Indication device

Abstract

A display device according to one embodiment of this specification includes a first light source unit including a plurality of first light sources, a light control unit including a plurality of partitions arranged on the first light source unit and overlapping with at least a portion of the display area, a second light source unit including a plurality of second light sources arranged on the light control unit, a light guide plate arranged alongside the second light source unit and guiding the light provided from the second light source unit, and a display panel arranged on the light guide plate and displaying an image using the light provided from the first light source unit or the second light source unit, wherein the heights of the plurality of partitions differ for each area.

Description

Technical Field

[0001] This specification relates to a display device, and more particularly to a display device capable of controlling a viewing angle.

Background Art

[0002] As technology in modern society develops, display devices are widely used to provide information to users. Display devices include not only electro-optical panels that simply transmit visual information in one direction, but also various electronic devices that require higher technologies to confirm user input and provide information corresponding to the confirmed input.

[0003] For example, a display device can be included in a vehicle to provide various information to the driver and passengers of the vehicle. However, the display device in the vehicle needs to appropriately display content so as not to interfere with the operation of the vehicle. For example, the display device needs to limit the display of content that may reduce the driver's concentration during vehicle operation.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The problem to be solved by this specification is to provide a display device that can provide content with a wide viewing angle in a first region of a display area and can provide content with a wide viewing angle or a narrow viewing angle in a second region depending on a driving mode.

[0005] Another problem to be solved by this specification is to provide a display device that can effectively control the viewing angle in a second mode that provides content with a narrow viewing angle in a second region, so that a user located on the first region side cannot view the video displayed in the second region.

[0006] Another problem to be solved by this specification is to provide a display device that can minimize the boundary visibility between a first region and a second region of a display panel.

[0007] The problems described herein are not limited to those mentioned above, and other problems not mentioned can be clearly understood by those skilled in the art from the following description. [Means for solving the problem]

[0008] An embodiment of the Specified Display Device includes a first light source unit including a plurality of first light sources, a light control unit including a plurality of partitions arranged on the first light source unit and overlapping with at least a portion of the display area, a second light source unit including a plurality of second light sources arranged on the light control unit, a light guide plate arranged alongside the second light source unit and guiding the light provided from the second light source unit, and a display panel arranged on the light guide plate and displaying an image using the light provided from the first light source unit or the second light source unit, wherein the heights of the plurality of partitions may differ for each area.

[0009] Another embodiment of the Specified Information includes a cover, a first light source unit disposed on the bottom of the cover and including a plurality of first light sources, an optical sheet disposed on the first light source unit, one end of which is supported by a first side of the cover and the other end of which is supported by a second side of the cover, a first fixing member disposed on the upper part of one end of the optical sheet, a second fixing member disposed on the upper part of the other end of the optical sheet, an optical control unit disposed on the optical sheet, one end of which is supported by the first fixing member and the other end of which is supported by the second fixing member, and including a plurality of partitions disposed in overlap with at least a portion of the display area, a light guide plate disposed on the optical control unit, one end of which is supported by a third side of the cover and the other end of which is supported by a fourth side of the cover, a second light source unit disposed alongside the light guide plate and including a plurality of second light sources, and a display panel disposed on the light guide plate that displays an image using light provided from the first light source unit or the second light source unit.

[0010] A display device according to yet another embodiment of this specification includes a cover, a first light source unit disposed on the bottom of the cover and including a plurality of first light sources, an optical sheet disposed on the first light source unit and supported at one end by a first side of the cover and the other end by a second side of the cover, a light control unit disposed on the optical sheet and including a plurality of partitions arranged to overlap with at least a portion of the display area, a light guide plate disposed on the light control unit and supported at one end by a third side of the cover and the other end by a fourth side of the cover, a second light source unit disposed alongside the light guide plate and including a plurality of second light sources, and a display panel disposed on the light guide plate and displaying an image using light provided from the first light source unit or the second light source unit, wherein the height from the bottom to the top surface of the first side may differ from the height from the bottom to the second side.

[0011] Specific details of other embodiments are included in the detailed description and drawings. [Effects of the Invention]

[0012] This specification describes how, by controlling the emission of some of the multiple light sources located at the bottom of the display panel according to the drive mode, the first mode controls both the first and second regions to wide-view mode, and the second mode controls the first region to wide-view mode and the second region to narrow-view mode.

[0013] This specification allows the light supplied to the display panel to be shifted to the second region so that the image displayed in the second region is not visible to a user located in the first region, thereby enabling effective control of the viewing angle in the second mode.

[0014] This specification describes a design in which the height of the partition wall for controlling the field of view for each region gradually changes near the boundary between the first and second regions, thereby minimizing the visibility of the boundary between the first and second regions.

[0015] The effects described herein are not limited to those exemplified above, and a wider variety of effects are included within this specification. [Brief explanation of the drawing]

[0016] [Figure 1] It is an exemplary diagram of a display device according to an embodiment of this specification. [Figure 2] It is an exploded perspective view of a display device according to an embodiment of this specification. [Figure 3] It is a diagram showing an example of a display panel included in a display device according to an embodiment of this specification. [Figure 4] It is a side view schematically showing an example of an optical control unit included in the display device of FIG. 2. [Figure 5a] It is an enlarged view showing an example of the EA1 portion of FIG. 4. [Figure 5b] It is an enlarged view showing an example of the EA2 portion of FIG. 4. [Figure 5c] It is an enlarged view showing an example of the EA3 portion of FIG. 4. [Figure 6] It is a side view schematically showing another example of the optical control unit included in the display device of FIG. 2. [Figure 7a] It is an enlarged view showing an example of the EA4 portion of FIG. 6. [Figure 7b] It is an enlarged view showing an example of the EA5 portion of FIG. 6. [Figure 8] It is a side view schematically showing still another example of the optical control unit included in the display device of FIG. 2. [Figure 9] It is an enlarged view showing an example of the EA6 portion of FIG. 8. [Figure 10] It is a side view schematically showing still another example of the optical control unit included in the display device of FIG. 2. [Figure 11] It is a side view of a display device according to another embodiment of this specification. [Figure 12] It is a side view showing an example of the optical control unit included in the display device of FIG. 11. [Figure 13] It is a side view of a display device according to still another embodiment of this specification.

Modes for Carrying Out the Invention

[0017] The advantages and features of this specification, and the methods for achieving them, will become clearer with reference to the examples described below in detail with the accompanying drawings. However, this specification is not limited to the examples disclosed below, but can be embodied in a variety of different forms, and these examples are provided merely to make the disclosure of this specification complete and to fully inform a person with ordinary skill in the art to which this specification belongs.

[0018] The shapes, areas, proportions, angles, numbers, etc. disclosed in the drawings illustrating the embodiments of this specification are illustrative and the specification is not limited to those illustrated. Throughout the specification, the same reference numerals refer to the same components. Furthermore, in describing this specification, if it is determined that a specific explanation of related prior art would unnecessarily obscure the gist of this specification, such detailed explanation will be omitted. Where "includes," "has," "is made," etc., are used in this specification, other parts may be added unless "only" is used. When a component is expressed singularly, it includes cases where it includes multiple components unless otherwise explicitly stated.

[0019] When interpreting the constituent elements, they shall be interpreted as including a margin of error, even if not explicitly stated otherwise.

[0020] When describing a spatial relationship, for example, when describing the positional relationship between two parts using phrases like "on top," "above," "below," or "next to," it is acceptable for one or more other parts to be located between the two parts, as long as "immediately" or "directly" is not used.

[0021] When an element or layer is referred to as "on" another element or layer, this includes cases where another layer or other element is interposed immediately above or between the other element.

[0022] Furthermore, while terms such as "first," "second," etc., are used to describe a variety of components, these components are not limited by these terms. These terms are simply used to distinguish one component from another. Therefore, the first component referred to below may also be the second component within the technical concept of this specification.

[0023] Throughout the specification, the same reference numeral refers to the same component.

[0024] The area and thickness of each component shown in the drawings are provided for illustrative purposes only, and this specification is not necessarily limited to the area and thickness of the components shown.

[0025] The features of each of the various embodiments described herein can be combined or combined with one another, either partially or as a whole, enabling a variety of technically diverse interoperability and drive, and each embodiment may be implemented independently of the others or together in relation to one another.

[0026] In the following, this specification will be described with reference to the drawings.

[0027] Figure 1 is an illustrative diagram of a display device according to one embodiment of this specification.

[0028] Referring to Figure 1, the display device 100 may be located on at least part of the vehicle's dashboard. The vehicle's dashboard may include configurations located in front of the front seats of the vehicle (e.g., driver's seat, passenger seat). For example, the vehicle's dashboard may house input configurations for operating various functions inside the vehicle (e.g., air conditioning, audio system, navigation system).

[0029] The display device 100 is positioned on the vehicle's dashboard and can function as an input unit for operating at least some of the vehicle's various functions. The display device 100 can provide various information related to the vehicle, such as vehicle operation information (e.g., current vehicle speed, remaining fuel amount, mileage), information on vehicle components (e.g., degree of damage to the vehicle's tires), etc.

[0030] The display device 100 may be positioned across the driver's seat and the front passenger seat located in the front seats of the vehicle. Users of the display device 100 may include the driver of the vehicle and the passenger in the front passenger seat. Anyone, whether the driver or passenger of the vehicle, can use the display device 100.

[0031] The display device 100 shown in Figure 1 may only be partially shown. The display device 100 shown in Figure 1 may only show the display panel among the various components included in the display device 100. Specifically, the display device 100 shown in Figure 1 may only show at least a portion of the display area and non-display area of ​​the display panel. Components of the display device 100 other than those shown in Figure 1 may be implemented inside (or at least partially inside) the vehicle.

[0032] Figure 2 is an exploded perspective view of a display device according to one embodiment of this specification. Figure 3 is a diagram showing an example of a display panel for a display device according to one embodiment of this specification.

[0033] On the other hand, for the sake of explanation, the horizontal direction on a plane is referred to as the first direction X, and the vertical direction on a plane is referred to as the second direction Y. Furthermore, the normal direction of the surface defined by the first direction X and the second direction Y, for example, the thickness direction of the display device 100, can be defined as the third direction Z.

[0034] Referring to Figure 2, the display device 100 according to one embodiment of this specification may include a first light source unit 110, at least one optical sheet 120, a light control unit 130, a second light source unit 140, a light guide plate 150, and a display panel 160.

[0035] The display panel 160 can generate an image for the user using light provided from a light source located at its bottom. For example, the display panel 160 can display an image by adjusting the transmittance to the light provided from the first light source 110 and / or the second light source 140 located at its bottom.

[0036] A liquid crystal display panel may be used as the display panel 160. For example, the display panel 160 may include a lower substrate, an upper substrate facing the lower substrate, and a liquid crystal layer disposed between the lower substrate and the upper substrate. Here, the liquid crystal layer may be driven by a vertical electric field drive method such as TN (Twisted Nematic) mode and VA (Vertical Alignment) mode, or a horizontal electric field drive method such as IPS (In Plane Switching) mode and FFS (Fringe Field Switching) mode, but is not limited to these.

[0037] The display panel 160 may include a display area on which an image is displayed and a non-display area surrounding the display area.

[0038] The display area of ​​the display panel 160 can be divided into multiple areas. In other words, the display area can contain multiple areas.

[0039] For example, referring further to Figure 3, the display area AA of the display panel 160 may include multiple areas arranged along the first direction X. As an example, the display area AA may include a first area A1 and a second area A2 adjacent to the first area A1 in the first direction X.

[0040] In this embodiment, the first region A1 and the second region A2 of the display panel 160 are arranged to cross the driver's seat and the passenger seat located in the front seats of the vehicle, as described with reference to Figure 1, and can provide a variety of information to the driver and passengers of the vehicle. The first region A1 and the second region A2 of the display panel 160 can each display different informational images to the user. For example, the first region A1 of the display panel 160 includes an area provided on the driver's side of the front seats of the vehicle and / or an area provided between the driver's seat and the passenger seat, such as the CID area, which provides information such as driving speed and RPM, engine temperature, and fuel quantity. The second region A2 of the display panel 160 includes an area provided on the passenger side of the front seats of the vehicle, such as the CDD area, which can provide entertainment functions and seat information for passengers sitting in the passenger seat. However, such region divisions are for the convenience of explanation, and the first region A1 and the second region A2 of the display panel 160 can be defined in various ways depending on the design.

[0041] On the other hand, when the display panel 160 is used in a vehicle as described with reference to Figure 1, the field of view of at least a portion of the display panel 160 may be restricted at the user's request. For example, in the case of images displayed in the second area A2, which provides entertainment functions and seat information for a passenger sitting in the front passenger seat, these images may interfere with the driver's driving of the vehicle, so it may be necessary to restrict the field of view of the images displayed in the second area A2 at the user's request.

[0042] For example, depending on the driving mode of the display device 100, in the first mode, the first area A1 and the second area A2 of the display panel 160 are both controlled to wide-view mode (Share mode) to display an image, and in the second mode, at least a portion of the display panel 160, for example, the second area A2, is controlled to narrow-view mode (Private mode) to display an image. To achieve this, the display device 100 can control the display panel 160 to either the first mode or the second mode by controlling the emission of light from the second light source 140, which is located at the top of a plurality of light sources located at the bottom of the display panel 160.

[0043] Referring to Figure 2, a first light source unit 110, at least one optical sheet 120, a light control unit 130, a second light source unit 140, and a light guide plate 150 may be arranged at the bottom of the display panel 160.

[0044] The first light source unit 110 generates light and can provide the generated light in a third direction Z, for example, towards the optical sheet 120. The first light source unit 110 may be located below the optical sheet 120. For example, the first light source unit 110 may be a direct-type backlight assembly.

[0045] The first light source unit 110 may include a first circuit board 111 and a plurality of first light sources 112 arranged on the first circuit board 111.

[0046] The first circuit board 111 may include a drive circuit for driving multiple first light sources 112. The drive circuit on the first circuit board 111 can generate electrical signals for driving multiple first light sources 112 and supply these signals to the multiple first light sources 112. However, it is not limited to this, and the drive circuit may be located outside the first circuit board 111.

[0047] Multiple first light sources 112 can be mounted on a first circuit board 111. For example, multiple first light sources 112 can be arranged on the first circuit board 111 spaced apart from each other along a first direction X and a second direction Y, and mounted on the upper surface, which is one face of the first circuit board 111. As an example, multiple first light sources 112 can be arranged and mounted on the first circuit board 111 in a matrix configuration, but are not limited to this.

[0048] Each of the multiple first light sources 112 may be configured to emit white light, but is not limited to this; each of the multiple first light sources 112 may be configured to emit light of any one wavelength of red, green, or blue.

[0049] Multiple first light sources 112 may be used, but are not limited to, light-emitting diodes (LEDs), cold cathode fluorescent lamps (CCFLs), or external electrode fluorescent lamps.

[0050] At least one optical sheet 120 may be placed on the first light source unit 110. The first light source unit 110 may include multiple optical sheets for diffusing or focusing light incident from the first light source unit 110.

[0051] For example, the optical sheet 120 may include a first optical sheet 121 and a second optical sheet 122. The first optical sheet 121 can diffuse the light provided from the first light source 110 and allow it to travel upward, for example, in a third direction Z. For example, the first optical sheet 121 may be a diffusion sheet. The second optical sheet 122 can focus the light that has passed through the first optical sheet 121 and allow it to travel upward, for example, in a third direction Z. For example, the second optical sheet 122 may be a prism sheet.

[0052] However, the optical sheet 120 may further include other optical sheets in addition to the first optical sheet 121 and the second optical sheet 122, such as a protective sheet or a brightness-enhancing sheet like a DBEF (dual brightness enhancement film), or it may include a composite optical sheet in which a diffusion sheet and a prism sheet are integrated instead of the first optical sheet 121 and the second optical sheet 122.

[0053] An optical control unit 130 may be placed on the optical sheet 120.

[0054] The optical control unit 130 can control the viewing angle of the light provided from below. For example, the optical control unit 130 can limit the viewing angle or emission angle with respect to the first direction X for light emitted from the first light source unit 110, passing through the optical sheet 120 and traveling in the third direction Z, which is perpendicular to the display area AA. That is, the optical control unit 130 can reduce or narrow the profile of the light emitted from the first light source unit 110 and incident on the optical control unit 130 in the first direction X. In this case, the viewing angle with respect to the first direction X of the image displayed by the light may be reduced.

[0055] For this purpose, the optical control unit 130 may include a first support member 131, a second support member 132 facing the first support member 131, and a plurality of partitions 133 positioned between the first support member 131 and the second support member 132. On the other hand, the term partition used herein is used for convenience of explanation and may be defined by the term louver or by the term viewing angle control pattern instead of partition.

[0056] Each of the multiple partition walls 133 may extend in the second direction Y between the first support member 131 and the second support member 132, and be arranged to be spaced apart from each other along the first direction X.

[0057] Multiple partition walls 133 may be placed in areas that overlap with the entire display area AA, for example, in areas that overlap with the entire first area A1 and the entire second area A2. Furthermore, the heights of the multiple partition walls 133 may differ for each area. For example, the heights of the multiple partition walls 133 may have values ​​between a minimum height (first height) and a maximum height (second height).

[0058] In this case, light incident on the optical control unit 130, for example, in a separated region between multiple partition walls 133, may have its optical profile narrowed in the first direction X by the multiple partition walls 133 which are spaced apart from each other, and the light supplied to the display panel 160 may be almost restricted to the front direction, for example, in the third direction Z.

[0059] As a result, in the region where multiple partition walls 133 of the light control unit 130 are arranged, for example, in the region where multiple partition walls 133 having a second height are arranged, light is provided to a first range, and in the region where multiple partition walls 133 are arranged but designed to be very low in height, for example, in the region where multiple partition walls 133 having a first height are arranged, light can be provided to a second range that is wider than the first range. Therefore, in the case of an image displayed by light emitted from the first light source unit 110, in the region of the display area AA that overlaps with the region where multiple partition walls 133 of the light control unit 130 are arranged, the image is displayed at a second viewing angle overall, and in the region that overlaps with the region where the height of the multiple partition walls 133 is designed to be very low, the image can be displayed at a first viewing angle. The first viewing angle may have a value greater than the second viewing angle. For example, the first viewing angle may be defined as a wide viewing angle, and the second viewing angle may be defined as a narrow viewing angle.

[0060] Furthermore, the optical control unit 130 can control the viewing angle of the image displayed by the light emitted from the first light source unit 110 so that it differs for each region. For example, the optical control unit 130 can control the viewing angle of the light provided from below and traveling in the third direction Z for each region of the display region AA. As an example, the optical control unit 130 can control the viewing angle of the second region A2 of the display region AA for the image displayed by the light emitted from the first light source unit 110.

[0061] In such a case, multiple partition walls 133 having a minimum height (first height) may be arranged in a region overlapping with the first region A1, and multiple partition walls 133 having a maximum height (second height) may be arranged in a region overlapping with the second region A2. As a result, in the case of an image displayed by light emitted from the first light source 110, the image may be displayed with the viewing angle controlled to a second field of view in the second region A2, which overlaps with the region where the multiple partition walls 133 having the maximum height (second height) are arranged, and the image may be displayed with the viewing angle uncontrolled to a first field of view in the first region A1, which overlaps with the region where the multiple partition walls 133 having the minimum height (first height) are arranged.

[0062] However, this is merely illustrative, and the region in which the partition walls 133 are placed is not limited to this. For example, multiple partition walls 133 may be placed only in the region overlapping with the second region A2, and not in the region overlapping with the first region A1.

[0063] The heights of the multiple partitions 133 may decrease as you move from the second region A2 toward the first region A1, for example, as you move in the opposite direction to the first direction X. For example, the heights of the multiple partitions 133 may have a first height, which is the minimum height in the first sub-region, which is most of the area of ​​the first region A1 where the field of view is not substantially controlled regardless of the drive mode, and a second height, which is the maximum height in the second sub-region, which is most of the area of ​​the second region A2 where the field of view is controlled by the drive mode. In addition, the heights of the multiple partitions 133 may gradually decrease as you move from the second region A2 toward the first region A1 in the third sub-region, which is the area between the first and second sub-regions and includes the boundary line between the first region A1 and the second region A2. This can minimize the visibility of the boundary between the first region A1 and the second region A2.

[0064] A detailed explanation of the regional heights of the multiple partition walls 133 will be provided later with reference to Figures 4 to 10.

[0065] A second light source unit 140 and a light guide plate 150 may be arranged on the light control unit 130.

[0066] The second light source unit 140 can generate light and supply the generated light to the light guide plate 150. The second light source unit 140 may be positioned on the side surface of the light guide plate 150. For example, the second light source unit 140 may be an edge-type backlight assembly.

[0067] The second light source unit 140 may include a second circuit board 141 and a plurality of second light sources 142 arranged on the second circuit board 141.

[0068] The second circuit board 141 may include a drive circuit for driving multiple second light sources 142. The drive circuit on the second circuit board 141 can generate electrical signals for driving multiple second light sources 142 and supply these signals to the multiple second light sources 142. However, it is not limited to this, and the drive circuit may be located outside the second circuit board 141.

[0069] The second circuit board 141 may be positioned on one side of the light guide plate 150. That is, the second circuit board 141 may be positioned alongside the light guide plate 150. For example, the second circuit board 141 may have a shape that extends along the longitudinal direction of one of the short sides of the light guide plate 150, for example, along the second direction Y. However, it is not limited to this, and the second circuit board 141 may be positioned corresponding to one of the long sides of the light guide plate 150.

[0070] Furthermore, multiple second light sources 142 can be mounted on the second circuit board 141. For example, multiple second light sources 142 can be arranged on the second circuit board 141 spaced apart from each other along the second direction Y, and mounted on the top surface, which is one side of the second circuit board 141.

[0071] Each of the multiple second light sources 142 may be configured to emit white light, but is not limited to this; each of the multiple second light sources 142 may be configured to emit light of any one wavelength of red, green, or blue.

[0072] Multiple second light sources 142 may be used, but are not limited to, light-emitting diodes (LEDs), cold cathode fluorescent lamps (CCFLs), or external electrode fluorescent lamps.

[0073] The light guide plate 150 may be positioned on the light control unit 130 and on the side of the second light source unit 140. For example, the light guide plate 150 may be located on substantially the same plane as the second light source unit 140.

[0074] The light guide plate 150 may be formed from a translucent material such as glass, quartz, or polymer, so that light can be efficiently guided. The polymer may consist of, for example, an acrylic resin such as polymethyl methacrylate (PMMA) or a material having a predetermined refractive index such as polycarbonate (PC).

[0075] The light guide plate 150 can guide the light provided from the second light source unit 140 and direct it toward the display panel 160, for example, in a third direction Z. For example, light incident from the second light source unit 140 through the side where the second light source unit 140 is located can be converted to a third direction Z, where the direction of travel is toward the display panel 160, as it travels through the light guide plate 150 through total internal reflection. Thus, a uniform surface light source can be provided toward the display panel 160.

[0076] Furthermore, the light provided from the first light source unit 110 through the optical sheet 120 and the light control unit 130 can travel in a third direction Z, which is the direction toward the display panel 160 through the light guide plate 150.

[0077] On the other hand, as mentioned above, the drive mode of the display device 100 can be controlled by the emission of light from the second light source 142 included in the second light source unit 140.

[0078] For example, in the first mode, all of the multiple first light sources 112 of the first light source unit 110 and all of the multiple second light sources 142 of the second light source unit 140 can emit light. In this case, even if the viewing angle of the light emitted from the first light source unit 110 in at least a portion of the display area AA, for example, the area overlapping with the second area A2, is controlled by the light control unit 130, the light emitted from the second light source unit 140 travels in a third direction Z toward the display panel 160 by the light guide plate 150 and is provided to the entire display area AA, so that the image can be displayed in the first viewing angle across the entire area of ​​the display panel 160. As a result, in the first mode, the image can be displayed in wide-view mode (Share mode) across the entire area of ​​the display area AA, for example, across the first area A1 and the second area A2.

[0079] Furthermore, in the second mode, the multiple first light sources 112 of the first light source unit 110 may emit light, while the multiple second light sources 142 of the second light source unit 140 may not emit light. Therefore, the image displayed by the display panel 160 in the second mode can only be realized by the light provided by the first light source unit 110. In this case, the viewing angle of the light emitted from the first light source unit 110 in the area of ​​the display area AA that overlaps with the second area A2 is controlled by the light control unit 130, so that the image can be displayed at the first viewing angle in the first area A1 of the display panel 160, and at the second viewing angle in the second area A2 of the display panel 160. As a result, in the second mode, the image can be displayed in a wide-view mode (Share mode) in the first area A1 of the display area AA, and in a narrow-view mode (Private mode) in the second area A2 of the display area AA.

[0080] Thus, the display device 100 according to one embodiment of this specification can control the display panel 160 to either a first mode or a second mode by controlling the emission of light from a plurality of light sources located at the bottom of the display panel 160, namely the second light source 140 located at the top of the first light source 110 and the second light source 140.

[0081] In the following, the optical control unit 130 of the display device 100 according to one embodiment of this specification will be described in more detail with reference to Figures 4 to 10.

[0082] Figure 4 is a schematic side view showing an example of the light control unit included in the display device of Figure 2. Figure 5a is an enlarged view showing an example of the EA1 portion of Figure 4. Figure 5b is an enlarged view showing an example of the EA2 portion of Figure 4. Figure 5c is an enlarged view showing an example of the EA3 portion of Figure 4.

[0083] On the other hand, the optical control unit 130 shown in Figure 4 represents one embodiment of the optical control unit 130 included in the display device 100 described with reference to Figure 2.

[0084] Referring to Figures 2 and 4, the optical control unit 130 includes a first support member 131, a second support member 132 facing the first support member 131, and a plurality of partition walls 133 arranged between the first support member 131 and the second support member 132, and can control the viewing angle or light emission angle along the first direction X with respect to light traveling in the third direction Z, which is perpendicular to the display area AA.

[0085] The first support member 131 and the second support member 132 may be arranged spaced apart from each other with the partition wall 133 in between. The first support member 131 may be positioned below the multiple partition walls 133 to support them, and the second support member 132 may be positioned above the multiple partition walls 133 to support them. However, it is not limited to this, and the lower surfaces of the multiple partition walls 133 may be in contact with the first support member 131, while the upper surfaces of the multiple partition walls 133 may be separated from the second support member 132.

[0086] The first support member 131 and the second support member 132 may each contain a transparent material that allows light to pass through. For example, the first support member 131 and the second support member 132 may each contain a plastic material. As an example, the first support member 131 and the second support member 132 may each contain polycarbonate. However, the materials of the first support member 131 and the second support member 132 are not limited thereto, and depending on the example, the first support member 131 and the second support member 132 may each contain polymers such as polystyrene, polyvinyl alcohol, polymethyl methacrylate, polyethersulfone, polyacrylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyarylate, or polyimide.

[0087] Multiple partition walls 133 may be arranged between the first support member 131 and the second support member 132. On the other hand, each of the multiple partition walls 133 may be connected to the first support member 131 and the second support member 132 through a transparent adhesive or the like, but is not limited to this.

[0088] Each of the multiple partition walls 133 may extend along the second direction Y and be arranged apart from each other along the first direction X. This may create separation spaces between the multiple partition walls 133. Such separation spaces may, but are not limited to, air or a transparent insulating material.

[0089] On the other hand, the separation distance along the first direction X between two adjacent partition walls 133 among the multiple partition walls 133 can be determined by comprehensively considering factors such as the thickness of the light control unit 130, the emission angle of the light emitted from the light control unit 130, and the distance between the light control unit 130 and the display panel 160, so that the image displayed by the light provided from the first light source unit 110 on the second region A2 is displayed at a second viewing angle.

[0090] Each of the multiple partitions 133 may contain a light-absorbing material or be coated with a light-absorbing agent to absorb light entering from the outside. For example, each of the multiple partitions 133 may contain a carbon-series black pigment. However, the material of the multiple partitions 133 is not limited to this, and each of the multiple partitions 133 may contain at least one of the following materials with high light absorption rates: titanium (Ti), tungsten (W), chromium (Cr), molybdenum (Mo), molybdenum (Mo) and titanium (Ti) alloy (MoTi), vanadium (V), niobium (Nb), silicon nitride (SiN), titanium nitride (TiN), silicon carbide (SiC), tantalum (Ta), manganese (Mn), cobalt (Co), nickel (Ni), copper oxide (CuO), aluminum oxide (Al2O3), iron oxide (Fe3O4), and tantalum oxide (Ta2O5), or an organic material with high light absorption rates.

[0091] Furthermore, each of the multiple partition walls 133 may have the shape of a rectangular prism. For example, each of the multiple partition walls 133 may have the shape of a rectangular prism with two opposing sides along the second direction Y being rectangular. Thus, each of the multiple partition walls 133 may have a rectangular shape when viewed from a plane defined by the first direction X and the third direction Z. As a result, the top and bottom surfaces of each of the multiple partition walls 133 may be parallel to the first support member 131 and the second support member 132, and the two opposing sides of each of the multiple partition walls 133 along the first direction X may be perpendicular to the first support member 131 and the second support member 132. For example, the two opposing sides of each of the multiple partition walls 133 along the first direction X may be parallel to the third direction Z, which is perpendicular to the first support member 131 and the second support member 132, respectively.

[0092] On the other hand, referring to Figure 4, the display area AA can be divided into multiple sub-areas AAa, AAb, and AAc. For example, the display area AA can be divided into a first sub-area AAa, a second sub-area AAb, and a third sub-area AAc. Here, the first sub-area AAa corresponds to a part of the first area A1, the second sub-area AAb corresponds to a part of the second area A2, and the third sub-area AAc is located between the first sub-area AAa and the second sub-area AAb, and includes the boundary line BL between the first area A1 and the second area A2, and can be defined as the area of ​​the first area A1 excluding the first sub-area AAa and the area of ​​the second area A2 excluding the second sub-area AAb.

[0093] Multiple partitions 133 can be arranged on the entire area of ​​the display area AA. For example, the multiple partitions 133 may include multiple first partitions 133a arranged on the first sub-area AAa, multiple second partitions 133b arranged on the second sub-area AAb, and multiple third partitions 133c arranged on the third sub-area AAc.

[0094] Multiple first partition walls 133a may be arranged between the first support member 131 and the second support member 132 on the first sub-region AAa. For example, each of the multiple first partition walls 133a may extend along the second direction Y and be spaced apart from each other along the first direction X. This can create separation spaces between the multiple first partition walls 133a.

[0095] Multiple second partition walls 133b may be arranged between the first support member 131 and the second support member 132 on the second sub-region AAb. For example, each of the multiple second partition walls 133b may extend along the second direction Y and be spaced apart from each other along the first direction X. This can create separation spaces between the multiple second partition walls 133b.

[0096] Multiple third partition walls 133c may be positioned between the first support member 131 and the second support member 132 on the third sub-region AAc. For example, each of the multiple third partition walls 133b may extend along the second direction Y and be positioned apart from each other along the first direction X. This can create separation spaces between the multiple third partition walls 133c.

[0097] The heights of the multiple partition walls 133 may differ depending on the region. By having multiple partition walls 133 with different heights in each region, the emission angle of light with respect to the first direction X emitted from the light control unit 130 can be restricted in each region.

[0098] On the other hand, in this specification, the light emission angle may mean the angle that the direction of propagation of light emitted from the optical control unit 130 makes with the third direction Z on a side plane, for example, a plane defined by a first direction X and a third direction Z.

[0099] Furthermore, in this specification, height may mean length or distance along the third direction Z.

[0100] More specifically, the heights of the first partition wall 133a and the second partition wall 133b may be different. For example, the height of the first partition wall 133a may be less than the height of the second partition wall 133b. As an example, the first partition wall 133a located on the first sub-region AAa may have a first height, and the second partition wall 133b located on the second sub-region AAb may have a second height.

[0101] For example, referring further to Figure 5a, the first partition wall 133a may have a first height h1, where the first height h1 may correspond to the minimum height possible in the process.

[0102] Thus, because the multiple first partitions 133a have very small heights, the emission angle of light incident on most of the first region A1, for example, the first sub-region AAa, does not need to be substantially restricted. For example, as shown in Figure 5a, the first height h1 of the multiple first partitions 133a has a very small value, so that the upper ends of two mutually separated first partitions 133a can be positioned adjacent to the upper surface of the first support member 131. In this case, the propagation path of most of the light provided from the bottom of the light control unit 130 is formed between the light passing through the upper ends of the two mutually separated first partitions 133a, for example, between the first light L1 and the first' light L1', so that most of the light provided from the bottom of the light control unit 130 can be emitted upwards.

[0103] As a result, in the first sub-region AAa where multiple first partitions 133a are arranged, the emission angle is not substantially limited with respect to the light provided from below the light control unit 130, for example, the light provided from the first light source unit 110, so that light can be provided to a second range that is wider than the first range.

[0104] Referring further to Figure 5b, the second partition wall 133b may have a second height h2 greater than the first height h1. Here, the second height h2 may be substantially the same as the length of the separation space between the first support member 131 and the second support member 132 along the third direction Z. However, it is not limited to this, and the second height h2 of each of the multiple second partition walls 133b may be less than the length of the separation space between the first support member 131 and the second support member 132 along the third direction Z.

[0105] Thus, the multiple second partitions 133b having a second height h2 can limit the emission angle of light with respect to the first direction X of the light emitted from the optical control unit 130 in the second sub-region AAb. For example, the light provided from the lower part of the optical control unit 130, such as the light provided from the first light source unit 110, may have its emission angle with respect to the first direction X limited in the second sub-region AAb where the second partitions 133b are located, as the optical profile is reduced or narrowed along the first direction X by the multiple second partitions 133b.

[0106] For example, referring to Figure 5b, of the light provided from the bottom of the optical control unit 130, the second light L2, which has an optical path formed in a third direction Z that is vertical between two mutually separated partition walls 133, is not blocked by the second partition wall 133b and can be emitted to the outside, i.e., towards the top of the optical control unit 130.

[0107] Furthermore, in the case of light provided from the lower part of the optical control unit 130 that passes inside the upper ends of the two mutually separated second partition walls 133b, that is, light between the fifth light L5 and the fifth' light L5', it may be emitted upwards from the optical control unit 130.

[0108] However, if a light path is formed between two mutually separated second partitions 133b at a predetermined angle with respect to the third direction Z along the first direction X, and the second partitions 133b are located on this light path, then at least a portion of the light may be blocked by the second partitions 133b. That is, light provided from the bottom of the light control unit 130 at an angle greater than the incident angle of the fifth light L5 and the fifth' light L5' may be blocked by the multiple second partitions 133b and may not be able to exit towards the top of the light control unit 130. For example, at least a portion of the third light L3 and the fourth light L4 provided from the bottom of the light control unit 130 may be absorbed by the second partitions 133b and not exit to the outside.

[0109] On the other hand, in the case of light where the second partition wall 133b is located on the optical path in this way, each of the multiple second partition walls 133b contains a light-absorbing material or is coated with a light-absorbing agent, so the majority of the light is absorbed by the second partition wall 133b, but the remaining portion that is not absorbed by the second partition wall 133b can be totally reflected from the second partition wall 133b and emitted to the outside. For example, the third light L3a of the third light L3 that is not absorbed by the second partition wall 133b, and the fourth light L4a of the fourth light L4 that is not absorbed by the second partition wall 133b, can be totally reflected from the second partition wall 133b and emitted to the outside.

[0110] As a result, in the second sub-region AAb where multiple second partitions 133b are arranged, the emission angle is restricted with respect to the light provided from the lower part of the light control unit 130, for example, the light provided from the first light source unit 110, so that light can be provided to a first range that is narrower than the second range.

[0111] Thus, in the majority of the area, for example, in the second sub-area AAb where multiple second partitions 133b having a second height h2 are arranged, the emission angle of light with respect to the first direction X of light is restricted and light is provided to a first range, while in the majority of the area, for example, in the first sub-area AAa where multiple first partitions 133b having a first height h1 are arranged, in the first area A1, the emission angle of light is not restricted and light can be provided to a second range that is wider than the first range. As a result, in the case of an image displayed by light emitted from the first light source unit 110 located below the light control unit 130, the image may be displayed with a second viewing angle, for example, a narrow viewing angle, overall in the second area A2 of the display area AA, and with a first viewing angle, for example, a wide viewing angle, overall in the first area A1.

[0112] Referring to Figure 4, the multiple third partitions 133c may have a value between the first height h1 and the second height h2. For example, the height of the multiple third partitions 133c may increase as you move toward the first direction X. For example, the height of the multiple third partitions 133c may increase as you move toward the second region A2 or second sub-region AAb from the first region A1 or first sub-region AAa. As an example, the third partition 133c closest to the first sub-region AAa has the same height as the first partition 533a, the third partition 133c closest to the second sub-region AAb has the same height as the second partition 133b, and the remaining third partitions 133c have a height between the first height h1 and the second height h2, with the height increasing as you move toward the first direction X.

[0113] In other words, the height of the multiple third partitions 133c from near the boundary line BL between the first region A1 and the second region A2 may gradually increase as you move in the first direction X, that is, towards the second sub-region AAb or the second region A2. This allows for minimizing the visibility of the boundary between the first region A1 and the second region A2 due to the difference in viewing angles, at the boundary between the second region A2, where the viewing angle is generally restricted and the image is displayed at a second viewing angle, for example, a narrow viewing angle, and the first region A1, where the viewing angle is not substantially restricted and the image is displayed at a first viewing angle, for example, a wide viewing angle.

[0114] On the other hand, the boundary between the first region A1 and the second region A2 of display region AA may be defined within the third sub-region AAc. To explain this more specifically, referring further to Figure 5c, a straight line parallel to the third direction Z can be defined as the boundary line BL between the first region A1 and the second region A2, based on a point on a virtual line VL connecting the center points of the upper surfaces of each of the multiple third partition walls 133c, where the height from the first support member 131 is half of the second height h2, which is the height of the second partition wall 153b located on the second region A2. However, the division of the first region A1 and the second region A2 of display region AA by such a boundary line BL is merely illustrative, and the first region A1 and the second region A2 in display region AA can be defined in various ways depending on the design. For example, by design, a straight line parallel to the third direction Z may be defined as the boundary line BL between the first region A1 and the second region A2, based on a point on a virtual line VL connecting the center points of the upper surfaces of each of the multiple third bulkheads 133c that has a height of 2 / 3 of the second height h2.

[0115] As a result, in the case of an image displayed by light provided from the lower part of the light control unit 130, for example from the first light source unit 110, a plurality of second partitions 133b having a second height h2 are arranged on the majority of the second region A2, for example, the second sub-region AAb, and the image is displayed in the second region A2 with the field of view controlled to a second viewing angle. In the case of an image displayed by light provided from the lower part of the light control unit 130, for example from the first sub-region AAa, a plurality of first partitions 133a having a first height h1 lower than the second height h2 are arranged on the majority of the first region A1, for example, the first sub-region AAa, and the image can be displayed in the first viewing angle with the field of view not being substantially controlled in the first region A1.

[0116] Furthermore, the heights of the multiple third partitions 133c located in the region near the boundary line BL between the first region A1 and the second region A2, for example, in the third sub-region AAc, which are controlled to have different viewing angles depending on the driving mode, have a value between the first height h1 and the second height h2, and are designed so that the height gradually changes as you move in one direction, thereby minimizing the visibility of the boundary between the first region A1 and the second region A2.

[0117] Furthermore, since the multiple partitions 133 are not formed only in the second region A2 for viewing angle control during the manufacturing process of the optical control unit 130, but are formed over the entire display region AA, the manufacturing process of the optical control unit 130 can be further simplified.

[0118] Figure 6 is a schematic side view showing another example of the optical control unit included in the display device of Figure 2. Figure 7a is an enlarged view showing an example of the EA4 portion of Figure 6. Figure 7b is an enlarged view showing an example of the EA5 portion of Figure 6.

[0119] On the other hand, the optical control unit 230 shown in Figure 6 represents another embodiment of the optical control unit 130 included in the display device 100 described with reference to Figure 2.

[0120] Furthermore, Figures 6 to 7b show modified embodiments of the embodiment in Figures 4 to 5c in relation to the shapes of the multiple partition walls 233 included in the optical control unit 230. Therefore, in order to avoid redundant explanations, the differences from the embodiment described above will be the focus of the explanation for Figures 6 to 7b.

[0121] Referring to Figures 2 and 6, the optical control unit 230 includes a first support member 131, a second support member 132 facing the first support member 131, and a plurality of partition walls 233 arranged between the first support member 131 and the second support member 132, and can control the viewing angle or light emission angle along the first direction X with respect to light traveling in the third direction Z, which is perpendicular to the display area AA.

[0122] Multiple partition walls 233 may be arranged between the first support member 131 and the second support member 132. For example, each of the multiple partition walls 233 may extend along the second direction Y and be spaced apart from each other along the first direction X. This can create separation spaces between the multiple partition walls 233.

[0123] Multiple partitions 233 can be arranged over the entire area of ​​the display area AA. For example, the multiple partitions 233 may include multiple first partitions 233a arranged over the first sub-area AAa, multiple second partitions 233b arranged over the second sub-area AAb, and multiple third partitions 233c arranged over the third sub-area AAc.

[0124] The heights of the multiple partition walls 233 may differ depending on the region. For example, the multiple first partition walls 233a may have a minimum height, a first height h1, and the multiple second partition walls 233b may have a maximum height, a second height h2. By having multiple partition walls 233 with different heights depending on the region, the emission angle of light with respect to the first direction X emitted from the light control unit 230 can be restricted for each region.

[0125] Furthermore, the multiple third partitions 233b may have heights between the first height h1 and the second height h2. For example, the heights of the multiple third partitions 233b may increase as you move in the first direction X, for example, from the first region A1 to the second region A2. This can minimize the visibility of the boundary between the first region A1 and the second region A2 due to the difference in field of view angles.

[0126] Each of the multiple partition walls 233 may have the shape of a rectangular prism. For example, each of the multiple partition walls 233 may have the shape of a rectangular prism with two trapezoidal sides facing each other along the second direction Y. Thus, each of the multiple partition walls 233 may have a trapezoidal shape when viewed from a plane defined by the first direction X and the third direction Z. As a result, the top and bottom surfaces of each of the multiple partition walls 233 are parallel to the first support member 131 and the second support member 132, one of the two sides facing each of the multiple partition walls 233 along the first direction X is perpendicular to the first support member 131 and the second support member 132, and the other of the two sides facing each of the multiple partition walls 233 along the first direction X may have a plane inclined at a predetermined angle with respect to the first support member 131 and the second support member 132. For example, of the two opposing sides of each of the multiple partition walls 233 along the first direction X, one side located on the side facing the first direction X is parallel to the third direction Z which is perpendicular to the first support member 131 and the second support member 132, respectively, and the other side of each of the multiple partition walls 233 along the first direction X, located on the side opposite to the first direction X, may have a plane inclined at a predetermined angle with respect to the third direction Z.

[0127] Thus, the multiple trapezoidal partitions 233 on the side surface can increase the emission angle of light emitted from the optical control unit 230 in the first region A1 where the field of view is not substantially limited, and can more effectively limit the emission angle of light with respect to the first direction X emitted from the optical control unit 230 in the second region A2 where the field of view is controlled by the drive mode.

[0128] To explain in more detail, first, referring further to Figure 7a, the first partition wall 233a may have a first height h1. Here, the first height h1 may correspond to the minimum height possible in the process, substantially the same or similar as described with reference to Figure 5a. In this way, having multiple first partition walls 233a with very small heights means that the emission angle of light incident on most areas of the first region A1, for example, the first sub-region AAa, does not need to be substantially restricted.

[0129] Here, each of the multiple first partitions 233a arranged on the first sub-region AAa has the shape of a rectangular prism with trapezoidal sides facing each other along the second direction Y, which can broaden the range of emission angles over which light supplied from the lower part of the optical control unit 230 can be emitted towards the upper part of the optical control unit 230.

[0130] For example, as shown in Figure 7a, the first' light L1' of the light emitted upward through the separation space between the two first partition walls 233a provided from the bottom of the optical control unit 230 and separated from each other passes through the interior of the end of the side surface that is inclined along the first direction X of the two opposing sides of the first partition wall 233a along the first direction X, so that the emission angle of the first' light L1' can be increased.

[0131] Therefore, the emission angle of light emitted from the optical control unit 230 can be increased in the first region A1, where the field of view is not substantially limited regardless of the driving mode.

[0132] Next, referring further to Figure 5b, the light provided from the lower part of the optical control unit 230, for example, the light provided from the first light source unit 110, may have its emission angle with respect to the first direction X limited by the optical profile being reduced or narrowed along the first direction X by a plurality of second partitions 233b located in the second region A2, for example, the second sub-region AAb.

[0133] In particular, when a light path is formed between two mutually separated second partition walls 233b from the light provided from the lower part of the light control unit 230 in a direction having a predetermined angle along the first direction X with respect to the third direction Z, and the inclined side surface of the second partition wall 233b is located on the light path, when the remaining portion of the light that was not absorbed by the second partition wall 233b undergoes total internal reflection, it can be further guided toward the third direction Z, which is perpendicular, compared to when it undergoes total internal reflection by the vertical side surface of the second partition wall 233b. For example, at least a portion of the third light L3 provided from the bottom of the optical control unit 230 and traveling to the vertical side surface of the second partition wall 233b may be absorbed by the second partition wall 233b, and the third light L3a that is not absorbed by the second partition wall 233b may be totally reflected from the vertical side surface of the second partition wall 233b. At least a portion of the fourth light L4 provided from the bottom of the optical control unit 230 and traveling to the inclined side surface of the second partition wall 233b may be absorbed by the second partition wall 233b, and the fourth light L4a that is not absorbed by the second partition wall 233b may be totally reflected from the inclined side surface of the second partition wall 233b. Here, due to the difference in incidence angle between the vertical and inclined sides of the second partition wall 233b, the fourth light beam L4a, which is totally reflected by the inclined side of the second partition wall 233b, can be further guided toward the third direction Z, which is vertical, compared to the third light beam L3a, which is totally reflected by the vertical side of the second partition wall 233b. As a result, the light directed toward the display panel 160 in the second region A2 can be more focused.

[0134] Furthermore, the fourth light beam L4a, which is totally reflected by the inclined side surface of the second partition wall 233b, travels in the opposite direction to the first direction X where the first region A1 is located. However, because it is guided towards the third direction Z, which is the vertical direction, by the angle of incidence along the inclined side surface at the time of total reflection, the fourth light beam L4a totally reflected by the inclined side surface of the second partition wall 233b, as described with reference to Figure 7b, can be shifted more towards the first direction X compared to the fourth light beam L4a totally reflected by the vertical side surface of the second partition wall 133b, as described with reference to Figure 5b. As a result, in the case of an image displayed on the second region A2 by light provided from the first light source 110, the viewing angle toward the first region A1 can be more effectively limited.

[0135] Figure 8 is a schematic side view showing yet another example of the light control unit included in the display device of Figure 2. Figure 9 is an enlarged view showing an example of the EA6 portion of Figure 8.

[0136] On the other hand, the optical control unit 330 shown in Figure 8 represents yet another embodiment of the optical control unit 130 included in the display device 100 described with reference to Figure 2.

[0137] Furthermore, Figures 8 and 9 show modified embodiments of the embodiments in Figures 6 to 7b in relation to the shapes of the multiple partition walls 333 included in the optical control unit 330. Accordingly, in order to avoid redundant explanations, Figures 8 and 9 will be explained focusing on the differences from the embodiments described above.

[0138] Referring to Figures 2 and 8, the optical control unit 330 includes a first support member 131, a second support member 132 facing the first support member 131, and a plurality of partition walls 333 arranged between the first support member 131 and the second support member 132, and can control the viewing angle or light emission angle along the first direction X with respect to light traveling in the third direction Z, which is perpendicular to the display area AA.

[0139] Multiple partition walls 333 can be arranged between the first support member 131 and the second support member 132. For example, each of the multiple partition walls 333 may extend along the second direction Y and be spaced apart from each other along the first direction X. This can create separation spaces between the multiple partition walls 333.

[0140] Multiple partition walls 333 can be arranged over the entire area of ​​the display area AA. For example, the multiple partition walls 333 may include multiple first partition walls 333a arranged on the first sub-area AAa and having a first height h1, multiple second partition walls 333b arranged on the second sub-area AAb and having a second height h2, and multiple third partition walls 333c arranged on the third sub-area AAc and having a height between the first height h1 and the second height h2.

[0141] Each of the multiple partition walls 333 may have the shape of a rectangular prism.

[0142] For example, the multiple first partitions 333a arranged in the first sub-region AAa and the multiple third partitions 333c arranged in the third sub-region AAc may have the shape of a rectangular prism with trapezoidal sides facing each other along the second direction Y.

[0143] On the other hand, in Figure 8, the first partition wall 333a and the third partition wall 333c are described based on the assumption that they have the shape of a rectangular prism with trapezoidal sides facing each other along the second direction Y, but this is illustrative and not limiting. For example, as described with reference to Figures 4 to 5c, the first partition wall 333a and the third partition wall 333c may have the shape of a rectangular prism with rectangular sides facing each other along the second direction Y.

[0144] Furthermore, the multiple second partition walls 333b located in the second sub-region AAb may have the shape of a rectangular prism, which is a quadrilateral with two opposing sides inclined along the second direction Y.

[0145] More specifically, referring further to Figure 9, the multiple second partitions 333b may have a rectangular shape when viewed from a plane defined by the first direction X and the third direction Z, inclined perpendicular to the display area AA, i.e., by a predetermined angle with respect to the third direction Z. For example, each of the multiple second partitions 333b may have a rectangular shape rotated clockwise by a predetermined angle on a plane defined along the first direction X and the third direction Z with respect to the third direction Z. As a result, the two opposing sides of each of the multiple second partitions 333b along the first direction X may have a plane inclined by a predetermined angle toward the first direction X with respect to the third direction Z.

[0146] As a result, the paths of the fifth light L5 and the fifth' light L5', respectively, that pass through the interior of the upper ends of the two mutually separated second partition walls 333b, which are provided from the lower part of the optical control unit 330, can be formed by the second partition walls 333b having a shape that is inclined by a predetermined angle with respect to the third direction Z, thereby shifting them more toward the first direction X.

[0147] Furthermore, in the case of the third light L3, where the second partition 333b is located on the optical path depending on the angle of incidence, the third light L3a that is not absorbed by the second partition 333b is totally reflected from the second partition 333b and emitted to the outside. However, since the second partition 333b has a plane that is inclined by a predetermined angle toward the first direction X with respect to the third direction Z, the path of the third light L3a that is totally reflected by the second partition 333b can be shifted further toward the first direction X due to the inclination of the plane on which the third light L3 is incident.

[0148] Thus, since the multiple second partitions 333b arranged on the second region A2, for example the second sub-region AAb, have the shape of a rectangular prism with two sides facing each other along the second direction Y being inclined, the light emitted from the optical control unit 330 in the second region A2 can be shifted overall towards the first direction X. As a result, in the case of an image displayed on the second region A2 by the light provided by the first light source unit 110, the viewing angle toward the first region A1 can be more effectively limited.

[0149] Figure 10 is a schematic side view showing yet another example of the optical control unit included in the display device shown in Figure 2.

[0150] On the other hand, the optical control unit 430 shown in Figure 10 represents yet another embodiment of the optical control unit 130 included in the display device 100 described with reference to Figure 2.

[0151] Furthermore, Figure 10 shows a modified embodiment of the embodiment in Figures 8 and 9 in relation to the shapes of the multiple partition walls 433 included in the optical control unit 430. In order to avoid redundant explanations, Figure 10 will be explained focusing on the differences from the embodiment described above.

[0152] Referring to Figures 2 and 10, the optical control unit 430 includes a first support member 131, a second support member 132 facing the first support member 131, and a plurality of partition walls 433 arranged between the first support member 131 and the second support member 132, and can control the viewing angle or light emission angle along the first direction X with respect to light traveling in the third direction Z, which is perpendicular to the display area AA.

[0153] Multiple partition walls 433 may be arranged between the first support member 131 and the second support member 132. For example, each of the multiple partition walls 433 may extend along the second direction Y and be spaced apart from each other along the first direction X. This can create separation spaces between the multiple partition walls 433.

[0154] Multiple partitions 433 can be arranged over the entire area of ​​the display area AA. For example, the multiple partitions 433 may include multiple first partitions 433a arranged on the first sub-area AAa and having a first height h1, multiple second partitions 433b arranged on the second sub-area AAb and having a second height h2, and multiple third partitions 433c arranged on the third sub-area AAc and having a height between the first height h1 and the second height h2.

[0155] Each of the multiple partition walls 433 may have the shape of a rectangular prism.

[0156] For example, the multiple first partitions 433a arranged on the first sub-region AAa, the multiple second partitions 433b arranged on the second sub-region AAb, and the multiple third partitions 433c arranged on the third sub-region AAc may each have the shape of a rectangular prism, where both sides facing each other along the second direction Y are inclined. As a result, the light emitted from the optical control unit 430 is shifted overall towards the first direction X, so that, in the case of an image displayed on the second region A2 by the light provided by the first light source unit 110, the viewing angle toward the first region A1 can be more effectively limited.

[0157] Furthermore, since multiple partition walls 433 having the same shape are formed over the entire area of ​​the optical control unit 430, for example, the first sub-region AAa, the second sub-region AAb, and the third sub-region AAc, during the manufacturing process of the optical control unit 430, the manufacturing process of the optical control unit 430 can be further simplified.

[0158] Figure 11 is a side view of a display device according to another embodiment of this specification. Figure 12 is a side view showing an example of an optical control unit included in the display device of Figure 11.

[0159] On the other hand, the display device 500 in Figure 11 further includes a cover 570, a first fixing member 580 and a second fixing member 590, and in relation to the fact that the light control unit 530 is formed to be inclined, a modified embodiment of the display device 100 described with reference to Figure 2 is shown. Accordingly, in order to avoid redundant explanations, the differences from the above-described embodiment will be explained in detail in Figures 11 and 12.

[0160] On the other hand, while Figures 11 and 12 show that the shapes of the multiple partition walls 533 included in the optical control unit 530 are substantially the same as or similar to the shapes of the partition walls 133 described with reference to Figures 4 to 5c, this is merely illustrative and not limiting. For example, the multiple partition walls 533 included in the optical control unit 530 may have the shapes of partition walls 233, 333, and 433 according to one embodiment of the shapes of partition walls 233, 333, and 433 described with reference to Figures 6 to 7b, 333, and 433 described with reference to Figures 8 and 9, or 433, and 433 described with reference to Figure 10.

[0161] Referring to Figure 11, another embodiment of the display device 500 according to this specification may include a first light source unit 110, at least one optical sheet 120, a light control unit 530, a second light source unit 140, a light guide plate 150, a display panel 160, and a cover 570. The display device 500 may further include a first fixing member 580 and a second fixing member 590. On the other hand, the term "fixing member" as used herein is used for convenience of explanation and may be defined as a "support plate" instead.

[0162] The cover 570 is an outer cover of the display device 500 and can support or house various components of the display device 500, such as the first light source unit 110, at least one optical sheet 120, the light control unit 530, the second light source unit 140, the light guide plate 150, and the display panel 160. For example, the cover 570 may be a housing.

[0163] For this purpose, the cover 570 has an open top and may include a bottom 570a, a first side 570b, a second side 570c, a third side 570d, a fourth side 570e, a fifth side 570f, and a sixth side 570g. On the other hand, the bottom 570a, the first side 570b, the second side 570c, the third side 570d, the fourth side 570e, the fifth side 570f, and the sixth side 570g are integrally formed to constitute the cover 570. Dividing the cover 570 into regions based on a single plane, for example, a plane defined by a first direction X and a third direction Z, is merely illustrative for the sake of explanation, and the division of the cover 570 can be done in various ways.

[0164] The bottom 570a of the cover 570 may be positioned at the very bottom. For example, the bottom 570a of the cover 570 may be positioned at the very bottom of the display device 500 to support the first light source unit 110.

[0165] The first side portion 570b and the second side portion 570c of the cover 570 may be positioned on either side of the bottom portion 570a. For example, the first side portion 570b and the second side portion 570c of the cover 570 may contact both ends of the bottom portion 570a. On the other hand, as mentioned above, the first side portion 570b and the second side portion 570c may be formed integrally with the bottom portion 570a.

[0166] The first side portion 570b and the second side portion 570c of the cover 570 may have the same width. For example, the width of the first side portion 570b along the first direction X and the width of the second side portion 570c along the first direction X may be the same.

[0167] Furthermore, the first side portion 570b and the second side portion 570c of the cover 570 may have the same height. For example, the height of the first side portion 570b along the third direction Z and the height of the second side portion 570c along the third direction Z may be the same.

[0168] Due to the shape of the bottom 570a, first side 570b, and second side 570c of the cover 570, a separation space can be formed between the first side 570b and the second side 570c above the bottom 570a. Therefore, the first light source unit 110 can be positioned in the separation space between the first side 570b and the second side 570c above the bottom 570a.

[0169] Furthermore, the third side portion 570d of the cover 570 may be positioned above the first side portion 570b, and the fourth side portion 570e of the cover 570 may be positioned above the second side portion 570c. For example, the third side portion 570d of the cover 570 may contact the upper surface of the first side portion 570b, and the fourth side portion 570e of the cover 570 may contact the upper surface of the second side portion 570c. On the other hand, as mentioned above, the third side portion 570d and the fourth side portion 570e may be formed integrally with the first side portion 570b and the second side portion 570c.

[0170] The third side portion 570d and the fourth side portion 570e of the cover 570 may have the same width. For example, the width of the third side portion 570d along the first direction X and the width of the fourth side portion 570e along the first direction X may be the same.

[0171] The widths of the third side portion 570d and the fourth side portion 570e of the cover 570 along the first direction X may be smaller than the widths of the first side portion 570b and the second side portion 570c along the first direction X. As a result, as shown in Figure 11, a portion of the upper surface of the first side portion 570b may be covered by the third side portion 570d, and the remaining portion, the first surface S1, may be exposed. Similarly, a portion of the upper surface of the second side portion 570c may be covered by the fourth side portion 570e, and the remaining portion, the second surface S2, may be exposed.

[0172] Therefore, one end of the optical sheet 120, which is placed on the first light source unit 110, can be supported by the first side 570b by contacting the exposed first surface S1 of the upper surface of the first side 570b of the cover 570, and the other end of the optical sheet 120 can be supported by the second side 570c by contacting the exposed second surface S2 of the upper surface of the second side 570c of the cover 570.

[0173] Furthermore, the third side portion 570d and the fourth side portion 570e of the cover 570 may have the same height. For example, the height of the third side portion 570d along the third direction Z and the height of the fourth side portion 570e along the third direction Z may be the same.

[0174] The first fixing member 580 may be positioned on the upper part of one end of the optical sheet 120, and the second fixing member 590 may be positioned on the upper part of the other end of the optical sheet 120.

[0175] The heights of the first fixing member 580 and the second fixing member 590 may be different. For example, the height of the first fixing member 580 along the third direction Z may be greater than the height of the second fixing member 590 along the third direction Z.

[0176] The optical control unit 530 is positioned on the optical sheet 120 and can be supported by the first fixing member 580 and the second fixing member 590, with both ends in contact with the first fixing member 580 and the second fixing member 590. For example, one end of the optical control unit 530 may be in contact with the first fixing member 580 and supported by the first fixing member 580, and the other end of the optical control unit 530 may be in contact with the second fixing member 590 and supported by the second fixing member 590.

[0177] Here, the difference in height between the first fixing member 580 and the second fixing member 590 allows the optical control unit 530 to be formed to tilt by a predetermined tilt angle.

[0178] More specifically, referring further to Figure 12, the difference in height between the first fixing member 580 and the second fixing member 590 may cause the optical control unit 530 to be tilted by a predetermined tilt angle TAG toward the first direction X. For example, the optical control unit 530 may be formed to rotate clockwise by a tilt angle TAG on a plane defined by the first direction X and the third direction Z.

[0179] Therefore, the first support member 531, the second support member 532 included in the optical control unit 530, and the plurality of partition walls 533 arranged between the first support member 531 and the second support member 532 can all be formed to tilt toward the first direction X by a predetermined tilt angle TAG, for example, by rotating clockwise by a tilt angle TAG on a plane defined by the first direction X and the third direction Z. For example, since the optical control unit 530, for example, the first support member 531 and / or the second support member 532 are formed by rotating clockwise by a tilt angle TAG on a plane defined by the first direction X and the third direction Z with respect to a first reference line RL1 parallel to the first direction X, the central axis CX of the plurality of partition walls 533 formed between the first support member 531 and the second support member 532 can be formed by rotating clockwise by a tilt angle TAG on a plane defined by the first direction X and the third direction Z with respect to a second reference line RL2 parallel to the third direction Z.

[0180] In such a case, when light provided from the lower part of the optical control unit 530, for example, light provided from the first light source unit 110, is emitted from the optical control unit 530 via the optical control unit 530, it can be shifted to the first direction X by a plurality of partition walls 533 formed to be tilted by a predetermined tilt angle TAG. For example, since the plurality of partition walls 533 arranged on the second region A2 have a shape tilted to the first direction X, the sixth light L6 emitted from the optical control unit 530 in the second region A2 can be shifted to the first direction X overall. As a result, in the case of an image displayed on the second region A2 by light provided from the first light source unit 110, the viewing angle toward the first region A1 can be more effectively limited.

[0181] On the other hand, as mentioned above, since the multiple partition walls 533 arranged on the first region A1 have a very low height, the seventh light L7 emitted from the optical control unit 530 in the first region A1 can be emitted without substantially limiting the emission angle.

[0182] On the other hand, the tilt angle TAG can be determined by the degree to which the multiple partition walls 533 arranged on the second region A2 shift the light emitted from the optical control unit 530 in the second region A2 toward the first direction X.

[0183] On the other hand, while Figures 11 and 12 describe the optical control unit 530 as being formed so that the entire unit is tilted by a predetermined tilt angle TAG toward the first direction X, the optical control unit 530 may be formed so that only a part of it is tilted by a predetermined tilt angle TAG toward the first direction X. More specifically, it may be formed so that the boundary line BL between the first region A1 and the second region A2 is tilted by a tilt angle TAG toward the first direction X. For example, the optical control unit 530 may be formed so that the region corresponding to the first region A1 is horizontal, and the region corresponding to the second region A2 is tilted toward the first direction X by a tilt angle TAG from the boundary line BL. Also, referring to Figure 11, the fifth side portion 570f of the cover 570 may be located above the third side portion 570d, and the sixth side portion 570g of the cover 570 may be located above the fourth side portion 570e. For example, the fifth side portion 570f of the cover 570 may contact the upper surface of the third side portion 570d, and the sixth side portion 570g of the cover 570 may contact the upper surface of the fourth side portion 570e. On the other hand, as described above, the fifth side portion 570f and the sixth side portion 570g may be formed integrally with the third side portion 570d and the fourth side portion 570e.

[0184] The fifth side portion 570f and the sixth side portion 570g of the cover 570 may have the same width. For example, the width of the fifth side portion 570f along the first direction X and the width of the sixth side portion 570g along the first direction X may be the same.

[0185] The widths of the fifth side portion 570f and the sixth side portion 570g of the cover 570 along the first direction X may be smaller than the widths of the third side portion 570d and the fourth side portion 570e along the first direction X. As a result, as shown in Figure 11, a portion of the upper surface of the third side portion 570d may be covered by the fifth side portion 570f, while the remaining portion, the third surface S3, may be exposed. Similarly, a portion of the upper surface of the fourth side portion 570e may be covered by the sixth side portion 570g, while the remaining portion, the fourth surface S4, may be exposed.

[0186] Therefore, one end of the light guide plate 150, which is placed on the light control unit 530, can be supported by the third side portion 570d by contacting the exposed third surface S3 of the upper surface of the third side portion 570d of the cover 570, and the other end of the light guide plate 150 can be supported by the fourth side portion 570e by contacting the exposed fourth surface S4 of the upper surface of the fourth side portion 570e of the cover 570.

[0187] Furthermore, the fifth side portion 570f and the sixth side portion 570g of the cover 570 may have the same height. For example, the height of the fifth side portion 570f along the third direction Z and the height of the sixth side portion 570g along the third direction Z may be the same.

[0188] Figure 13 is a side view of a display device according to yet another embodiment of this specification.

[0189] On the other hand, the display device 600 in Figure 13 shows a modified embodiment of the display device 500 described with reference to Figures 11 and 12, in relation to the shape of the cover 670. Therefore, in order to avoid redundant explanations, Figure 13 will be explained focusing on the differences from the embodiments described above.

[0190] On the other hand, while Figure 13 shows that the shapes of the multiple partition walls 633 included in the optical control unit 630 are substantially the same as or similar to the shapes of the partition walls 133 described with reference to Figures 4 to 5c, this is merely illustrative and not limiting. For example, the multiple partition walls 633 included in the optical control unit 630 may have the shapes of partition walls 233, 333, and 433 according to one embodiment of the shapes of partition walls 233, 333, and 433 described with reference to Figures 6 to 7b, 333, and 433 described with reference to Figures 8 and 9, or 433, and 333, and 433 described with reference to Figure 10.

[0191] Referring to Figure 13, another embodiment of the display device 600 according to this specification may include a first light source unit 110, at least one optical sheet 620, a light control unit 630, a second light source unit 140, a light guide plate 150, a display panel 160, and a cover 670.

[0192] The cover 670 is an outer cover of the display device 600 and can support or house various components of the display device 600, such as the first light source unit 110, at least one optical sheet 620, the light control unit 630, the second light source unit 140, the light guide plate 150, and the display panel 160. For example, the cover 670 may be a housing.

[0193] For this reason, the cover 670 has an open top and may include a bottom 670a, a first side 670b, a second side 670c, a third side 670d, a fourth side 670e, a fifth side 670f, and a sixth side 670g. On the other hand, the bottom 670a, the first side 670b, the second side 670c, the third side 670d, the fourth side 670e, the fifth side 670f, and the sixth side 670g are integrally formed to constitute the cover 670. Dividing the cover 670 into regions based on a single plane, for example, a plane defined by a first direction X and a third direction Z, is merely an example for the sake of explanation, and the division of the cover 670 can be done in various ways.

[0194] The bottom portion 670a of the cover 670 is positioned at the very bottom of the display device 600 and can support the first light source unit 110.

[0195] The first side portion 670b and the second side portion 670c of the cover 670 are positioned on either side of the bottom portion 670a and may contact both ends of the bottom portion 670a. Also, as described with reference to Figure 11, the first side portion 670b and the second side portion 670c of the cover 670 may have the same width.

[0196] The first side portion 670b and the second side portion 670c of the cover 670 may have different heights. For example, the height of the first side portion 670b along the third direction Z may be greater than the height of the second side portion 670c along the third direction Z.

[0197] The third side portion 670d of the cover 670 may be positioned above the first side portion 670b, and the fourth side portion 670e of the cover 670 may be positioned above the second side portion 670c. Also, as described with reference to Figure 11, the third side portion 670d and the fourth side portion 670e of the cover 670 may have the same width.

[0198] The widths of the third side portion 670d and the fourth side portion 670e of the cover 670 along the first direction X may be smaller than the widths of the first side portion 670b and the second side portion 670c along the first direction X. As a result, as shown in Figure 13, a portion of the upper surface of the first side portion 670b may be covered by the third side portion 670d, while the remaining portion, the first surface S1, may be exposed. Similarly, a portion of the upper surface of the second side portion 670c may be covered by the fourth side portion 670e, while the remaining portion, the second surface S2, may be exposed.

[0199] Therefore, one end of the optical sheet 620 placed on the first light source unit 110 can be supported by contacting the exposed first surface S1 of the upper surface of the first side portion 670b of the cover 670, and the other end of the optical sheet 620 can be supported by contacting the exposed second surface S2 of the upper surface of the second side portion 670c of the cover 670.

[0200] Here, the difference in height between the first side portion 670b and the second side portion 670c of the cover 670 allows the optical sheet 620 to be formed to tilt by a predetermined tilt angle TAG.

[0201] Furthermore, the optical control unit 630 may be positioned on the optical sheet 620. In this case, since the optical sheet 620 positioned below is formed to tilt by a predetermined tilt angle TAG, the optical control unit 630 may also be formed to tilt by a predetermined tilt angle TAG. As a result, when light provided from below the optical control unit 630, for example, light provided from the first light source unit 110, passes through the optical control unit 630 and is emitted from the optical control unit 630, it can be shifted to the first direction X by the multiple partition walls 633 formed to tilt by a predetermined tilt angle TAG. For example, since the multiple partition walls 633 positioned on the second region A2 have a shape tilted to the first direction X, the light emitted from the optical control unit 630 in the second region A2 can be shifted to the first direction X overall. As a result, in the case of an image displayed on the second region A2 by light provided from the first light source unit 110, the viewing angle toward the first region A1 can be more effectively limited.

[0202] On the other hand, although Figure 13 describes the optical sheet 620 and the optical control unit 630 as being formed so that the entire unit is tilted by a predetermined tilt angle TAG toward the first direction X, the optical sheet 620 and the optical control unit 630 may be formed so that only a portion of them is tilted by a predetermined tilt angle TAG toward the first direction X. More specifically, they may be formed so that they are tilted by a tilt angle TAG toward the first direction X at the boundary line BL between the first region A1 and the second region A2. For example, the optical sheet 620 and the optical control unit 630 may be formed so that the region corresponding to the first region A1 is horizontal, and the region corresponding to the second region A2 is tilted toward the first direction X by a tilt angle TAG from the boundary line BL. Also, the third side portion 670d and the fourth side portion 670e of the cover 570 may have the same height. For example, the height of the third side portion 670d along the third direction Z and the height of the fourth side portion 670e along the third direction Z may be the same.

[0203] Furthermore, the fifth side portion 670f of the cover 670 may be positioned above the third side portion 670d, and the sixth side portion 670g of the cover 670 may be positioned above the fourth side portion 670e. Also, as described with reference to Figure 11, the fifth side portion 670f and the sixth side portion 670g of the cover 670 may have the same width and height.

[0204] The widths of the fifth side portion 670f and the sixth side portion 670g of the cover 670 along the first direction X may be smaller than the widths of the third side portion 670d and the fourth side portion 670e along the first direction X. As a result, as shown in Figure 13, a portion of the upper surface of the third side portion 670d may be covered by the fifth side portion 670f, while the remaining portion, the third surface S3, may be exposed. Similarly, a portion of the upper surface of the fourth side portion 670e may be covered by the sixth side portion 670g, while the remaining portion, the fourth surface S4, may be exposed.

[0205] Therefore, one end of the light guide plate 150, which is placed on the light control unit 630, can be supported by the third side portion 670d by contacting the exposed third surface S3 of the upper surface of the third side portion 670d of the cover 670, and the other end of the light guide plate 150 can be supported by the fourth side portion 670e by contacting the exposed fourth surface S4 of the upper surface of the fourth side portion 670e of the cover 670.

[0206] The display device according to the embodiments of this specification can be described as follows.

[0207] An embodiment of the Specified Display Device includes a first light source unit including a plurality of first light sources, a light control unit including a plurality of partitions arranged on the first light source unit and overlapping with at least a portion of the display area, a second light source unit including a plurality of second light sources arranged on the light control unit, a light guide plate arranged alongside the second light source unit and guiding the light provided from the second light source unit, and a display panel arranged on the light guide plate and displaying an image using the light provided from the first light source unit or the second light source unit, wherein the heights of the plurality of partitions may differ for each area.

[0208] According to other features of this specification, the display area may include a first area where the image is displayed at a first viewing angle in the first mode and a second mode, respectively, and a second area where the image is displayed at a first viewing angle in the first mode and at a second viewing angle smaller than the first viewing angle in the second mode.

[0209] According to other features of this specification, the height of multiple partitions may decrease from the second region to the first region.

[0210] According to other features of this specification, the partitions may include a plurality of first partitions having a first height, which are located on a first sub-region that is a portion of the first region; a plurality of second partitions having a second height greater than the first height, which are located on a second sub-region that is a portion of the second region; and a plurality of third partitions having a height between the first and second heights, which are located on a third sub-region between the first and second sub-regions.

[0211] According to other features of this specification, the height of multiple third partitions may decrease from the second sub-region to the first sub-region.

[0212] According to other features of this specification, the third sub-region may include a boundary line between the first and second regions.

[0213] According to other features of this specification, each of the partitions may have the shape of a rectangular prism.

[0214] According to other features of this specification, each of the partition walls may include a rectangular or trapezoidal side shape.

[0215] According to other features of this specification, the central axis of each of the partitions may be inclined from a direction perpendicular to the display area.

[0216] Another embodiment of the Specified Information includes a cover, a first light source unit disposed on the bottom of the cover and including a plurality of first light sources, an optical sheet disposed on the first light source unit, one end of which is supported by a first side of the cover and the other end of which is supported by a second side of the cover, a first fixing member disposed on the upper part of one end of the optical sheet, a second fixing member disposed on the upper part of the other end of the optical sheet, an optical control unit disposed on the optical sheet, one end of which is supported by the first fixing member and the other end of which is supported by the second fixing member, and including a plurality of partitions disposed in overlap with at least a portion of the display area, a light guide plate disposed on the optical control unit, one end of which is supported by a third side of the cover and the other end of which is supported by a fourth side of the cover, a second light source unit disposed alongside the light guide plate and including a plurality of second light sources, and a display panel disposed on the light guide plate that displays an image using light provided from the first light source unit or the second light source unit.

[0217] According to other features of this specification, the height of the first fixing member and the height of the second fixing member may be different.

[0218] According to other features of this specification, the first and second sides may be arranged on the same plane, the third side may be arranged on the first side, and the fourth side may be arranged on the second side and on the same plane as the third side.

[0219] According to other features of this specification, the light control unit may be tilted from a direction parallel to the display area.

[0220] A display device according to yet another embodiment of this specification includes a cover, a first light source unit disposed on the bottom of the cover and including a plurality of first light sources, an optical sheet disposed on the first light source unit and supported at one end by a first side of the cover and the other end by a second side of the cover, a light control unit disposed on the optical sheet and including a plurality of partitions arranged to overlap with at least a portion of the display area, a light guide plate disposed on the light control unit and supported at one end by a third side of the cover and the other end by a fourth side of the cover, a second light source unit disposed alongside the light guide plate and including a plurality of second light sources, and a display panel disposed on the light guide plate and displaying an image using light provided from the first light source unit or the second light source unit, wherein the height from the bottom to the top surface of the first side may differ from the height from the bottom to the second side.

[0221] According to other features of this specification, the optical sheet and the optical control unit may be tilted from a direction parallel to the display area.

[0222] Although embodiments of this specification have been described in more detail above with reference to the attached drawings, this specification is not necessarily limited to these embodiments and can be modified and implemented in various ways within the scope of the technical concept of this specification. Accordingly, the embodiments disclosed herein are for illustrative purposes only, not to limit the technical concept of this specification, and the scope of the technical concept of this specification is not limited by such embodiments. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive.

Claims

1. A first light source unit including multiple first light sources; A light control unit including a plurality of partitions arranged on the first light source unit and overlapping with at least a portion of the display area; A second light source unit, disposed on the optical control unit, including a plurality of second light sources; A light guide plate arranged alongside the second light source unit and guiding the light provided from the second light source unit; and Includes a display panel that is placed on the light guide plate and displays an image using light provided from the first light source or the second light source, The height of the multiple partitions differs for each region in the display device.

2. The aforementioned display area is A first region in which the image is displayed at the first viewing angle in the first mode and the second mode, respectively; and The display device according to claim 1, further comprising a second region in which an image is displayed at a first viewing angle in the first mode, and an image is displayed at a second viewing angle smaller than the first viewing angle in the second mode.

3. The display device according to claim 2, wherein the height of the plurality of partitions decreases as you move from the second region to the first region.

4. The aforementioned multiple partitions are, A plurality of first partitions having a first height, arranged on a first sub-region which is a part of the first region; A plurality of second partitions having a second height greater than the first height, which are arranged on a second sub-region that is a part of the second region; and The display device according to claim 2, comprising a plurality of third partitions arranged on a third sub-region between the first sub-region and the second sub-region, and having a height between the first height and the second height.

5. The display device according to claim 4, wherein the height of the plurality of third partitions decreases as you move from the second sub-region to the first sub-region.

6. The display device according to claim 4, wherein the third sub-region includes a boundary line between the first region and the second region.

7. The display device according to claim 1, wherein each of the plurality of partition walls has the shape of a rectangular prism.

8. The display device according to claim 7, wherein each of the plurality of partitions includes a rectangular or trapezoidal side shape.

9. The display device according to claim 1, wherein the central axis of each of the plurality of partitions is inclined from a direction perpendicular to the display area.

10. cover; A first light source unit, which includes a plurality of first light sources, is positioned on the bottom of the cover; An optical sheet disposed on the first light source, with one end supported by the first side of the cover and the other end supported by the second side of the cover; A first fixing member positioned on the upper part of one end of the optical sheet; A second fixing member positioned on the upper part of the other end of the optical sheet; An optical control unit comprising a plurality of partitions, which are arranged on the optical sheet, one end of which is supported by the first fixing member and the other end of which is supported by the second fixing member, and which are arranged to overlap with at least a portion of the display area; A light guide plate disposed on the light control unit, with one end supported by the third side of the cover and the other end supported by the fourth side of the cover; A second light source unit arranged alongside the light guide plate and including a plurality of second light sources; and A display device including a display panel disposed on the light guide plate and displaying an image using light provided from the first light source or the second light source.

11. The display device according to claim 10, wherein the height of the first fixing member and the height of the second fixing member are different.

12. The first side and the second side are arranged on the same plane. The third side portion is positioned on the first side portion, The display device according to claim 10, wherein the fourth side portion is arranged on the second side portion and is in the same plane as the third side portion.

13. The display device according to claim 10, wherein the optical control unit is inclined from a direction parallel to the display area.

14. cover; A first light source unit, which includes a plurality of first light sources, is positioned on the bottom of the cover; An optical sheet disposed on the first light source, with one end supported by the first side of the cover and the other end supported by the second side of the cover; An optical control unit including a plurality of partitions arranged on the optical sheet and overlapping with at least a portion of the display area; A light guide plate disposed on the light control unit, with one end supported by the third side of the cover and the other end supported by the fourth side of the cover; A second light source unit arranged alongside the light guide plate and including a plurality of second light sources; and Includes a display panel that is placed on the light guide plate and displays an image using light provided from the first light source or the second light source, A display device wherein the height from the bottom to the top surface of the first side is different from the height from the bottom to the second side.

15. The display device according to claim 14, wherein the optical sheet and the light control unit are inclined from a direction parallel to the display area.

Images