Display device for controlling viewing angle

Abstract

A display device is provided that includes a substrate; a light emitting package disposed in a first area on the substrate, the light emitting package including at least one first light emitting unit and a plurality of second light emitting units; at least one third light emitting unit disposed in a second area on the substrate; and a display panel disposed on the light emitting package and the at least one third light emitting unit, wherein the plurality of second light emitting units includes a light emitting chip and a light control unit disposed on the light emitting chip.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of Korean Patent Application No. 10-2023-0099501, filed on Jul. 31, 2023, which is hereby incorporated by reference as if fully set forth herein. Technical Field

[0003] The present disclosure relates to a display device for controlling viewing angle. Background Art

[0004] As the information society develops, various types of display devices have been developed. Recently, various display devices such as a liquid crystal display (LCD), a plasma display panel (PDP), and an organic light emitting display (OLED) have been used.

[0005] A general display device does not limit the viewing angle. However, for reasons such as privacy and information protection, it is recently necessary to limit the viewing angle of the display device. For example, in the case where the display device is used as an information medium inside a vehicle, a high-definition image is provided to a passenger in a passenger seat, but for safe driving, it is necessary to limit the viewing angle for the driver. Summary of the invention

[0006] The present disclosure has been made in view of the above-mentioned problems, and an object of the present disclosure is to provide a display device that can effectively limit a viewing angle.

[0007] However, the problems of the present specification are not limited to the above problems, and other technical problems can be inferred from the following embodiments.

[0008] According to one aspect of the present disclosure, the above and other objects can be achieved by providing a display device, the display device comprising a substrate; a light-emitting package disposed in a first area on the substrate, the light-emitting package comprising at least one first light-emitting unit and a plurality of second light-emitting units; at least one third light-emitting unit disposed in a second area on the substrate; and a display panel disposed on the light-emitting package and the at least one third light-emitting unit. The plurality of second light-emitting units comprise a light-emitting chip and a light control unit disposed on the light-emitting chip.

[0009] Details of other implementations are included in the detailed description and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] FIG. 1 illustrates an example of a display device according to an embodiment of the present specification.

[0011] Figure 2A and Figure 2BAn example of implementation of a display device according to an embodiment of the present specification is shown.

[0012] Figure 3 An exploded perspective view of a display device according to an embodiment of the present specification is shown.

[0013] Figure 4 An arrangement of a light emitting unit included in a display device according to an embodiment of the present specification is shown.

[0014] Figure 5 Shows Figure 4 Example of section AA'.

[0015] Figure 6 Shows Figure 4 Example of section BB'.

[0016] Figure 7 is a diagram illustrating a first light emitting unit or a third light emitting unit of a display device according to an embodiment of the present specification.

[0017] Figure 8 Shows Figure 7 Example of a cross section of C-C'.

[0018] Figures 9 to 13 An example of a second light emitting unit of a display device according to an embodiment of this specification is shown.

[0019] Fig.14A , Fig. 14B and Fig. 14C An example of a blind of a display device according to an embodiment of the present specification is shown.

[0020] Fig.15 An arrangement of a light emitting unit included in a display device according to another embodiment of the present specification is shown. DETAILED DESCRIPTION

[0021] Considering the functions of the present disclosure, the terms used in the embodiments of the present specification have been selected as general terms that are currently used as widely as possible, but this may change according to the intentions of technicians involved in the field or precedents, the emergence of new technologies, etc. In some cases, there are terms arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the applicable description. Therefore, the terms used in this specification should be defined based on the meaning of the terms and the overall content of the present disclosure, rather than just the names of the terms.

[0022] When a part in the specification "includes" components, unless otherwise specified, it means that it can also include other components rather than excluding them.

[0023] The expression "at least one of a, b, and c" described throughout the specification may include "a alone," "b alone," "c alone," "a and b," "a and c," "b and c," or "a, b, and c," or "all of a, b, and c." Advantages and features of the present invention and methods of achieving the same will become apparent with reference to the embodiments described in detail in conjunction with the accompanying drawings.

[0024] Since the shapes, areas, ratios, angles, quantities, etc. disclosed in the drawings used to describe the embodiments in this specification are illustrative, the embodiments of this specification are not limited to the illustrative contents. When describing the embodiments, if it is determined that the detailed description of the related known technology may unnecessarily make the subject of the embodiments difficult to understand, its detailed description will be omitted.

[0025] If "including", "having", "implementing", etc. mentioned in this specification are used, other parts may be added. In the case of expressing a component in the singular, it includes the case of including the plural unless otherwise explicitly stated. In addition, when interpreting a component, it is interpreted as including a range of error even if there is no separate explicit description.

[0026] In the case of describing a positional relationship, for example, if the positional relationship of two parts is described as "on," "above," "below," "to the side of," etc., one or more other parts may be located between the two parts. When an element or a layer is referred to as being "on another element" or "on a layer," all cases in which another layer or another element is inserted directly above or between another element are included.

[0027] When an element or layer is provided on another element or another layer, the element or layer is provided directly on another element. Alternatively, the above-mentioned cases include all cases in which another layer or another device is provided between the element or layer and another element.

[0028] In addition, various components are described using terms such as first, second, etc., but these components are not limited by these terms. These terms are only used to distinguish one component from another component. Therefore, the first component mentioned below can be the second component within the technical concept of the present disclosure.

[0029] The features of each of the various embodiments of this specification may be partially or completely combined or combined with each other, may be technically interlocked and driven in various ways, and each embodiment may be performed independently of each other or may be performed together in a related relationship.

[0030] In addition, the terms described later are defined in consideration of the functions in the embodiments of the present specification and may vary according to the intention or habit of the user or operator. Therefore, they should be defined based on the contents of the entire specification.

[0031] Hereinafter, the embodiments will be described with an organic light-emitting display device as the center. However, the embodiments of the present specification are not limited to organic light-emitting display devices, and can be applied to various electroluminescent displays. For example, the electroluminescent display device can be an organic light-emitting diode display device, a quantum dot light-emitting diode display device, or an inorganic light-emitting diode display device.

[0032] Hereinafter, embodiments of the present specification will be described with reference to the accompanying drawings.

[0033] FIG. 1 illustrates an example of a display device according to an embodiment of the present specification.

[0034] In one embodiment, the display device 100 may be disposed on at least a portion of a dashboard of a vehicle. The display device 100 may be disposed to intersect a driver seat and a passenger seat disposed in front of the vehicle's front seats, and may be disposed in front of the front seats. In this case, users of the display device 100 may include a driver in the driver seat and a passenger in the passenger seat. That is, both the driver and the passenger of the vehicle may use the display device 100.

[0035] In addition, the dashboard or display device 100 may also include input configurations for manipulating various functions related to the interior of the vehicle. For example, the dashboard or display device 100 may manipulate air conditioning, an audio system, a navigation system, and the like.

[0036] The display device 100 can provide various information related to the vehicle. For example, the display device 100 can provide vehicle driving information, such as the current speed of the vehicle, the remaining fuel amount, and the driving distance. In addition, the display device 100 can provide information about vehicle components, such as the degree of damage to the vehicle tires.

[0037] In an embodiment, FIG. 1 may only show a portion of the display device 100. That is, the display device 100 shown in FIG. 1 may indicate a portion corresponding to the display panel among various components included in the display device 100. For example, the display device 100 shown in FIG. 1 may indicate at least a portion of the display area and the non-display area of ​​the display panel. In addition, among the components of the display device 100, components other than those shown in FIG. 1 may be installed inside the vehicle.

[0038] Figure 2A and Figure 2B An example of implementation of a display device according to an embodiment of the present specification is shown.

[0039] Figure 2AA case where the first area 111 operates in a viewing angle restriction mode is shown. The viewing angle restriction mode may refer to a mode in which a viewing angle is restricted to provide light in a specific direction. However, the present invention is not limited thereto and may be referred to in various terms according to the embodiment.

[0040] refer to Figure 2A , Figure 2A An example of a screen that can be visually recognized by a driver 101 in a driver's seat and a passenger 102 in a passenger seat when the viewing angle is limited in a first area 111 of the display device 100 is shown. The passenger 102 can see the content displayed in the first area 111. However, since the viewing angle of the first area 111 is limited, the driver 101 cannot see the content displayed in the first area 111. In this case, as shown in the figure, the driver 101 can see a black screen that blocks the display screen.

[0041] Figure 2B The case where the second area 112 operates in a normal mode is shown. The normal mode may refer to a mode in which all users around the display device can see the screen displayed on the display device and the viewing angle is not limited. However, the present disclosure is not limited thereto and may be referred to in various terms according to the embodiment.

[0042] refer to Figure 2B , when the second area 112 of the display device operates in a general mode where the viewing angle is not restricted, both the driver 101 and the passenger 102 can see the same content.

[0043] Figure 3 An exploded perspective view of a display device according to an embodiment of the present specification is shown.

[0044] refer to Figure 3 The display device 100 may include a display panel 110 for displaying an image and a backlight unit 120 disposed on a rear surface of the display panel 110 to emit light to a front surface of the display panel 110 .

[0045] The display panel 110 may be disposed on the backlight unit 120. The display panel 110 may include a color filter and at least one thin film transistor (TFT). The display panel 110 may include a liquid crystal panel. The display panel 110 may include a lower substrate and an upper substrate bonded to face each other, and a liquid crystal layer disposed between the lower substrate and the upper substrate.

[0046] In an embodiment, the lower substrate may include gate lines and data lines arranged to cross each other, and liquid crystal cells formed in the intersection region of the gate lines and the data lines. In an embodiment, the liquid crystal cells may be arranged on the lower substrate in a matrix form. The liquid crystal cells may include thin film transistors arranged in the intersection region of the gate lines and the data lines, and pixel electrodes receiving a data voltage applied to the data lines through the thin film transistors when the thin film transistors are turned on.

[0047] In an embodiment, color filters for realizing multiple colors including red, green, and blue, a black matrix for partitioning between the color filters and blocking light passing through the liquid crystal layer, and a common electrode for applying a voltage to the liquid crystal layer may be formed on the upper substrate.

[0048] In an embodiment, the common electrode is formed on the upper substrate in a vertical electric field driving method such as a twisted nematic (TN) mode and a vertical alignment (VA) mode, and may be formed on the lower substrate together with the pixel electrode in a horizontal electric field driving method such as an IPS (in-plane switching) mode and an FFS (fringe field switching) mode.

[0049] In an embodiment, the liquid crystal cells are driven according to an electric field generated by a potential difference between a data voltage supplied to the pixel electrode through the data line and a common voltage supplied to the common electrode to adjust the amount of light transmitted from the display panel 110 .

[0050] The backlight unit 120 may be disposed under the display panel 110. The backlight unit 120 may provide light to the display panel 110. The backlight unit 120 may include a cover bottom 121, a substrate 122, a light emitting encapsulation layer 123, a diffuser layer (or a diffusion layer or a diffusion plate) 125, a prism layer (or a prism sheet) 127, and a light emitting control film 129.

[0051] The cover bottom 121 may accommodate and fix at least some components of the display panel 110 and the backlight unit 120. According to an embodiment, the display device 100 or the backlight unit 120 may further include mechanical components such as a panel guide and / or a top case to accommodate and fix components of the backlight unit 120.

[0052] The substrate 122 may include a plurality of circuits and a printed circuit board (PCB).

[0053] The light emitting encapsulation layer 123 may be driven by receiving power from the outside and may generate light. The light emitting encapsulation layer 123 may generate light using various light sources such as a cold cathode fluorescent lamp (CCFL), an external electrode fluorescent lamp (EEFL), a hot cathode fluorescent lamp (HCFL), and a light emitting diode (LED).

[0054] The light-emitting encapsulation layer 123 may include a plurality of light-emitting units. The plurality of light-emitting units may include, for example, at least one first light-emitting unit, a plurality of second light-emitting units, and at least one third light-emitting unit. The first light-emitting unit and the third light-emitting unit may be light-emitting units of the same type, and the second light-emitting unit may be a light-emitting unit of a type that is distinguished or different from the first light-emitting unit or the third light-emitting unit. A more detailed description thereof will be described later.

[0055] According to an embodiment, the light emitting encapsulation layer 123 may be divided into a plurality of regions. For example, the light emitting encapsulation layer 123 may be divided into a first region and a second region. At least one first light emitting unit and a plurality of second light emitting units may be disposed in the first region. At least one third light emitting unit may be disposed in the second region. Figure 4 A more detailed example of the planar arrangement of the light emitting units in the first area and the second area is described.

[0056] The diffuser layer 125 diffuses the light emitted from the light-emitting encapsulation layer 123, thereby improving the uniformity of brightness according to the viewing angle. The diffuser layer 125 may be formed in the form of a plate having a hardness greater than a predetermined hardness, or may be formed in the form of a sheet having a hardness less than a predetermined hardness. In addition, the diffuser layer 125 may include at least one of polycarbonate resin, acrylic resin, polyurethane, polyester, fluororesin, silicone resin, polyamide-imide, epoxy resin, and ultraviolet curable resin. In addition, the light diffusion material may be distributed in the diffuser layer 125. The light diffusion material may include at least one of titanium oxide, zinc oxide, barium sulfate, calcium carbonate, magnesium carbonate, aluminum hydroxide, and clay. Moreover, resin beads may be distributed in the diffuser layer 125. The resin beads may include at least one of acrylic resin, acrylonitrile resin, polyurethane, polyvinyl chloride, polystyrene, polyacrylonitrile, and polyamide.

[0057] The prism layer 127 improves the front brightness of the display panel 110 by controlling the direction of light passing through the diffuser layer 125. For example, the prism layer 127 may include an upper prism sheet and a lower prism sheet, in which prism patterns are formed, and the axes of the prism patterns are arranged orthogonally to each other. The prism layer 127 may be configured in the form of a sheet having a hardness less than a predetermined hardness. The prism layer 127 may be formed of a transparent material to allow light to pass through. For example, the prism layer 127 may include at least one of acrylic resin, polyurethane, polyester, fluororesin, silicone resin, polyamide-imide, epoxy resin, and ultraviolet curing resin.

[0058] In an implementation, the prism layer 127 may be formed of polyethylene terephthalate (PET). In some cases, the prism layer 127 may include at least two or more layers, but is not limited thereto, and may consist of one layer.

[0059] The polarization layer 129 may be a reflective polarization layer. For example, the polarization layer 129 may have a structure in which left circular polarization layers and right circular polarization layers are alternately stacked, and the brightness may be improved by such a structure. In the polarization layer 129, light in the same direction as the polarization direction is transmitted. In addition, light in a direction different from the polarization direction passes through the polarization layer 129 by changing the traveling direction by a reflector. The above-mentioned polarization layer 129 may be classified as a reflective polarization layer, and since there is no light loss compared to an absorptive polarization layer, the brightness may be improved. However, the configuration of the present specification is not limited thereto, and polarization layers with different functions may be applied. The polarization layer 129 may be referred to as a dual brightness enhancement film (DBEF) according to the configuration, but is not limited thereto.

[0060] According to an embodiment, the display device 100 may further include an optical film such as a light control film (LCF). However, the present disclosure is not limited thereto.

[0061] Figure 4 An arrangement of a light emitting unit included in a display device according to an embodiment of the present specification is shown. Figure 5 Shows Figure 4 Example of section A-A'. Figure 6 Shows Figure 4 Hereinafter, the cross section BB' will be described together. Figures 4 to 6 .

[0062] refer to Figure 4 , the display device 100 may include a first area 111 and a second area 112. The first area 111 may include an area that can be driven in a viewing angle restriction mode or a normal mode. The second area 112 may include an area that can be driven in a normal mode.

[0063] The first region 111 may include a plurality of light emitting packages 210. Figure 4 As shown, the plurality of light emitting packages 210 may be arranged to have a plurality of columns and rows along the first direction D1 and the second direction D2.

[0064] The light emitting package 210 may include a first light emitting unit 201 and a second light emitting unit 202. At least one first light emitting unit 201 and a plurality of second light emitting units 202 may be provided in one light emitting package 210. Figure 4 As shown, the light emitting package 210 may include one first light emitting unit 201 and four second light emitting units 202 .

[0065] refer to Figure 4 , the plurality of second light emitting units 202 may be arranged to surround at least one first light emitting unit 201. For example, the plurality of second light emitting units 202 are arranged around the first light emitting unit 201, and the plurality of second light emitting units 202 may be spaced apart from the first light emitting unit 201 by a predetermined interval. Figure 4 As shown, each of the four second light-emitting units 202 surrounding one first light-emitting unit 201 may be a 2-1st light-emitting unit, a 2-2nd light-emitting unit, a 2-3rd light-emitting unit, and a 2-4th light-emitting unit. In addition, at least one first light-emitting unit may include a 1-1st light-emitting unit. In this case, a plurality of second light-emitting units may be arranged around the 1-1st light-emitting unit, and the plurality of second light-emitting units may be spaced apart from the 1-1st light-emitting unit by a predetermined interval. Alternatively, the 2-1st light-emitting unit, the 2-2nd light-emitting unit, the 2-3rd light-emitting unit, and the 2-4th light-emitting unit may be arranged around the 1-1st light-emitting unit with the 1-1st light-emitting unit as the center.

[0066] The second region 112 may include a plurality of third light emitting units 203. Figure 4 As shown, the plurality of third light emitting units 203 may be arranged to have a plurality of columns and a plurality of rows along the first direction D1 and the second direction D2.

[0067] In an embodiment, the third light emitting unit 203 may have the same configuration as the first light emitting unit 201. In this case, the third light emitting unit 203 may be a term referring to the first light emitting unit 201 disposed in the second region 112. However, the present disclosure is not limited thereto, and according to an embodiment, the third light emitting unit 203 may be implemented in a configuration different from the first light emitting unit 201, or may be different from the first light emitting unit 201.

[0068] In an embodiment, the third light emitting unit 203 may be disposed in the second region 112 to correspond to the arrangement of the first light emitting unit 201 in the first region 111. For example, the intervals and arrangements between the third light emitting units 203 in the second region 112 may be consistent with the intervals and arrangements between the first light emitting units 201 in the first region 111. For another example, the first light emitting unit 201 or the third light emitting unit 203 may be disposed at regular intervals in the first region 111 and the second region 112. In this case, the second light emitting unit 202 may be disposed around the first light emitting unit 201 in the first region 111, and the arrangement of the second light emitting unit 202 may be omitted in the second region 112.

[0069] In an embodiment, the first light emitting unit 201 and the third light emitting unit 203 may be light emitting units that do not limit the viewing angle. Examples of the first light emitting unit 201 and the third light emitting unit 203 can refer to Figure 7 and Figure 8 The second light emitting unit 202 may be a light emitting unit that limits the viewing angle. Figures 9 to 11 .

[0070] Figure 5 Shows Figure 4In this case, the AA' line may be a line that intersects the first light emitting unit 201 in the first region 111 and also intersects the second light emitting unit 202 disposed on one side of the first light emitting unit 201 and the second light emitting unit 202 disposed on the other side of the first light emitting unit 201.

[0071] The first region 111 may include a cover bottom 151 , a substrate 152 , a light emitting encapsulation layer 153 , a diffuser layer 154 , a prism layer 155 , a polarizing layer 156 , and a display panel 157 .

[0072] The cover bottom 151 may correspond to Figure 3 The cover bottom 121 shown in FIG. The cover bottom 151 can accommodate and fix at least one component disposed on the cover bottom 151.

[0073] The substrate 152 corresponds to Figure 3 The substrate 122 is shown and may be disposed on the cover bottom 151. The substrate 152 may include a plurality of circuits and a printed circuit board.

[0074] The light emitting encapsulation layer 153 may correspond to Figure 3 The light emitting encapsulation layer 123 is shown and may be disposed on the substrate 152. The light emitting encapsulation layer 153 may include a plurality of light emitting units and may drive the plurality of light emitting units by being connected to a printed circuit board.

[0075] In an embodiment, the first light emitting unit 201 and the second light emitting unit 202 may be disposed in the light emitting encapsulation layer 153. The first light emitting unit 201 may be disposed between the second light emitting units 202. Figure 5 As shown, one first light emitting unit 201 may be disposed between two second light emitting units 202. In addition, the distance between the first light emitting unit 201 and each of the two second light emitting units 202 may be constant.

[0076] In an embodiment, the first light emitting unit 201 may include at least one of a frame, a light emitting chip, a filling layer, and a reflective layer. In addition, the second light emitting unit 202 may include at least one of a frame, a light emitting chip, a filling layer, a partition wall, and a light control unit. Figure 7 and Figure 8 Each configuration of the first light emitting unit 201 is described in detail in Figures 9 to 13 Each configuration of the second light emitting unit 202 is described in detail in FIG. Figure 4 As described above, the first light emitting unit 201 and the plurality of second light emitting units 202 disposed around the first light emitting unit 201 may be referred to as a light emitting package. Figure 4The light emitting package may include a first light emitting unit 201 and four second light emitting units 202 disposed around the first light emitting unit 201 .

[0077] In an embodiment, the light emitting package may be configured as a group. For example, the light emitting package may be provided on a separate substrate and may exist as a separate configuration. In this case, the light emitting package layer 153 may be provided by a combination of a plurality of light emitting packages.

[0078] The diffuser layer 154 may correspond to Figure 3 The diffuser layer 124 shown in the figure can be disposed on the light emitting encapsulation layer 153. The diffuser layer 154 can be formed in the form of a plate having a hardness greater than a predetermined hardness, or can be formed in the form of a sheet having a hardness less than a predetermined hardness. Moreover, the light diffusion material and / or the resin beads can be distributed in the diffuser layer 154. As a result, the light incident on the diffuser layer 154 can be scattered, so that the light can be effectively diffused.

[0079] The prism layer 155 corresponds to Figure 3 The prism layer 127 shown in the figure may be disposed on the diffuser layer 154. The prism layer 155 may be configured in the form of a sheet having a hardness less than a predetermined hardness, and may have a thickness thinner than that of the diffuser layer 154. Moreover, the prism layer 155 may be more flexible than the diffuser layer 154.

[0080] The polarization layer 156 may correspond to Figure 3 The polarizing layer 129 is shown and may be disposed on the prism layer 155. The polarizing layer 156 may be formed in the form of a film. The polarizing layer 156 may be formed of a flexible and thin material, but is not limited thereto.

[0081] The display panel 157 corresponds to Figure 3 The display panel 110 shown in FIG. 1 may be disposed on the polarization layer 156. Figure 3 As shown, the display panel 157 may include a lower substrate and an upper substrate coupled to face each other, and a liquid crystal layer interposed between the lower substrate and the upper substrate. However, the present disclosure is not limited thereto.

[0082] In an embodiment, the prism layer 155 and the polarization layer 156 may be formed to have the same thickness, but are not limited thereto. In some cases, the thickness of each of the prism layer 155 and the polarization layer 156 may be equal to or less than 1 / 10 of the thickness of the diffuser layer 154 .

[0083] In an embodiment, the display panel 157 may include gate lines and data lines arranged to cross each other, and liquid crystal cells formed in the crossing area of ​​the gate lines and the data lines. The display panel 157 may include a plurality of transistors. The display panel 157 may include a color filter for realizing a plurality of colors including red, green, and blue, a black matrix for dividing the color filter and blocking light passing through the liquid crystal layer, and a common electrode for applying a voltage to the liquid crystal layer may be formed. According to an embodiment, the display panel 157 may be referred to as a board assembly (B / A), but is not limited thereto.

[0084] A cover glass (or cover window) 158 may be disposed on the display panel 157. The cover glass 158 may be formed of transparent glass, and may be formed to cover the display panel 157. The cover glass 158 may protect the display panel 157.

[0085] exist Figure 5 and Figure 6 In the present invention, the same configuration is represented by the same figure mark, and the contents overlapping with the previously described contents will be omitted hereinafter.

[0086] refer to Figure 6 , the third light emitting unit 203 may be disposed in the second region 112. The third light emitting unit 203 may correspond to Figure 5 For example, the third light emitting unit 203 and the first light emitting unit 201 may be the same device. In addition, in the second region 112, the third light emitting units 203 may be arranged at regular intervals.

[0087] In an embodiment, the arrangement interval of the third light emitting cells 203 may be the same as the arrangement interval of the first light emitting cells 201 in the first region 111. However, the present disclosure is not limited thereto, and the arrangement interval of the third light emitting cells 203 may be narrower than that of the first light emitting cells 201.

[0088] Figure 7 is a diagram illustrating a first light emitting unit or a third light emitting unit of a display device according to an embodiment of the present specification. Figure 8 Shows Figure 7 Example of a cross section of C-C'. Figure 8 In, with Figure 7 The same configurations are represented by the same reference numerals. Figure 7 and Figure 8 .

[0089] refer to Figure 7 and Figure 8, the first light emitting unit 201 or the third light emitting unit 203 may have a hexahedral shape. The first light emitting unit 201 or the third light emitting unit 203 may include a frame 171 , a light emitting chip 172 , a filling layer 173 , and a reflective layer 174 .

[0090] The frame 171 may be disposed on a substrate of the display device to be electrically connected to a circuit formed on the substrate or other components connected to the substrate. The frame 171 may be made of a metal material, but is not limited thereto.

[0091] The light emitting chip 172 may be disposed on at least a portion of the frame 171. Figure 8 As shown, the light emitting chip 172 may be disposed on the central area of ​​the frame 171. The light emitting chip 172 may be configured to generate light. For example, the light emitting chip 172 may be connected to a circuit formed on a substrate to receive an electrical signal and may convert the electrical signal into light.

[0092] The filling layer 173 may be disposed around the light emitting chip 172. The filling layer 173 may be formed to cover the light emitting chip 172. In addition, the filling layer 173 may be disposed on the periphery of the light emitting chip 172 and on the remaining area of ​​the frame 171 where the light emitting chip 172 is not disposed. The filling layer 173 may include phosphors and resin. The filling layer 173 may extend the light emitting path to the left and right. For example, the filling layer 173 may extend the light emitting path to the upper surface and the side surface of the light emitting chip 172. The direction angle (i.e., the angle at which the filling layer 173 emits light) may correspond to a range of 170° to 190°. For example, the direction angle of the filling layer 173 may be 180°.

[0093] The reflective layer 174 may be disposed on the filling layer 173. The reflective layer 174 may be formed of a material that reflects light, such as a metal material. When the reflective layer 174 is disposed on the filling layer 173, light generated by the light emitting chip 172 may be emitted to a portion other than the portion where the reflective layer 174 is disposed. For example, when the reflective layer 174 is disposed on the light emitting chip 172, the light may be emitted to a side surface of the light emitting chip 172.

[0094] Figures 9 to 13 An example of a second light emitting unit of a display device according to an embodiment of the present specification is shown. Figure 7 and Figure 8 The same components are represented by the same reference numerals, and the overlapping contents of specific components may be omitted. Figures 9 to 13 Each of the diagrams shows a Figure 8 Different configurations of the cross section of the second light emitting unit are shown.

[0095] In an embodiment, the second light emitting unit 202 may have a structure similar to Figure 7The first light emitting unit 201 has a hexahedral shape. Fig. 9 and Fig.12 The second light emitting unit 202 of the embodiment may have a hexahedral shape.

[0096] refer to Fig. 9 , the second light emitting unit 202 may include a frame 191, a light emitting chip 193, a filling layer 195, a partition wall 197, and a shutter 199. The frame 191 may be disposed on a substrate of the display device and electrically connected to a circuit formed on the substrate or other components connected to the substrate. The frame 191 may be formed of a metal material, but is not limited thereto.

[0097] The light emitting chip 193 may be disposed on at least a portion of the frame 191. Fig. 9 As shown, the light emitting chip 193 may be disposed on the central area of ​​the frame 191. The light emitting chip 193 may be configured to generate light. For example, the light emitting chip 193 may be connected to a circuit formed on a substrate to receive an electrical signal, and may convert the electrical signal into light.

[0098] The filling layer 195 may be disposed around the light emitting chip 193. The filling layer 195 may be formed to cover the light emitting chip 193. In addition, the filling layer 195 may be disposed on the periphery of the light emitting chip 193 and on the remaining area of ​​the frame 191 where the light emitting chip 193 is not disposed. The filling layer 195 may include phosphors and resin. The filling layer 195 may extend the light emitting path. For example, the filling layer 195 may further extend the light emitting path to the upper surface and the side surface of the light emitting chip 193.

[0099] The shutter 199 may be disposed on the filling layer 195. The shutter 199 may include a plurality of barrier films and a plurality of units separated by the plurality of barrier films. One side of the plurality of barrier films may be in contact with the filling layer 195, and the other side may be exposed to the outside. In addition, each of the plurality of barrier films may be formed to be spaced apart. In addition, the plurality of units may be opened at the top and the bottom. That is, the internal areas of the plurality of units may be exposed to the outside. Therefore, when the light passing through the filling layer 195 is incident on the lower side of the unit of the shutter 199, the light may pass through the shutter 199.

[0100] In an embodiment, the plurality of blocking films may be formed of a material that reflects light. In another embodiment, the plurality of blocking films may be formed of a material that can block light, such as a black resin or ink. The angle between the plurality of blocking films and the lower side of the louver 199 may be specified as a value in a range of greater than -50° to less than +50°. For example, the angle between the plurality of blocking films and the lower side of the louver 199 may have a value greater than 0° and equal to or less than +10°, but is not limited thereto.

[0101] Depending on the configuration, light has various directions and can be incident on the louver 199. Depending on the incident angle of the light, some of the light is reflected by at least one of the multiple units, and the path of the light can be changed. For example, when the incident angle between the light and the lower side of the multiple units is equal to or greater than a specific angle, the light can enter the louver 199. In this case, the incident light can contact the blocking film of the louver 199. Therefore, the incident light is reflected by the blocking film, and the light path can be changed. In addition, when the incident angle formed by the light and the lower side of the multiple units is less than a specific angle, the light can enter the louver 199. In this case, the incident light can pass through the louver 199 and travel in the original path.

[0102] Each of the plurality of barrier films of the shutter 199 may have a predetermined angle with the upper surface of the light emitting chip 193 or the upper surface of the filling layer 195. According to an embodiment, the angle formed by the barrier film and the upper surface of the light emitting chip 193 or the upper surface of the filling layer 195 may be different for each of the plurality of barrier films. For a more specific example related to the arrangement of the barrier films, reference may be made to Fig.14A , Fig. 14B and Fig. 14C .

[0103] The partition wall 197 may surround at least a portion of the frame 191, the filling layer 195, and the shutter 199. One side surface of the partition wall 197 may be implemented in a square shape, but is not limited thereto. In addition, the height of the partition wall 197 may be greater than the sum of the heights of the frame 191, the filling layer 195, and the shutter 199.

[0104] In an embodiment, the partition wall 197 may be formed of a material capable of reflecting light, such as a metal material. In this case, light incident on the partition wall 197 through the filling layer 195 may be reflected to change the path of the light to the upper side where the louver 199 is disposed.

[0105] In an embodiment, at least a portion of the upper side of the partition wall 197 may be tilted to have an angle less than a certain angle with the louver 199, as shown in the figure. The tilt angle of the partition wall 197 may be adjusted according to the setting of the direction angle of the second light emitting unit 202. However, the present invention is not limited thereto, and the partition wall 197 may be implemented without tilting.

[0106] refer to Fig.10 , the second light emitting unit 202 may include a frame 191, a light emitting chip 193, a filling layer 195, a partition wall 197 and a lens 198. Fig.10 The frame 191, the light emitting chip 193 and the filling layer 195 are Fig. 9 The same as that of the partition wall 197, so the detailed description thereof will be omitted. Fig. 9The description is the same as the description of .

[0107] Fig.10 The partition wall 197 may surround the frame 191 and the filling layer 195. The plane of the partition wall 197 may be implemented in a square shape, but the present invention is not limited thereto.

[0108] In an embodiment, the partition wall 197 may be made of a material capable of reflecting light, such as a metal material. In this case, light incident on the partition wall 197 through the filling layer 195 may be reflected, and the path of the light may be changed to the upper side where the lens 198 is disposed.

[0109] The lens 198 may be disposed on the filling layer 195 and the partition wall 197. As shown in the figure, the lens 198 may have a convex shape toward the light path. As shown in the figure, the path of the light may be changed by the curved surface of the lens 198. That is, since the lens 198 has a convex shape, the light may have a specific direction angle. For example, the light may be focused in front of the display device by the lens 198, and the lateral viewing angle may be limited.

[0110] refer to Fig.11 The second light emitting unit 202 may include a frame 191, a light emitting chip 193, a filling layer 195, a partition wall 197, a lens 198, and a shutter 199. The frame 191, the light emitting chip 193, the filling layer 195, the partition wall 197, and the shutter 199 are Fig. 9 , so their detailed description will be omitted.

[0111] Fig.11 The lens 198 may be provided on the shutter 199. For example, as shown in the figure, the lens 198 may be provided on the upper surface of the shutter 199. The lens 198 may control the path of light so that the light passing through the shutter 199 is concentrated in front of the display device. Therefore, since the path of light can be doubly changed by the lens 198 and the shutter 199, it is possible to more easily perform convergence to the front of the display device.

[0112] refer to Fig.12 , the second light emitting unit 202 may include a frame 191 , a light emitting chip 193 , a filling layer 195 , and a partition wall 197 . Fig.12 The frame 191, the light emitting chip 193 and the filling layer 195 are Fig. 9 The same as that of the partition wall 197, so the detailed description thereof will be omitted. Fig. 9 The content is the same as the content.

[0113] Fig.12The second light emitting unit 202 may include a partition wall 197 surrounding the side surface of the frame 191 and the side surface of the filling layer 195. In this case, an opening portion 194 may be formed in an upper portion of the partition wall 197. The opening portion 194 may expose a partial area of ​​the upper surface of the filling layer 195. The opening portion 194 may overlap with the light emitting chip 193. The partition wall 197 may be made of a material that reflects light, and therefore, light incident on the partition wall 197 may be reflected from the inside of the opening portion 194 to converge in front of the display device. That is, the path of light emitted from the light emitting chip 193 may be controlled by the opening portion 194.

[0114] According to the embodiment, the shape of the opening 194 of the partition wall 197 may vary. For example, Fig.12 The plane of the opening 194 of the partition wall 197 can be implemented as a combination of a circle, a rectangle or a semicircle. When the plane of the opening 194 is implemented as a combination of semicircles, at least a portion of the partition wall 197 can be further arranged Fig.12 The center of the opening 194. In this case, the opening 194 can be provided on both sides of the further provided partition wall.

[0115] refer to Fig.13 The second light emitting unit 202 may include a frame 191 , a light emitting chip 193 , a filling layer 195 , and a lens 198 . Fig.12 The frame 191, the light emitting chip 193 and the filling layer 195 are Fig. 9 The same as that of the partition wall 198, so its detailed description will be omitted. Fig.10 The content is the same as the content.

[0116] Fig.13 The second light emitting unit 202 may include a lens 198 surrounding the side surface of the frame 191 and the upper and side surfaces of the filling layer 195. The lens 198 may have a convex shape. At least a portion of the lens 198 that contacts the side surface of the frame 191 and the side surface of the filling layer 195 may have a predetermined thickness or more. Therefore, the path of light to the side surface can be limited, and it can be converged in front of the display device.

[0117] Fig.14A , Fig. 14B and Fig. 14C An example of a blind of a display device according to an embodiment of the present specification is shown. Fig.14A , Fig. 14B and Fig. 14C is a cross-sectional view of the shutter 199. Fig.14A , Fig. 14B and Fig. 14C , the shutter 199 may be divided into a plurality of cells 142 by a plurality of barrier films 141 .

[0118] Fig.14A and Fig. 14B An example is shown in which the blocking film 141 of the louver 199 is disposed perpendicularly to the lower surface of the louver 199 .

[0119] Fig. 14C FIG. 1 shows an example in which the blocking film 141 of the louver 199 is disposed at a predetermined angle relative to the lower surface of the louver 199. Fig. 14C In the embodiment, the angle between a portion of the blocking film 141 of the louver 199 and the lower side of the louver 199 may be set to be different from the angle between another portion of the blocking film 141 and the lower side of the louver 199. The blocking film 141 of the louver 199 may be set so that its upper side is closer to the central axis C of the louver 199 than its lower side. In this case, light incident to the louver 199 can be more easily concentrated in front of the display device.

[0120] refer to Fig. 14C , the angle between the blocking film 141 and the central axis C may correspond to a range greater than -40° and less than +40°. In an embodiment, the angle between each of the plurality of blocking films 141 and the central axis C may be different for each blocking film 141, but the angle between each of the blocking films 141 and the central axis C may correspond to a range greater than -40° and less than +40°. For example, when the blocking film 141 includes a first blocking film and a second blocking film, the angle between the first blocking film and the central axis C may be 10°, and the angle between the second blocking film and the central axis C may be 15°.

[0121] Fig.15 An arrangement of a light emitting unit included in a display device according to another embodiment of the present specification is shown. Fig.15 An example of uniform arrangement of light emitting units in a light emitting encapsulation layer of a display device is shown.

[0122] refer to Fig.15 , the first light emitting unit 201 and the second light emitting unit 202 may be disposed in the first area 111 and the second area 112. For example, the light emitting package 210 including the first light emitting unit 201 and the second light emitting unit 202 may be disposed in the first area 111 and the second area 112. The light emitting package 210 may be disposed to form a row in the first direction D1 and the second direction D2.

[0123] In this case, the position of the first area 111 in the display area may be determined based on software control. For example, when the first area 111 is driven in the viewing angle restriction mode, the second light emitting unit 202 included in the portion determined as the first area 111 may be controlled to emit light. When the first area 111 is driven in the viewing angle restriction mode, the first light emitting unit 201 included in the portion determined as the first area 111 may be controlled not to emit light. When the second area 112 is driven in the normal mode, the second light emitting unit 202 included in the portion determined as the second area 112 may be controlled not to emit light. When the second area 112 is driven in the normal mode, the first light emitting unit 201 included in the portion determined as the second area 112 may be controlled to emit light.

[0124] A display device according to an exemplary configuration of the present specification includes a substrate; a light-emitting package disposed in a first region on the substrate, the light-emitting package including at least one first light-emitting unit and a plurality of second light-emitting units; at least one third light-emitting unit disposed in a second region on the substrate; and a display panel disposed on the light-emitting package and the at least one third light-emitting unit. In addition, the plurality of second light-emitting units include a light-emitting chip and a light control unit disposed on the light-emitting chip.

[0125] In one configuration, the light control unit includes at least one of a shutter and a lens. The plurality of second light-emitting units may include a frame disposed below the light-emitting chip, the frame being connected to the substrate, a filling layer covering the light-emitting chip, and a partition wall surrounding a side surface of the frame and a side surface of the filling layer. In addition, the light control unit may include the shutter disposed on the filling layer, and a height of the partition wall may be greater than a sum of heights of the frame, the filling layer, and the shutter.

[0126] In one configuration, the shutter includes a plurality of barrier films and a plurality of cells divided by the plurality of barrier films, and each of the plurality of barrier films is disposed to have a predetermined angle with the light emitting chip.

[0127] In one configuration, the lens may have a convex shape. The light control unit includes the shutter disposed on the light emitting chip and the lens disposed on the shutter, and may change a path of light emitted from the light emitting chip through the shutter and the lens.

[0128] In one configuration, the display device further includes a polarizing layer disposed below the display panel, a prism layer disposed below the polarizing layer, and a diffuser layer disposed below the prism layer.

[0129] In one configuration, the plurality of second light-emitting units surround the at least one first light-emitting unit. The plurality of second light-emitting units include a 2-1st light-emitting unit, a 2-2nd light-emitting unit, a 2-3rd light-emitting unit, and a 2-4th light-emitting unit, and the at least one first light-emitting unit includes a 1-1st light-emitting unit, and the 2-1st light-emitting unit, the 2-2nd light-emitting unit, the 2-3rd light-emitting unit, and the 2-4th light-emitting unit may be arranged around the 1-1st light-emitting unit.

[0130] In an embodiment, the at least one first light emitting unit and the at least one third light emitting unit may include a light emitting chip, a filling layer disposed on the light emitting chip, and a reflective layer disposed on the filling layer.

[0131] According to the present disclosure, the following advantageous effects can be obtained.

[0132] According to the present disclosure, a plurality of light conversion layers may be formed, so that light efficiency may be improved and reflectivity due to external light may be reduced.

[0133] It is obvious to those skilled in the art that the above disclosure is not limited by the above embodiments and drawings, and various substitutions, modifications and changes can be made in the disclosure without departing from the spirit or scope of the disclosure. Therefore, the scope of the disclosure is defined by the appended claims, and it is intended that all changes or modifications derived from the meaning, scope and equivalent concepts of the claims fall within the scope of the disclosure.

Claims

1. A display device, comprising: substrate; a light emitting package, the light emitting package being disposed in the first region on the substrate, the light emitting package comprising at least one first light emitting unit and a plurality of second light emitting units; at least one third light emitting unit, wherein the at least one third light emitting unit is disposed in the second region on the substrate; as well as a display panel, the display panel being disposed on the light-emitting package and the at least one third light-emitting unit; The plurality of second light emitting units include a light emitting chip and a light control unit disposed on the light emitting chip. 2 . The display device according to claim 1 , wherein the light control unit comprises at least one of a shutter and a lens.

3. The display device according to claim 1, wherein the plurality of second light emitting units include a frame disposed below the light emitting chip, the frame being connected to the substrate, a filling layer, the filling layer covering the light emitting chip; and A partition wall surrounds a side surface of the frame and a side surface of the filling layer. The display device according to claim 3 , wherein the partition wall is formed of a material capable of reflecting light.

5. The display device according to claim 3, wherein the light control unit comprises a louver disposed on the filling layer, and The height of the partition wall is greater than the sum of the heights of the frame, the filling layer and the shutters. The display device according to claim 5 , wherein an upper side of the partition wall is inclined relative to the louver. 7 . The display device according to claim 3 , wherein the partition wall further covers a partial region of the upper surface of the filling layer and forms an opening portion exposing another partial region of the upper surface of the filling layer. The display device according to claim 7 , wherein the opening portion overlaps with the light emitting chip.

9. The display device according to claim 2, wherein the shutter comprises a plurality of barrier films and a plurality of cells separated by the plurality of barrier films, and Each of the plurality of barrier films is disposed to have a predetermined angle with the light emitting chip. 10 . The display device according to claim 9 , wherein the plurality of blocking films are disposed such that an upper side of each of the plurality of blocking films is closer to the central axis with respect to the louver than a corresponding one of the plurality of blocking films. The display device according to claim 2 , wherein the lens has a convex shape.

12. The display device according to claim 11, wherein the plurality of second light emitting units include a frame disposed below the light emitting chip, the frame being connected to the substrate; and a filling layer, wherein the filling layer covers the light emitting chip, The lens surrounds the side surface of the frame and the upper surface and side surfaces of the filling layer.

13. The display device according to claim 2, wherein the light control unit comprises the shutter provided on the light emitting chip and the lens provided on the shutter, and The path of light emitted from the light emitting chip is changed by the shutter and the lens.

14. The display device according to claim 1, further comprising a polarizing layer, the polarizing layer being arranged below the display panel; a prism layer, the prism layer being arranged below the polarization layer; as well as A diffuser layer is disposed below the prism layer. 15 . The display device according to claim 14 , further comprising a cover glass disposed on the display panel. 16 . The display device according to claim 2 , wherein the plurality of second light emitting units surround the at least one first light emitting unit. 17 . The display device according to claim 16 , wherein the plurality of second light emitting units include a 2-1st light emitting unit, a 2-2nd light emitting unit, a 2-3rd light emitting unit, and a 2-4th light emitting unit, The at least one first light emitting unit includes a 1-1 light emitting unit, and The 2-1st light emitting unit, the 2-2nd light emitting unit, the 2-3rd light emitting unit and the 2-4th light emitting unit are arranged around the 1-1st light emitting unit. 18 . The display device according to claim 1 , wherein the at least one first light emitting unit and the at least one third light emitting unit include a light emitting chip, a filling layer disposed on the light emitting chip, and a reflective layer disposed on the filling layer. 19 . The display device according to claim 1 , wherein an arrangement of the at least one third light emitting unit in the second region corresponds to an arrangement of the at least one first light emitting unit in the first region.

20. A display device, comprising: substrate; A light-emitting package, wherein the light-emitting package is disposed on the substrate, and the light-emitting package includes at least one first light-emitting unit and a plurality of second light-emitting units; and A display panel, wherein the display panel is disposed on the light-emitting package; wherein the plurality of second light-emitting units include a light-emitting chip and a light control unit disposed on the light-emitting chip, Wherein the substrate is dynamically divided into a first area and a second area based on software control, the at least one first light-emitting unit located in the first area is controlled not to emit light, the multiple second light-emitting units located in the first area are controlled to emit light, the at least one first light-emitting unit located in the second area is controlled to emit light, and the multiple second light-emitting units located in the second area are controlled not to emit light.

21. The display device according to claim 20, wherein the light control unit comprises at least one of a shutter and a lens.

22. The display device according to claim 21, wherein the shutter comprises a plurality of barrier films and a plurality of cells separated by the plurality of barrier films, and Each of the plurality of barrier films is disposed to have a predetermined angle with the light emitting chip.

23. The display device according to claim 21, wherein the lens has a convex shape.

24. The display device according to claim 21, wherein the light control unit comprises the shutter provided on the light emitting chip and the lens provided on the shutter, and The path of light emitted from the light emitting chip is changed by the shutter and the lens.

Images