example, the outer light source array 20B may be disposed further outward than the central light source array 20A in the second direction X. For example, the outer light source array 20B may be disposed in a region adjacent to the edge of the screen S in the second direction X.

[0237] The central light source array 20A and the external light source array 20B may each include a first light source 31 (e.g., a first central light source 31a and a second central light source 31b) and a second light source 32 (e.g., a first edge light source 32a and a second edge light source 32b).

[0238] A central multi-viewpoint lens 100A may correspond to a central light source array 20A. The central multi-viewpoint lens 100A may be disposed adjacent to the central light source array 20A. The central multi-viewpoint lens 100A may be disposed in a first direction Z of the central light source array 20A. The refractive portion 110 of the central multi-viewpoint lens 100A may refract light from a first light source 31 of the central light source array 20A to propagate the refracted light to a first viewpoint V1. For example, the refractive portion 110 of the central multi-viewpoint lens 100A may refract light from a first central light source 31a of the central light source array 20A to propagate the refracted light to a first central viewpoint V12, and may refract light from a second central light source 31b of the central light source array 20A to propagate the refracted light to a second central viewpoint V11. The reflective portion 120 of the central multi-viewpoint lens 100A may reflect light from a second light source 32 of the central light source array 20A to propagate the reflected light to a second viewpoint V2. For example, the first reflective portion 120a of the central multi-viewpoint lens 100A can refract light from the first edge light source 32a of the central light source array 20A to propel the refracted light to the first edge viewpoint V22, and the second reflective portion 120b of the central multi-viewpoint lens 100A can refract light from the second edge light source 32b of the central light source array 20A to propel the refracted light to the second edge viewpoint V21.

[0239] According to the embodiment, the configuration of the central multi-viewpoint lens 100A corresponds to the reference. Figures 5 to 17 The configuration of the multi-viewpoint lens 100 is described, so its detailed description can be omitted.

[0240] An external multi-viewpoint lens 100B may correspond to an external light source array 20B. The external multi-viewpoint lens 100B may be positioned adjacent to the external light source array 20B. The external multi-viewpoint lens 100B may be positioned in a first direction Z of the external light source array 20B. The refractive portion 110 of the external multi-viewpoint lens 100B may refract light from a first light source 31 of the external light source array 20B to propagate the refracted light to a first viewpoint V1. The reflective portion 120 of the external multi-viewpoint lens 100B may reflect light from a second light source 32 of the external light source array 20B to propagate the reflected light to a second viewpoint V2.

[0241] Since the external multi-viewpoint lens 100B is positioned on one side of the screen S relative to the center in the second direction X, the external multi-viewpoint lens 100B can have an asymmetrical shape, causing light to be emitted to one side relative to the second direction X. For example... Figure 18 and Figure 20 As shown, the external multi-view lens 100B may have an asymmetrical shape in the second direction X relative to the center of the external multi-view lens 100B.

[0242] For example, such as Figure 20 As shown, the external multi-view lens 100B may include a reflecting portion 120 and a refractive portion 110. The reflecting portion 120 of the external multi-view lens 100B may have a shape similar to one of the reflecting portions 120 (first reflecting portion 120a or second reflecting portion 120b) of the central multi-view lens 100A. However, the reflecting portion 120 of the external multi-view lens 100B may be configured to bend the direction of travel of light from the second light source 32 at a larger angle than that of the reflecting portion 120 of the central multi-view lens 100A. For example, the angle at which the direction of travel of light emitted from the reflecting portion 120 included in the external multi-view lens 100B is tilted relative to the first direction Z may be greater than the angle at which the direction of travel of light emitted from the reflecting portion 120 included in the central multi-view lens 100A is tilted relative to the first direction Z.

[0243] For example, the refractive portion 110 of the external multi-viewpoint lens 100B can be configured to refract light from the first central light source 31a and the second central light source 31b. For example, the refractive portion 110 of the external multi-viewpoint lens 100B can refract light from the first central light source 31a of the external light source array 20B to propagate the refracted light to the first central viewpoint V12, and can refract light from the second central light source 31b of the external light source array 20B to propagate the refracted light to the second central viewpoint V11.

[0244] For example, the refractive portion 110 may include multiple refractive portions with different curvatures (e.g., a first refractive portion 110a and a second refractive portion 110b). The emitting surfaces 111a of the first refractive portion 110a and emitting surfaces 111b of the second refractive portion 110b may have different radii of curvature, or they may be discontinuously connected to each other. For example, light from the first central light source 31a may be refracted by the first refractive portion 110a, and light from the second central light source 31b may be refracted by the second refractive portion 110b. However, this disclosure is not limited thereto, and in embodiments, the refractive portion 110 may include a continuous emitting surface or may have a uniform radius of curvature.

[0245] In an embodiment, when the reflective portion 120 of the external multi-viewpoint lens 100B is configured to reflect light from the first edge light source 32a of the second light source 32 to the first edge viewpoint V22, light from the second edge light source 32b can be refracted by the refractive portion 110 of the external multi-viewpoint lens 100B and proceed in parallel to the second edge viewpoint V21. For example, light from the second edge light source 32b can be refracted by the second refractive portion 110b of the external multi-viewpoint lens 100B and proceed in parallel to the second edge viewpoint V21.

[0246] The reflective portion 120 of the external multi-viewpoint lens 100B can reflect light emitted from the first edge light source 32a to intersect with the lens axis passing through the focal point of the refractive portion 110 (e.g., the first lens axis LL1 passing through the first focal point F1 and / or the second lens axis LL2 passing through the second focal point F2) and travel to the first edge viewpoint V22.

[0247] The refractive portion 110 (e.g., the second refractive portion 110b) of the external multi-viewpoint lens 100B can refract light emitted from the second edge light source 32b to intersect with the lens axis passing through the focal point of the refractive portion 110 (e.g., the first lens axis LL1 passing through the first focal point F1 and / or the second lens axis LL2 passing through the second focal point F2) and travel to the second edge viewpoint V21.

[0248] With this configuration, the display device 1 can provide the entire viewing area by using multiple multi-view lenses 100, which have different shapes depending on their position in the second direction X on the screen S, and the provided viewing area can have a wide width.

[0249] In the display device 1 according to the embodiment, a plurality of multi-view lenses 100 may be disposed relatively close to a plurality of light source arrays 20 to provide the entire viewing area. For example, the plurality of multi-view lenses 100 may be attached to and in contact with the front surface of the plurality of light source arrays 20 or the front surface of the optical sheet 40. In this case, light emitted from the plurality of light source arrays 20 may only be incident on the corresponding multi-view lens 100, and the image generated by light incident on non-corresponding multi-view lenses 100 may be prevented from being repeatedly perceived at the viewpoint.

[0250] Figure 21 This is a view showing the light source array and multi-viewpoint lenses of a display device according to an exemplary embodiment, spaced apart from each other by a predetermined distance.

[0251] Reference Figure 21 When describing some components of the display device 1 according to an embodiment of the present disclosure, references are made. Figures 1 to 20 The components corresponding to the components of the described embodiments are given the same reference numerals, and repeated descriptions may be omitted.

[0252] Reference Figure 21 In the display device 1 according to an embodiment of the present disclosure, the multi-viewpoint lens 200 may be spaced apart from the light source array 20 in the first direction Z.

[0253] The multi-viewpoint lens 200 can be located at a distance sd from the light source array 20 in the first direction Z. The distance sd can be determined as the distance at which light from a specific light source 30 from the light source array 20 can be simultaneously incident on two or more of the multiple multi-viewpoint lenses 200.

[0254] For example, such as Figure 21 As shown, light emitted from any of the light sources 30 included in the light source array 20 can simultaneously strike each of the first multi-view lens 200A, the second multi-view lens 200B, and the third multi-view lens 200C, and can travel after being refracted or reflected by each lens.

[0255] In this case, by using the multi-view lens 200, the display device 1 can provide multiple viewing areas with a wide range, and the same image can be repeatedly perceived in each viewing area.

[0256] For example, such as Figure 21 As shown, the display device 1 can provide X viewing area VX, Y viewing area VY and Z viewing area VZ that are separated from each other. The X viewing area VX, Y viewing area VY and Z viewing area VZ can be arranged to be separated from each other in the second direction X.

[0257] Multiple viewing areas VX, VY, and VZ can each include multiple viewpoints that are divided from each other.

[0258] For example, the X viewing area VX may include viewpoints VX11 and VX12, with light emitted from the first light source 31 traveling to viewpoints VX11 and VX12 while passing through one of the plurality of multi-viewpoint lenses 200 (e.g., the first multi-viewpoint lens 200A). Furthermore, the X viewing area VX may include viewpoints VX21 and VX22, with light emitted from the second light source 32 traveling to viewpoints VX21 and VX22 while passing through one of the plurality of multi-viewpoint lenses 200 (e.g., the first multi-viewpoint lens 200A).

[0259] For example, the Y-viewing region VY may include viewpoints VY11 and VY12 to which light emitted from the first light source 31 travels simultaneously through one of the plurality of multi-view lenses 200 (e.g., the second multi-view lens 200B). Furthermore, the Y-viewing region VY may include viewpoints VY21 and VY22 to which light emitted from the second light source 32 travels simultaneously through one of the plurality of multi-view lenses 200 (e.g., the second multi-view lens 200B).

[0260] For example, the Z-viewing region VZ may include viewpoints VZ11 and VZ12 to which light emitted from the first light source 31 travels simultaneously through one of the plurality of multi-view lenses 200 (e.g., the third multi-view lens 200C). Furthermore, the Z-viewing region VZ may include viewpoints VZ21 and VZ22 to which light emitted from the second light source 32 travels simultaneously through one of the plurality of multi-view lenses 200 (e.g., the third multi-view lens 200C).

[0261] For ease of explanation, Figure 21 Only the cases shown illustrate light emitted from the first central light source 31a of the first light source 31 traveling to the first central viewpoints VX12, VY12, and VZ12 of the viewing areas VX, VY, and VZ, respectively, and light emitted from the second edge light source 32b of the second light source 32 traveling to the second central viewpoints VX21, VY21, and VZ21 of the viewing areas VX, VY, and VZ, respectively. Light emitted from the second central light source 31b of the first light source 31 can also travel to the second central viewpoints VX11, VY11, and VZ11 of the viewing areas VX, VY, and VZ, respectively. Furthermore, light emitted from the first central light source 32a of the second light source 32 can travel to the first edge viewpoints VX22, VY22, and VZ22 of the viewing areas VX, VY, and VZ, respectively.

[0262] For example, the images perceived from the first central viewpoint VX12 of viewing region VX from X, the first central viewpoint VY12 of viewing region YV from Y, and the first central viewpoint VZ12 of viewing region VZ from Z can be substantially the same. Similarly, the images perceived from the second central viewpoint VX11 of viewing region VX from X, the second central viewpoint VY11 of viewing region YV from Y, and the second central viewpoint VZ11 of viewing region VZ from Z can be substantially the same. Likewise, the images perceived from the first edge viewpoint VX22 of viewing region VX from X, the first edge viewpoint VY22 of viewing region YV from Y, and the first edge viewpoint VZ22 of viewing region VZ from Z can be substantially the same. Finally, the images perceived from the second edge viewpoint VX21 of viewing region VX from X, the second edge viewpoint VY21 of viewing region YV from Y, and the second edge viewpoint VZ21 of viewing region VZ from Z can be substantially the same.

[0263] According to various embodiments, to prevent image noise, each light source 30 may be configured to emit light in a limited manner toward a specific portion of a particular multi-view lens (e.g., a first multi-view lens 200A, a second multi-view lens 200B, and a third multi-view lens 200C) included in the plurality of multi-view lenses 200. For example, each first light source 31 may be configured to emit light only in a limited manner toward the refractive portion of a particular multi-view lens included in the plurality of multi-view lenses 200. For example, each second light source 32 may be configured to emit light in a limited manner toward a specific portion of a particular multi-view lens (e.g., a first multi-view lens 200A, a second multi-view lens 200B, and a third multi-view lens 200C) included in the plurality of multi-view lenses 200. In various embodiments, various optical components configured to limit the travel of light may be provided in front of each of the plurality of light sources 30.

[0264] The configuration of the multi-view lens 200 corresponds to the reference. Figures 1 to 20 The cylindrical lens (100, etc.) is described, so its repeated description will be omitted.

[0265] Figure 22 This is a view showing the light source array, multi-view lens, and display panel of a display device according to one or more embodiments.

[0266] Reference Figure 22 When describing some components of the display device 1 according to an embodiment of the present disclosure, references are made. Figures 1 to 21 The components corresponding to the components of the described embodiments are given the same reference numerals, and repeated descriptions may be omitted.

[0267] Reference Figure 22 The display device 1 according to embodiments of the present disclosure may include a display panel 80 disposed in a first direction Z (i.e., front) of a light source array 20. In this case, the light source array 20 may serve as a backlight unit. The light source array 20 as a backlight unit can provide monochromatic light such as white and blue. The display panel 80 may include, for example, a liquid crystal display (LCD) panel.

[0268] According to the embodiment, a multi-view lens 300 can be disposed between the light source array 20 and the display panel 80. The multi-view lens 300 can control the path of light from the light source array 20 to emit light onto the display panel 80.

[0269] The configuration of the multi-view lens 200 corresponds to the reference. Figures 1 to 20 The description of the multi-viewpoint lens (100, etc.) will therefore be omitted.

[0270] The display device according to embodiments of the present disclosure may be a display device configured to provide multiple different images to multiple viewpoints. The display device may include: a light source array configured to emit light in a first direction; and a multi-viewpoint lens disposed in the first direction of the light source array. The light source array may include: a first light source configured to emit light to provide an image to a first viewpoint among multiple viewpoints; and a second light source disposed in a second direction different from the first light source, and configured to emit light to provide an image to a second viewpoint disposed in the second direction of the first viewpoint among multiple viewpoints. The multi-viewpoint lens may include: a refractive portion configured to refract light emitted from the first light source to the first viewpoint; and a reflective portion disposed in the second direction of the refractive portion and configured to reflect light emitted from the second light source to the second viewpoint.

[0271] The refractive portion may have a lens axis passing through the focal point of the refractive portion in a first direction. The reflective portion may include a reflective surface that is inclined relative to the first direction, so as to move closer to the lens axis in a second direction as the distance from the second light source increases.

[0272] The reflective portion can be configured to have a predetermined refractive index. The reflective portion may include a reflective surface configured to totally reflect light incident from the second light source.

[0273] The reflecting portion may also include a refracting surface located at the point where the light reflected by the reflecting surface travels. The refracting surface may be configured to refract the light reflected by the reflecting surface such that its angle of inclination relative to the first direction is reduced.

[0274] The second light source may include: a first edge light source disposed on one side of the first light source in a second direction; and a second edge light source disposed on the opposite side of the first light source in the second direction. The reflecting portion may include: a first reflecting portion disposed on one side of the refractive portion in the second direction and configured to reflect light emitted from the first edge light source; and a second reflecting portion disposed on the opposite side of the refractive portion in the second direction and configured to reflect light emitted from the second edge light source.

[0275] The second viewpoint may include a first edge viewpoint located on one side of the first viewpoint in a second direction, and a second edge viewpoint located on the opposite side of the first edge viewpoint in the second direction. A first reflecting portion may be configured to reflect light from a first edge light source to the first edge viewpoint. A second reflecting portion may be configured to reflect light from a second edge light source to the second edge viewpoint.

[0276] A multi-viewpoint lens can be adjacent to one surface of the light source array in the first direction.

[0277] The display device may further include an optical sheet disposed between the light source array and the multi-viewpoint lens. The optical sheet may be configured to limit the range of light emitted from the first light source and incident on the refractive portion to a first width. The optical sheet may also be configured to limit the range of light emitted from the second light source and incident on the reflective portion to a second width smaller than the first width.

[0278] The optical element may include: a first aperture configured to allow at least a portion of light emitted from a first light source to pass through to the refractive portion; and a second aperture disposed in a second direction of the first aperture and configured to allow at least a portion of light emitted from a second light source to pass through to the reflective portion. The size of the second aperture may be smaller than the size of the first aperture.

[0279] The first light source can be configured to emit light toward the refractive portion within a first width range. The second light source can be configured to emit light toward the reflective portion within a second width range smaller than the first width.

[0280] A light source array may include multiple light source arrays spaced apart from each other. A multi-viewpoint lens may include multiple multi-viewpoint lenses, each corresponding to multiple light source arrays. The refractive portion of each of the multiple multi-viewpoint lenses may be configured to refract light such that light from a first light source in each of the multiple light source arrays travels toward the same first viewpoint. The reflective portion of each of the multiple multi-viewpoint lenses may be configured to reflect light such that light from a second light source in each of the multiple light source arrays travels toward the same second viewpoint.

[0281] The light source array may include multiple light source arrays spaced apart from each other. The multiple light source arrays may include: a central light source array disposed at the center of the multiple light source arrays in a second direction; and an outer light source array located in the second direction of the central light source array. The multi-view lens may include multiple multi-view lenses. The multiple multi-view lenses may include a central multi-view lens disposed in a first direction of the central light source array, and an outer multi-view lens disposed in a first direction of the outer light source array.

[0282] The external multi-view lens can have a shape that is asymmetrical about the center in a second direction relative to the external multi-view lens.

[0283] The angle at which the light emitted from the reflective portion of the external multi-view lens travels relative to the first direction can be greater than the angle at which the light emitted from the reflective portion of the central multi-view lens travels relative to the first direction.

[0284] The first and second directions can be perpendicular to each other. A multi-viewpoint lens can extend upwards into a third direction, different from the first and second directions.

[0285] A display device according to embodiments of the present disclosure may include: a light source array configured to emit light in a first direction and including a first light source and a second light source arranged in a second direction different from the first direction; and a multi-viewpoint lens disposed in the first direction of the light source array. The multi-viewpoint lens may include: a refractive portion configured to refract light emitted from the first light source; and a reflective portion disposed in the second direction of the refractive portion and configured to reflect light emitted from the second light source to intersect with a lens axis passing through the focal point of the refractive portion in the first direction.

[0286] The reflective portion may include a reflective surface that is tilted relative to a first direction, thereby becoming closer in a second direction to the lens axis passing through the focal point of the refractive portion as it moves further away from the second light source.

[0287] The second light source may include: a first edge light source disposed on one side of the first light source in a second direction; and a second edge light source disposed on the opposite side of the first light source in the second direction. The reflecting portion may include: a first reflecting portion disposed on one side of the refractive portion in the second direction, for reflecting light emitted from the first edge light source to intersect with the lens axis; and a second reflecting portion disposed on the opposite side of the refractive portion in the second direction, for reflecting light emitted from the second edge light source to intersect with the lens axis.

[0288] A display device according to embodiments of the present disclosure may include: a light source array in which a plurality of light sources are arranged; and a multi-viewpoint lens disposed in front of the light source array. The plurality of light sources may include: a first light source configured to emit first light for providing a first image; and a second light source configured to emit second light for providing a second image different from the first image. The multi-viewpoint lens may include: a refractive portion configured to refract the first light in front of the first light source to a first viewpoint; and a reflective portion disposed near the refractive portion in front of the second light source and configured to reflect second light to intersect with the first light so that the reflected second light travels to a second viewpoint separate from the first viewpoint.

[0289] The angle at which the direction of the second light emitted from the reflective part is tilted relative to the front-back direction of the light source array can be greater than the angle at which the direction of the first light emitted from the refracting part is tilted relative to the front-back direction of the light source array.

[0290] According to this disclosure, the display device can provide different images to multiple viewpoints by including a multi-viewpoint lens disposed in front of a light source array.

[0291] According to this disclosure, the display device can increase the range of light in the direction of travel and expand the area of ​​multiple viewpoints by including a multi-view lens having a refractive portion and a reflective portion.

[0292] According to this disclosure, the display device can reduce image overlap at the viewpoint by controlling the direction of light travel using the refractive and reflective portions of a multi-viewpoint lens, thereby reducing image noise and improving image quality.

[0293] According to this disclosure, a display device can reduce image noise and improve image quality by including an optical sheet or a light source having such a structure, which is disposed between a multi-view lens and a light source array and controls the range of light incident on the multi-view lens.

[0294] According to this disclosure, the display device can prevent image brightness from decreasing by using the refractive and reflective portions of a multi-viewpoint lens, while simultaneously expanding the area of ​​multiple viewpoints.

[0295] The effects of this disclosure are not limited to those described above, and those skilled in the art to which this disclosure pertains will clearly understand from the following description other effects not mentioned.

[0296] The specific embodiments have been described and illustrated above. However, those skilled in the art should understand that this disclosure is not limited to the above embodiments, and various changes and modifications can be made without departing from the technical concept of this disclosure as described in the appended claims and their equivalents.

Claims

1. A display device configured to provide a plurality of different images to a plurality of viewpoints, the display device comprising: A light source array is configured to emit light in a first direction; and A multi-viewpoint lens is adjacent to the light source array in the first direction. The light source array includes: A first light source is configured to emit light to provide an image to a first viewpoint among the plurality of viewpoints; and A second light source, adjacent to the first light source in a second direction different from the first direction, is configured to emit light to provide an image to a second viewpoint among the plurality of viewpoints that is adjacent to the first viewpoint in the second direction. The multi-viewpoint lens includes: The refractive portion is configured to refract light emitted from the first light source to the first viewpoint; and A reflecting portion adjacent to the refractive portion in the second direction is configured to reflect light emitted from the second light source to the second viewpoint.

2. The display device according to claim 1, wherein, The refractive portion has a lens axis that passes through the focal point of the refractive portion in the first direction, and The reflective portion includes a reflective surface that is inclined relative to the first direction, such that as the distance from the second light source to the reflective portion increases in the second direction, the distance between the reflective portion and the lens axis decreases.

3. The display device according to claim 1, wherein, The reflective portion has a predetermined refractive index, and The reflective portion includes a reflective surface configured to totally reflect light incident from the second light source.

4. The display device according to claim 3, wherein, The reflective portion further includes a refractive surface configured to receive light reflected by the reflective surface. The refracting surface is configured to refract light reflected by the reflecting surface, such that the angle at which the refracted light is tilted relative to the first direction is reduced.

5. The display device according to claim 1, wherein, The second light source includes a first edge light source on a first side of the first light source in the second direction, and a second edge light source on a second side of the first light source opposite to the first side of the first light source. The reflective portion includes: A first reflecting portion, on a first side of the refractive portion in the second direction, is configured to reflect light emitted from the first edge light source; and The second reflective portion, located on the second side of the refractive portion opposite to the first side of the refractive portion, is configured to reflect light emitted from the second edge light source.

6. The display device according to claim 5, wherein, The second viewpoint includes: A first edge viewpoint, on the first side of the first viewpoint in the second direction; and The second edge viewpoint is located on the second side opposite to the first side of the first viewpoint. Wherein, the first reflective portion is configured to reflect light from the first edge light source to the first edge viewpoint, and The second reflective portion is configured to reflect light from the second edge light source to the second edge viewpoint.

7. The display device according to claim 1, wherein, The multi-viewpoint lens is adjacent to the surface of the light source array in the first direction.

8. The display device according to claim 1, further comprising: An optical element is located between the light source array and the multi-viewpoint lens. The optical sheet is configured as follows: The range of light emitted from the first light source and incident on the refractive portion is limited to a first width; and The range of light emitted from the second light source and incident on the reflective portion is limited to a second width that is less than the first width.

9. The display device according to claim 8, wherein, The optical sheet includes: The first aperture is configured to transmit at least a portion of light emitted from the first light source and traveling in parallel to the refractive portion; and The second aperture, adjacent to the first aperture in the second direction, is configured to transmit at least a portion of the light emitted from the second light source and traveling in parallel to the reflective portion. The size of the second hole is smaller than the size of the first hole.

10. The display device according to claim 1, wherein, The first light source is configured to emit light toward the refractive portion within a first width range, and The second light source is configured to emit light toward the reflective portion within a second width that is smaller than the first width.

11. The display device according to claim 1, wherein, The light source array comprises multiple light source arrays that are separated from each other. The multi-viewpoint lens includes multiple multi-viewpoint lenses that correspond to the multiple light source arrays respectively. Wherein, the refractive portion of each of the plurality of multi-viewpoint lenses is configured to refract light, such that light from the first light source from each of the plurality of light source arrays travels toward the same first viewpoint, and The reflective portion of each of the plurality of multi-viewpoint lenses is configured to reflect light such that light from the second light source from each of the plurality of light source arrays travels toward the same second viewpoint.

12. The display device according to claim 1, wherein, The light source array comprises multiple light source arrays that are separated from each other. The plurality of light source arrays include: The central light source array is located at the center of the plurality of light source arrays in the second direction; and An external light source array is adjacent to the central light source array in the second direction. The multi-viewpoint lens includes multiple multi-viewpoint lenses, and The plurality of multi-viewpoint lenses include: A central multi-viewpoint lens is adjacent to the central light source array in the first direction; and An external multi-viewpoint lens is adjacent to the external light source array in the first direction.

13. The display device according to claim 12, wherein, The external multi-view lens has an asymmetrical shape relative to the center of the external multi-view lens in the second direction.

14. The display device according to claim 12, wherein, The angle at which the direction of travel of light emitted from the reflective portion included in the external multi-view lens is tilted relative to the first direction is greater than the angle at which the direction of travel of light emitted from the reflective portion included in the central multi-view lens is tilted relative to the first direction.

15. The display device according to claim 1, wherein, The first direction and the second direction are perpendicular to each other, and The multi-viewpoint lens extends upward in a third direction, different from the first and second directions.

Images