Backlight unit for display device

Abstract

Disclosed is a backlight unit for a display device, which includes a plurality of light sources arranged in a matrix pattern on at least one substrate, each of the plurality of light sources including a red light emitting diode, a green light emitting diode, and a blue light emitting diode; a frame accommodating the substrate, the frame including an accommodation portion in which the substrate is disposed and a side portion extending obliquely from an edge of the accommodation portion; a reflective sheet covering the substrate, the reflective sheet including a central portion covering the substrate and a chamfered portion covering the side portion; and a phosphor located on the chamfered portion. The backlight unit for a display device of the present invention can improve color expressiveness, brightness, stereoscopic effect, white light, and color separation phenomenon, and can expand a viewing angle. The backlight unit for a display device of the present invention can reduce manufacturing cost.

Description

Technical Field

[0001] This invention relates to a backlight unit for a display device. Background Technology

[0002] With the development of the information society, the requirements for display devices have also increased in various forms. Correspondingly, in recent years, various display devices such as LCD (Liquid Crystal Display Device), PDP (Plasma Display Panel), ELD (Electroluminescent Display), and VFD (Vacuum Fluorescent Display) have been researched and applied.

[0003] The LCD panel can be provided with a TFT substrate and a color substrate facing each other with a liquid crystal layer between them, and can display images using light provided from the backlight unit.

[0004] Recently, with increasing attention to the image quality of display devices, color performance or color reproduction that is close to true color has received important attention, and a lot of research has been conducted on backlight units for display devices that improve light uniformity and are used to achieve true color. Summary of the Invention

[0005] The purpose of this invention is to solve the aforementioned problems and other issues.

[0006] Another objective is to provide a backlight unit for a display device that can improve image quality.

[0007] Another objective is to provide a backlight unit for a display device that can improve color performance.

[0008] Another objective is to provide a backlight unit for a display device that can improve brightness.

[0009] Another objective is to provide a backlight unit for a display device that can improve the sense of depth.

[0010] Another objective is to provide a backlight unit for a display device that can expand the viewing angle.

[0011] Another objective is to provide a backlight unit for a display device that can improve the performance of white light.

[0012] Another objective is to provide a backlight unit for a display device that includes a red light-emitting diode, a green light-emitting diode, and a blue light-emitting diode.

[0013] Another objective is to provide a backlight unit for a display device that can improve color separation.

[0014] Another objective is to provide a backlight unit for display devices that can reduce manufacturing costs.

[0015] According to one aspect of the invention for achieving the aforementioned yet another object, a backlight unit for a display device may include: a plurality of light sources arranged in a matrix pattern on at least one substrate, each of the plurality of light sources including a red light-emitting diode (LED), a green light-emitting diode, and a blue light-emitting diode; a frame for housing the substrate, the frame including a receiving portion for arranging the substrate and a side portion extending obliquely from an edge of the receiving portion; a reflective sheet covering the substrate, the reflective sheet including a central portion covering the substrate and a chamfered portion covering the side portion; and a phosphor located on the chamfered portion.

[0016] According to one aspect of the invention for achieving the aforementioned further objective, a backlight unit for a display device may include: a plurality of light sources arranged in a matrix pattern on a substrate, each of the plurality of light sources including a red light-emitting diode (LED), a green light-emitting diode, and a blue light-emitting diode; a frame for housing the substrate, the frame including a receiving portion for accommodating the substrate and a side portion extending obliquely from an edge of the receiving portion; and a reflective sheet having a central portion covering the substrate and a chamfered portion covering the side portion; the plurality of light sources including: a plurality of corner light sources disposed at four corners of the matrix pattern; and a plurality of first outline light sources arranged in a first row of the matrix pattern, located between the plurality of corner light sources; the red light-emitting diode, the green light-emitting diode, and the blue light-emitting diode of each of the plurality of first outline light sources are arranged randomly along the row direction of the matrix pattern.

[0017] According to one aspect of the invention for achieving the aforementioned further objective, a backlight unit for a display device may include: a plurality of light sources arranged in a matrix pattern on at least one substrate; a frame housing the substrate, the frame including a receiving portion for arranging the substrate and side portions extending obliquely from the edges of the receiving portion; a reflective sheet covering the substrate, the reflective sheet including a central portion covering the substrate and a chamfered portion covering the side portions; and a phosphor located on the chamfered portions; the plurality of light sources includes: a plurality of outer contour light sources arranged in a first row, a last row, a first column, and a last column in the matrix pattern; and a plurality of inner contour light sources, including red light-emitting diodes (LEDs), green light-emitting diodes, and blue light-emitting diodes, surrounded by the plurality of outer contour light sources; at least a portion of the plurality of outer contour light sources may correspond to a blue light-emitting diode.

[0018] The effects of the backlight unit for the display device of the present invention will be explained below.

[0019] According to at least one embodiment of the present invention, a backlight unit for a display device that can improve image quality can be provided.

[0020] According to at least one embodiment of the present invention, a backlight unit for a display device capable of improving color performance can be provided.

[0021] According to at least one embodiment of the present invention, a backlight unit for a display device capable of improving brightness can be provided.

[0022] According to at least one embodiment of the present invention, a backlight unit for a display device capable of improving stereoscopic effect can be provided.

[0023] According to at least one embodiment of the present invention, a backlight unit for a display device capable of expanding the viewing angle can be provided.

[0024] According to at least one embodiment of the present invention, a backlight unit for a display device that can improve the performance of white light can be provided.

[0025] According to at least one embodiment of the present invention, a backlight unit for a display device comprising a red light-emitting diode, a green light-emitting diode, and a blue light-emitting diode can be provided.

[0026] According to at least one embodiment of the present invention, a backlight unit for a display device that can improve color separation phenomena can be provided.

[0027] According to at least one embodiment of the present invention, a backlight unit for a display device that can reduce manufacturing costs can be provided.

[0028] The scope of applicability of the present invention will become clear from the following detailed description. However, since those skilled in the art will readily understand the various changes and modifications within the spirit and scope of the invention, the detailed description and specific embodiments, such as preferred embodiments, should be understood only by way of illustration. Attached Figure Description

[0029] Figures 1 to 61 This is a diagram illustrating a backlight unit for a display device and an example of a display device including the backlight unit of the present invention, according to a plurality of embodiments thereof.

[0030] Explanation of reference numerals in the attached figures

[0031] 100: Display device; 105: Front cover

[0032] 110: Display Panel 117: Guide Panel

[0033] 120: Backlight unit; 122: Substrate

[0034] 123: Optical layer; 125: Optical sheet

[0035] 126: Reflector 126C: Chamfered section

[0036] 126P: Central part; 127: Fluorescent material

[0037] 129: Diffuser plate 130: Frame

[0038] 131: Receiving section 133: Side section

[0039] 150: Back cover 200: Light source

[0040] 200x: Outer contour light source; 200xa: First outer contour light source

[0041] 200xb: Second outer contour light source; 200xc: Third outer contour light source

[0042] 200xd: Fourth outer contour light source; 200xe: Corner light source

[0043] 210: Red LED; 220: Green LED

[0044] 230: Blue LED 240: Protective lens

[0045] 250: Protective lens; 252: First electrode pad

[0046] 252: Second electrode pad; 253: Third electrode pad

[0047] 260: Reflective coating layer; 270: Chip substrate Detailed Implementation

[0048] Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings, and the same or similar components will be given the same reference numerals, regardless of the drawing numbers, and repeated descriptions thereof will be omitted.

[0049] The suffixes “module” and “section” used for the constituent elements in the following description are merely assigned or used interchangeably for the convenience of writing the instruction manual, and do not inherently distinguish one another from the other.

[0050] Furthermore, when describing the embodiments disclosed in this specification, detailed descriptions of related well-known technologies are omitted if it is determined that such detailed descriptions may obscure the spirit of the embodiments disclosed in this specification. Additionally, the accompanying drawings are only used to aid in understanding the embodiments disclosed in this specification, and the technical concepts disclosed in this specification are not limited by the drawings. They should be understood to include all modifications, equivalents, and substitutions within the scope of the ideas and techniques outlined in this specification.

[0051] Terms containing ordinal numbers, such as "first" and "second," can be used to describe various constituent elements, but the constituent elements are not limited by these terms. These terms are used only for the purpose of distinguishing one constituent element from others.

[0052] When a constituent element is referred to as "connected" or "linked" to another constituent element, it should be understood that it may be directly connected to or linked to the other constituent element, but there may also be other constituent elements between them. Conversely, when a constituent element is referred to as "directly connected" or "directly linked" to another constituent element, it should be understood that there are no other constituent elements between them.

[0053] Unless the context clearly indicates otherwise, singular expressions include plural expressions.

[0054] In this application, terms such as “comprising” or “having” are used only to specify the presence of features, numbers, steps, actions, constituent elements, components or combinations thereof as described in the specification, and are not intended to exclude the possibility of the presence or addition of one or more other features or numbers, steps, actions, constituent elements, components or combinations thereof.

[0055] The directions shown in the accompanying drawings—U (up), D (down), Le (left), Ri (right), F (front), and R (rear)—are for illustrative purposes only, and the technical concepts disclosed in this specification are not limited thereto.

[0056] Reference Figure 1 The display device 100 may include a display panel 110. The display panel 110 may display images.

[0057] The display device 100 may include a first long side LS1, a second long side LS2 opposite to the first long side LS1, a first short side SS1 adjacent to the first long side LS1 and the second long side LS2, and a second short side SS2 opposite to the first short side SS1. On the other hand, for ease of explanation, the case in which the lengths of the first long side LS1 and the second long side LS2 are greater than the lengths of the first short side SS1 and the second short side SS2 is shown and explained. However, the lengths of the first long side LS1 and the second long side LS2 may also be approximately the same as the lengths of the first short side SS1 and the second short side SS2.

[0058] The directions parallel to the long sides LS1 and LS2 of the display device 100 can be called the left-right directions. The directions parallel to the short sides SS1 and SS2 of the display device 100 can be called the up-down directions. The directions perpendicular to the long sides LS1 and LS2 and the short sides SS1 and SS2 of the display device 100 can be called the front-back directions.

[0059] The direction in which the image is displayed on the display panel 110 can be referred to as the front (F, z) and the opposite direction as the rear (R). The first long side LS1 can be referred to as the top side (U, y) and the second long side LS2 can be referred to as the bottom side (D). The first short side SS1 can be referred to as the left side (Le, x) and the second short side SS2 can be referred to as the right side (Ri).

[0060] The first long side LS1, the second long side LS2, the first short side SS1, and the second short side SS2 can be referred to as the edges of the display device 100. The position where the first long side LS1, the second long side LS2, the first short side SS1, and the second short side SS2 meet each other can be referred to as the corner.

[0061] The position where the first short side SS1 and the first long side LS1 meet is called the first corner Ca. The position where the first long side LS1 and the second short side SS2 meet is called the second corner Cb. The position where the second short side SS2 and the second long side LS2 meet is called the third corner Cc. The position where the second long side LS2 and the first short side SS1 meet is called the fourth corner Cd.

[0062] Reference Figure 2 and Figure 3 The display device 100 may include a display panel 110, a front cover 105, a guide panel 117, a backlight unit 120, a frame 130, and a rear cover 150.

[0063] The display panel 110 can form the front of the display device 100 and can display images. The display panel 110 can display images by outputting the RGB (Red, Green, or Blue) of each pixel in a time-matched manner.

[0064] Display panel 110 may have a rectangular shape. Display panel 110 may be available in various sizes. The size of display panel 110 may be the size of the diagonal length of the screen, measured in inches. For example, display panel 110 may be approximately 115 inches, approximately 100 inches, approximately 86 inches, or approximately 75 inches in size.

[0065] The display panel 110 can be divided into an active area for displaying images and a de-active area for not displaying images.

[0066] The display panel 110 may include a front plate 1101 and a rear plate 1105 that are opposite to each other and separated by a liquid crystal layer 1103. The front plate 1101 of the display panel 110 may be referred to as the first polarizing plate 1101, and the rear plate 1105 may be referred to as the second polarizing plate 1105. The display panel 110 may be referred to as an LCD panel.

[0067] The front panel 1101 may include a plurality of pixels formed by red sub-pixels, green sub-pixels, and blue sub-pixels. The front panel 1101 may output light corresponding to red, green, or blue according to a control signal.

[0068] The back panel 1105 may include a plurality of switching elements. The back panel 1105 can switch pixel electrodes on and off. For example, the pixel electrodes can change the molecular arrangement of the liquid crystal layer according to a control signal input from an external source.

[0069] The liquid crystal layer 1103 may include a plurality of liquid crystal molecules. The arrangement of the plurality of liquid crystal molecules may change in response to the voltage difference generated between the pixel electrode and the common electrode. The liquid crystal layer 1103 may transmit or block the transmission of light provided from the backlight unit 120 to the front panel 1101.

[0070] The front panel 1101 can be attached to the liquid crystal layer 1103 by the first adhesive layer 1102, and the rear panel 1105 can be attached to the liquid crystal layer 1103 by the second adhesive layer 1104.

[0071] The front cover 105 may cover at least a portion of the front and side surfaces of the display panel 110. The front cover 105 may be divided into a front cover located on the front of the display panel 110 and a side cover located on the side surfaces. At least one of the front cover and the side cover may be omitted.

[0072] The guide panel 117 may surround the periphery of the display panel 110 and cover the sides of the display panel 110. The guide panel 117 may be combined with or support the display panel 110.

[0073] The backlight unit 120 may be located behind the display panel 110. The backlight unit 120 may include a plurality of light sources. The backlight unit 120 may be integrated with the frame 130 in front of the frame 130. The backlight unit 120 may be driven in a global driving mode or in a local driving mode such as local dimming or impulsive driving. The backlight unit 120 may include an optical sheet 125 and an optical layer 123.

[0074] The optical sheet 125 can uniformly transmit light from the light source to the display panel 110. The optical sheet 125 can be composed of multiple layers. For example, the optical sheet 125 may include a prism layer or a diffusion layer. For example, the optical sheet 125 may include a double brightness enhancement film (DBEF). On the other hand, the bonding portion 125e of the optical sheet 125 can be bonded to the front cover 105, the frame 130, or the rear cover 150.

[0075] The frame 130 can be located behind the backlight unit 120 and can support the configuration of the display device 100. For example, a PCB (Printed Circuit Board) containing the backlight unit 120 and a plurality of electronic components can be attached to the frame 130. The frame 130 can be referred to as the cover bottom 130.

[0076] The rear cover 150 can cover the rear of the frame 130. The rear cover 150 can be attached to the frame 130 and / or the front cover 105.

[0077] Reference Figure 4 and Figure 5 The backlight unit 120 may include an optical layer 123 and an optical sheet 125. The optical layer 123 may include at least one substrate 122, at least one light source 200, a reflector 126, and a diffuser 129.

[0078] At least one substrate 122 may be attached to the front side of the frame 130. Each of the plurality of substrates 122 may have a plate shape. However, it is not limited thereto; the plurality of substrates 122 may be composed of a plurality of strips separated from each other in the vertical direction. Alternatively, each of the plurality of substrates 122 may also have a fork shape comprising a long, extending first plate and a plurality of second plates intersecting the first plate.

[0079] The substrate 122 may include at least one of polyethylene terephthalate (PET), glass, polycarbonate (PC), and silicon. The substrate 122 may be a PCB (Printed Circuit Board).

[0080] At least one light source 200 may be mounted on the substrate 122. A plurality of light sources 200 may be spaced apart on the substrate 122. Electrode patterns may be formed on the substrate 122. The electrode patterns may electrically connect the adapter and the plurality of light sources 200. For example, the electrode patterns may connect the plurality of light sources 200 and the adapter, and the electrode patterns may include carbon nanotubes.

[0081] The light source 200 may be a light-emitting diode (LED) package including a light-emitting diode (LED) chip or at least one LED chip. The light source 200 may be composed of colored LEDs that emit at least one color: red, green, or blue. For example, the light source 200 may include a red LED that emits red light, a green LED that emits green light, and a blue LED that emits blue light.

[0082] Thus, light source 200 can combine red, green, and blue light to achieve white light. For example, light source 200 can achieve white light corresponding to color coordinates (approximately 0.281, approximately 0.288) and / or a color temperature of approximately 10000K by combining red, green, and blue light.

[0083] A plurality of light sources 200 can be arranged in a matrix pattern. For example, the plurality of light sources 200 can be arranged along the long and short sides of the display device 100. The row direction of the matrix pattern can be parallel to the long side of the display device 100. The column direction of the matrix pattern can be parallel to the short side of the display device 100. For example, the column direction of the matrix pattern can be parallel to the vertical direction, and the row direction of the matrix pattern can be parallel to the horizontal direction.

[0084] However, not limited to this, on the contrary, the row direction and column direction of the matrix pattern can also be parallel to the short side direction and long side direction of the display device 100, respectively.

[0085] The reflector 126 may be located in front of the substrate 122. The reflector 126 may have a plurality of holes 126h through which a plurality of light sources 200 pass. For example, the plurality of light sources 200 may be exposed onto the reflector 126 through the plurality of holes 126h of the reflector 126.

[0086] The reflector 126 may include at least one of a metal or metal oxide as the reflective material. For example, the reflector 126 may include a metal and / or metal oxide with high reflectivity, such as at least one of aluminum (Al), silver (Ag), gold (Au), or titanium dioxide (TiO2). The reflector 126 may reflect light from a plurality of light sources 200 or light reflected from the diffuser 129 forward.

[0087] A diffuser plate 129 can be located in front of the reflector 126. The diffuser plate 129 can receive light from a plurality of light sources 200. The diffuser plate 129 can diffuse the light from the plurality of light sources 200. A support member (not shown) can be located between the reflector 126 and the diffuser plate 129, and can support the back side of the diffuser plate 129. An air gap can be formed between the reflector 126 and the diffuser plate 129, through which the light from the plurality of light sources 200 can be diffused relatively widely. The diffuser plate 129 can be referred to as an optical plate 129.

[0088] Optical sheet 125 may be located in front of diffuser plate 129. Optical sheet 125 may be provided between diffuser plate 129 and display panel 110. The back side of optical sheet 125 may be in close contact with diffuser plate 129, and the front side of optical sheet 125 may be in close contact with or adjacent to the back side of display panel 110. Optical sheet 125 may include at least one layer.

[0089] For example, the optical sheet 125 may include a plurality of layers having different functions from each other. The first optical layer 1251 may be a diffusion layer, and the second optical layer 1252 and the third optical layer 1253 may be prism layers. The prism layers can focus the light emitted from the diffuser 129 and provide it to the display panel 110. The diffusion layers can make the light distribution more uniform by preventing the light emitted from the diffuser 129 from being partially concentrated. The number and / or position of the prism layers and diffusion layers can be varied.

[0090] Reference Figure 6 and Figure 7Each of the plurality of light sources 200 may include a plurality of light-emitting diodes (LEDs) configured to emit light of different colors from each other. Each of the plurality of light sources 200 may include at least one of a red LED 210, a green LED 220, and a blue LED 230. For example, each of the plurality of light sources 200 may include a red LED 210, a green LED 220, and a blue LED 230. For example, the light source 200 may be referred to as an RGB light source 200 or (a plurality of) RGB LEDs.

[0091] Each of the plurality of light sources 200 can achieve white light by combining red, green, and blue light emitted from a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230. For example, each of the plurality of light sources 200 can achieve white light corresponding to color coordinates (approximately 0.281, approximately 0.288) and / or a color temperature of approximately 10,000 K.

[0092] The red LED 210, green LED 220, and blue LED 230 can each have a light-emitting area. A light-emitting area can refer to the sum of multiple light paths emitted from the LED. For example, the red LED 210 can have a red light-emitting area, the green LED 220 can have a green light-emitting area, and the blue LED 230 can have a blue light-emitting area.

[0093] The light-emitting areas of the red LED 210, green LED 220, and blue LED 230 can be formed in the order of their arrangement. For example, the red LED 210, green LED 220, and blue LED 230 can be arranged sequentially along the y-direction, and the red, green, and blue light-emitting areas can also be formed sequentially along the y-direction.

[0094] The red, green, and blue luminescent regions can overlap. The area where these three regions overlap is called the white luminescent region Rc. Red, green, and blue light can be combined within the white luminescent region Rc to achieve white light.

[0095] A portion of the red, green, and blue luminescent regions may not overlap. For example, the red, green, and blue luminescent regions may be formed sequentially along the y-direction. A portion Ro1 of the plurality of red luminescent regions located at the edge may not overlap with other luminescent regions; this portion of the plurality of red luminescent regions can be referred to as the first colored luminescent region Ro1. Similarly, a portion Ro2 of the plurality of blue luminescent regions located at the edge may not overlap with other luminescent regions; this portion of the plurality of blue luminescent regions can be referred to as the second colored luminescent region Ro2. The first colored luminescent region Ro1 may be red, and the second colored luminescent region Ro2 may be blue.

[0096] However, this is not the only limitation; the colors of the first and second colored light-emitting regions can differ depending on the configuration of the plurality of light-emitting diodes.

[0097] In another embodiment, depending on the characteristics of the protective lens (e.g., curvature, refractive index, etc.), the arrangement of the plurality of light-emitting regions can be different from the arrangement of the plurality of light-emitting diodes. For example, the red light-emitting diode 210, the green light-emitting diode 220, and the blue light-emitting diode 230 can be arranged sequentially along the y-direction, and the blue, green, and red light-emitting regions can also be formed sequentially along the y-direction. This is because the light from the plurality of light-emitting diodes can be refracted when passing through the protective lens 240.

[0098] For ease of explanation, Figures 6 to 7 The red light-emitting diode 210, green light-emitting diode 220, and blue light-emitting diode 230 of the light source 200 are shown separately. However, in one embodiment, the red light-emitting diode 210, green light-emitting diode 220, and blue light-emitting diode 230 of the light source 200 may each be provided as a single or multiple units, depending on the design.

[0099] Hereinafter, the red LED 210, the green LED 220, and the blue LED 230 can be referred to as LEDs, and one of the red LED 210, the green LED 220, and the blue LED 230 can be referred to as an LED.

[0100] Multiple light-emitting diodes can be directly mounted on the substrate 122. For example, the light source 200 can be formed as a COB (Chip-On-Board) type.

[0101] The substrate 122 may include electrode patterns (not shown) configured to supply power to the light-emitting diodes 210, 220, and 230. The electrode patterns may be electrically connected to the light-emitting diodes 210, 220, and 230. The electrode patterns may include a conductive material. For example, the electrode patterns may include copper (Cu).

[0102] The substrate 122 may also include an insulating layer (not labeled) on the side where the light-emitting diodes 210, 220, and 230 are mounted. This insulating layer may be referred to as a PSR layer (Photoimageable Solder Resistlayer). The insulating layer may cover most of the electrode pattern of the substrate 122. A portion of the electrode pattern may be exposed by the insulating layer. The light-emitting diodes 210, 220, and 230 may be provided on the exposed portion of the electrode pattern. The light-emitting diodes 210, 220, and 230 may be in direct or indirect contact with or connected to a portion of the electrode pattern. For example, a plurality of electrode pads may be provided between the light-emitting diodes 210, 220, and 230 and the electrode pattern, enabling electrical connection between the light-emitting diodes 210, 220, and 230 and the electrode pattern. The electrode pads may include a conductive material. For example, the electrode pads may include lead (Pb).

[0103] Each of the plurality of light sources 200 may further include a protective lens 240 covering the light-emitting diodes 210, 220, and 230. The protective lens 240 may be mounted on one side of the substrate 122. The protective lens 240 may protrude from one side of the substrate 122. The protective lens 240 may have a dome shape or a hemispherical shape. Thus, the protective lens 240 can protect the light-emitting diodes 210, 220, and 230. Additionally, the protective lens 240 can also diffuse the light emitted from the light-emitting diodes 210, 220, and 230. The protective lens 240 may comprise a transparent or translucent material. For example, the protective lens 240 may comprise silicon or a synthetic polymer.

[0104] Reference Figure 8 and Figure 9 In one embodiment, each of the plurality of light sources 200 may further include a chip substrate 270 on which light-emitting diodes 210, 220, and 230 are mounted, and a protective lens 250 on the chip substrate 270. The light-emitting diodes 210, 220, and 230 may be directly mounted on the chip substrate 270. The chip substrate 270 may be mounted on a substrate 122. For example, the light source 200 may be formed as a CSP (Chip Scale Package) type.

[0105] Chip substrate 270 can be electrically connected to substrate 122. Electrode pads 251, 252, and 253 can be provided between chip substrate 270 and substrate 122. Electrode pads 251, 252, and 253 can electrically connect light-emitting diodes 210, 220, and 230 mounted on chip substrate 270 to substrate 122. Electrode pads 251, 252, and 253 can include a conductive material. For example, electrode pads 251, 252, and 253 can include lead (Pb).

[0106] Electrode pads 251, 252, and 253 may include a first electrode pad 251 electrically connected to a red LED 210, a second electrode pad 252 electrically connected to a green LED 220, and a third electrode pad 253 electrically connected to a blue LED 230. The first electrode pad 251 may be located below the red LED 210. The second electrode pad 252 may be located below the green LED 220. The third electrode pad 253 may be located below the blue LED 230.

[0107] Each of the plurality of light sources 200 may further include a protective lens 250 covering the light-emitting diodes 210, 220, and 230. The protective lens 250 may be provided on one side of the chip substrate 270. The protective lens 250 may have a hexahedral shape. Thus, the protective lens 250 can protect the light-emitting diodes 210, 220, and 230. The protective lens 250 may contain a transparent or translucent material. For example, the protective lens 250 may include silicon or a synthetic polymer.

[0108] Similarly, the light source can have a white emitting region Rc, a first colored emitting region Ro1, and a second colored emitting region Ro2, based on the red, green, and blue emitting regions. The arrangement of the red, green, and blue emitting regions can correspond to the arrangement of the red LED 210, green LED 220, and blue LED 230. However, it is not limited to this; depending on the refractive index of the protective lens 250, the arrangement of the red, green, and blue emitting regions can also differ from the arrangement of the red LED 210, green LED 220, and blue LED 230.

[0109] Reference Figure 10 A plurality of substrates 122 may be separated from each other. A plurality of substrates 122 may be housed in a frame 130. A plurality of substrates 122 may be provided between the frame 130 and the reflector 126. For example, 10 substrates 122 may be arranged in a 5x2 matrix pattern.

[0110] The frame 130 may have an overall quadrilateral tray shape. The frame 130 may include a central portion 131, a side portion 133, and a seating portion 130H, 130V.

[0111] The receiving portion 131 can be a quadrilateral plate, and the substrate 122 can be attached to the front side of the receiving portion 131. The receiving portion 131 can be referred to as the base 131.

[0112] Side portion 133 extends obliquely forward from the edge of receiving portion 131. First side portion 133a extends obliquely forward from the top of receiving portion 131. The angle between first side portion 133a and the front surface of receiving portion 131 can be an obtuse angle. Second side portion 133b extends obliquely forward from the bottom of receiving portion 131. The angle between second side portion 133b and the front surface of receiving portion 131 can be an obtuse angle. Third side portion 133c extends obliquely forward from the right side of receiving portion 131. The angle between third side portion 133c and the front surface of receiving portion 131 can be an obtuse angle. Fourth side portion 133d extends obliquely forward from the left side of receiving portion 131. First side portions to fourth side portions 133a, 133b, 133c, and 133d can be connected to each other.

[0113] The mounting portions 130H and 130V can extend from the end of the side portion 133 in a direction parallel to the receiving portion 131. The vertical portion 130V can extend in a vertical direction (i.e., up-down direction) and can form the left and right sides of the frame 130. The horizontal portion 130H can extend in a horizontal direction (i.e., left-right direction) and can form the top and bottom sides of the frame 130.

[0114] A reflective sheet 126 may cover a substrate 122, and a plurality of light sources 200 on the substrate 122 may be located in a plurality of holes 126h in the reflective sheet 126. The reflective sheet 126 may have a shape corresponding to the frame 130. The reflective sheet 126 may include a central portion 126P and a chamfer portion 126C. The central portion 126P may have a quadrilateral shape. The central portion 126P may have a shape corresponding to the receiving portion 131, and the substrate 122 may be covered by the central portion 126P.

[0115] The chamfered portion 126C can be bent forward at an angle from the edge of the central portion 126P. The chamfered portion 126C can have a shape corresponding to the side portion 133, and the chamfered portion 126C can cover the side portion 133 of the frame 130.

[0116] The first chamfered portion 126Ca can be bent forward at an angle from the top edge of the central portion 126P. The first chamfered portion 126Ca can cover the first side portion 133a. A portion 126Cae of the first chamfered portion 126Ca can be bent to rest on the horizontal portion 130H extending from the first side portion 133a. The second chamfered portion 126Cb can be bent forward at an angle from the bottom edge of the central portion 126P. The second chamfered portion 126Cb can cover the second side portion 133b. A portion 126Cbe of the second chamfered portion 126Cb can be bent to rest on the horizontal portion 130H extending from the second side portion 133b. The third chamfered portion 126Cc can be bent forward at an angle from the right side of the central portion 126P. The third chamfered portion 126Cc can cover the third side portion 133c. A portion 126Cce of the third chamfered portion 126Cc can be bent to rest on the vertical portion 130V extending from the third side portion 133c. The fourth chamfer 126Cd can be bent forward at an angle from the left side of the central portion 126P. The fourth chamfer 126Cd can cover the fourth side portion 133d. A portion 126Cde of the fourth chamfer 126Cd can be bent to be placed on the vertical portion 130V extending from the fourth side portion 133d.

[0117] Will Figure 11 and Figure 10 Referring together, a plurality of substrates 122 may be provided below the reflective sheet 126. The reflective sheet 126 may cover the plurality of substrates 122. For example, the central portion 126P of the reflective sheet 126 may cover 10 substrates 122 arranged in a 5x2 matrix pattern. For example, the first to fifth substrates 122a-122e may be arranged adjacent to the first chamfered portion 126Ca, and the sixth to tenth substrates 122f-122j may be arranged adjacent to the second chamfered portion 126Cb. However, this is only exemplary, and the number and arrangement of the plurality of substrates 122 may vary depending on the design and size of the display device 100.

[0118] A plurality of light sources 200 can be mounted on a plurality of substrates 122 below the reflector 126. The plurality of light sources 200 can penetrate the reflector 126. The plurality of light sources 200 can protrude onto the central portion 126P of the reflector 126. The plurality of holes in the reflector 126 can be arranged in a matrix pattern. The configuration of the plurality of holes in the reflector 126 can correspond to the configuration of the plurality of light sources 200.

[0119] A plurality of light sources 200 can be arranged in a matrix pattern. The plurality of light sources 200 can be arranged in a plurality of rows along the row direction of the matrix pattern. The plurality of light sources 200 can be arranged in a plurality of columns along the column direction of the matrix pattern. The plurality of rows of the matrix pattern can be parallel to the first chamfer 126Ca and the second chamfer 126Cb. The plurality of columns of the matrix pattern can be parallel to the third chamfer 126Cc and the fourth chamfer 126Cd. The number of the plurality of rows of the matrix pattern can be less than the number of the plurality of columns of the matrix pattern. However, this is not a limitation; the number of the plurality of rows of the matrix pattern can also be greater than the number of the plurality of columns of the matrix pattern.

[0120] The plurality of light sources 200 may include a plurality of outer contour light sources 200x arranged along the edge of the matrix pattern. The plurality of outer contour light sources 200x may include a plurality of first outer contour light sources 200xa arranged in the first row Ro1 of the matrix pattern. The plurality of first outer contour light sources 200xa may be adjacent to the first chamfered portion 126Ca of the reflector 126. The plurality of first outer contour light sources 200xa may be arranged in a row along the first chamfered portion 126Ca of the reflector 126.

[0121] The plurality of outer contour light sources 200x may include a plurality of second outer contour light sources 200xb arranged in the last row RoN of the matrix pattern. The plurality of second outer contour light sources 200xb may be adjacent to the second chamfered portion 126Cb of the reflector 126. The plurality of second outer contour light sources 200xb may be arranged in a row along the second chamfered portion 126Cb of the reflector 126.

[0122] The plurality of outer contour light sources 200x may include a plurality of third outer contour light sources 200xc arranged in the first column Co1 of the matrix pattern. The plurality of third outer contour light sources 200xc may be adjacent to the third chamfered portion 126Cc of the reflector 126. The plurality of third outer contour light sources 200xc may be arranged in a row along the third chamfered portion 126Cc of the reflector 126.

[0123] The plurality of outer contour light sources 200x may include a plurality of fourth outer contour light sources 200xd arranged in the last column CoN of the matrix pattern. The plurality of fourth outer contour light sources 200xd may be adjacent to the fourth chamfer 126Cd of the reflector 126. The plurality of fourth outer contour light sources 200xd may be arranged in a column along the fourth chamfer 126Cd of the reflector 126.

[0124] The plurality of outer contour light sources 200x may include a plurality of corner light sources 200xe arranged at the four corners of the matrix pattern. A portion of the plurality of corner light sources 200xe may be included in a plurality of first outer contour light sources 200xa, and the remainder of the plurality of corner light sources 200xe may be included in a plurality of second outer contour light sources 200xb. In addition, a portion of the plurality of corner light sources 200xe may be included in a plurality of third outer contour light sources 200xc, and the remainder of the plurality of corner light sources 200xe may be included in a plurality of fourth outer contour light sources 200xd. For example, one of the plurality of corner light sources 200xe can be located in the first row Ro1 and the first column Co1, another of the plurality of corner light sources 200xe can be located in the first row Ro1 and the last column CoN, still another of the plurality of corner light sources 200xe can be located in the last row RoN and the first column Co1, and the remaining one of the plurality of corner light sources 200xe can be located in the last row RoN and the last column CoN.

[0125] A plurality of first outer contour light sources 200xa may include a plurality of corner light sources 200xe, and the remaining portions of the plurality of first outer contour light sources 200xa, excluding the corner light sources 200xe, may be located between the corner light sources 200xe. A plurality of second outer contour light sources 200xb may include a plurality of corner light sources 200xe, and the remaining portions of the plurality of second outer contour light sources 200xb, excluding the corner light sources 200xe, may be located between the corner light sources 200xe. A plurality of third outer contour light sources 200xc may include a plurality of corner light sources 200xe, and the remaining portions of the plurality of third outer contour light sources 200xc, excluding the corner light sources 200xe, may be located between the corner light sources 200xe. The plurality of fourth outer contour light sources 200xd may include the plurality of corner light sources 200xe, and the portion of the plurality of fourth outer contour light sources 200xd other than the plurality of corner light sources 200xe may be located between the plurality of corner light sources 200xe.

[0126] The plurality of light sources 200 may include a plurality of inner light sources 200n surrounded by a plurality of outer contour light sources 200x. The plurality of outer contour light sources 200x may be provided between the plurality of inner light sources 200n and the chamfered portion 126C. The plurality of inner light sources 200n may be separated from the chamfered portion 126C by the plurality of outer contour light sources 200x.

[0127] A plurality of light sources 200 may be provided on each of the plurality of substrates 122. For example, the plurality of light sources 200 may be mounted on each of the plurality of substrates 122 in an 8x6 matrix pattern. That is, the plurality of light sources 200 may be arranged on each of the plurality of substrates 122 in a matrix pattern formed by eight rows and six columns. However, this is only exemplary, and the number and arrangement of the plurality of light sources 200 may vary depending on the design and size of the display device 100.

[0128] Figure 12 yes Figure 11 A magnified view of the SA region.

[0129] Reference Figure 12 A plurality of light sources 200 can be mounted on a third substrate 122c. The third substrate 122c can be provided below the reflector 126. The plurality of light sources 200 can be arranged in a matrix pattern on the third substrate 122c. For example, the plurality of light sources 200 can be arranged in an 8x6 matrix pattern on the third substrate 122c.

[0130] The matrix pattern can have a complex number of rows. A complex number of light sources 200 can be arranged along a complex number of rows. For example, six light sources 200 can be arranged in each of the first to eighth rows Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2.

[0131] A portion of the light emitted from the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca. For example, colored light from the plurality of colored emitting regions of the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca.

[0132] A phosphor 127 may be provided on the first chamfered portion 126Ca. The phosphor 127 may be coated on the first chamfered portion 126Ca. The phosphor 127 may be printed on the first chamfered portion 126Ca. The phosphor 127 can convert colored light irradiated onto the first chamfered portion 126Ca into white light. For example, the phosphor 127 may absorb colored light irradiated onto the first chamfered portion 126Ca and emit white light. The phosphor 127 may include a yellow phosphor, a cyan phosphor, and a magenta phosphor.

[0133] Reference Figure 13Each of the plurality of light sources 200 may include a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230. The red light-emitting diodes 210, 220, and 230 may be arranged in a direction independent of their order. For example, the red light-emitting diodes 210, 220, and 230 may be arranged sequentially along the y-direction. A green light-emitting diode 220 may be provided between the red light-emitting diodes 210 and 230.

[0134] The red LED 210, green LED 220, and blue LED 230 can each extend long. For example, they can extend long along the x-direction. The length direction of the red LED 210, green LED 220, and blue LED 230 can intersect with their arrangement direction. For example, they can extend long along the x-direction and be arranged sequentially along the y-direction.

[0135] The lengths of the red LED 210, green LED 220, and blue LED 230 can be substantially the same. For example, each of the red LED 210, green LED 220, and blue LED 230 can extend long along the x-direction, and their lengths L1 can be substantially the same.

[0136] The widths of the red LED 210, green LED 220, and blue LED 230 can be measured in a direction intersecting the length direction. For example, the widths of the red LED 210, green LED 220, and blue LED 230 can be measured in a y-direction orthogonal to the length direction. The width of the red LED 210 can be greater than the widths of the green LED 220 and blue LED 230. The width of the green LED 220 can be substantially the same as the width of the blue LED 230.

[0137] The red LED 210, green LED 220, and blue LED 230 can each have a quadrilateral shape. The aspect ratio of the red LED 210 can be smaller than that of the green LED 220 and the blue LED 230. The aspect ratios of the green LED 220 and the blue LED 230 can be substantially the same. The aspect ratio can be defined as the ratio of the horizontal length to the vertical length. For example, the aspect ratio can be defined as the ratio of the length to the width of the LED.

[0138] Each of the red LED 210, green LED 220, and blue LED 230 may have a light-emitting surface. The light-emitting surfaces of the red LED 210, green LED 220, and blue LED 230 may face the display panel 110. The light-emitting surfaces of the red LED 210, green LED 220, and blue LED 230 may be defined in a plan view. A plan view may refer to a view viewed in a direction facing the light-emitting surfaces of the red LED 210, green LED 220, and blue LED 230.

[0139] The light-emitting area of ​​the red LED 210 can be greater than or equal to the light-emitting area of ​​the green LED 220 and / or the blue LED 230. The light-emitting area of ​​the red LED 210 can be approximately 1.3 times larger than that of the green LED 220 or the blue LED 230. For example, the light-emitting area of ​​the red LED 210 can be approximately 2.0 times larger than that of the green LED 220 and the blue LED 230. The light-emitting area refers to the area of ​​the light-emitting surface of the LED.

[0140] The light-emitting area of ​​the blue LED 230 can be substantially the same as that of the green LED 220.

[0141] This improves the heat dissipation performance of the red LED 210.

[0142] In addition, it can minimize the performance degradation of the red light-emitting diode 210 caused by heat.

[0143] In addition, it can improve the white light realization performance of light source 200.

[0144] Alternatively, a backlight unit 120 for a display device that can improve color performance and / or brightness can be provided.

[0145] Red LED 210, green LED 220, and blue LED 230 can be arranged along the width direction. Alternatively, they can be arranged in any order along the width direction. For example, green LED 220, red LED 210, and blue LED 230 can be arranged sequentially along the width direction.

[0146] Red LED 210, green LED 220, and blue LED 230 can be in contact with each other along their arrangement direction. For example, green LED 220, red LED 210, and blue LED 230 can be arranged sequentially without gaps. Adjacent sides of red LED 210, green LED 220, and blue LED 230 can overlap. For example, one side of green LED 220 can overlap with one side of red LED 210, and the other side of red LED 210 can overlap with one side of blue LED 230. The light-emitting areas of red LED 210, green LED 220, and blue LED 230 can be continuously arranged. The light-emitting surfaces of red LED 210, green LED 220, and blue LED 230 can form a single light-emitting surface.

[0147] In a plan view, the red LED 210, green LED 220, and blue LED 230 can form the perimeter of a quadrilateral. For example, in a plan view, the red LED 210, green LED 220, and blue LED 230 can form the perimeter of a square.

[0148] In a plan view, the light source 200 may have a quadrilateral shape. The sum of the widths of the red LED 210, the green LED 220, and the blue LED 230 may correspond to the width of the light source 200. The length L1 of the red, green, or blue LED 230 may correspond to the length L1 of the light source 200. For example, the length L1 of the light source 200 may correspond to approximately 0.75 to approximately 1.25 times the width L2 of the light source 200.

[0149] In a plan view, the light source 200 may have a square shape. For example, the width L1 of the light source 200 may be substantially the same as the length L2 of the light source 200. For example, the sum L2 of the widths of the red LED 210, the green LED 220, and the blue LED 230 may be substantially the same as the length L1 of the red LED, the green LED, or the blue LED 230.

[0150] Therefore, the light-emitting areas of the red LED 210, the green LED 220, and the blue LED 230 can overlap to the maximum extent.

[0151] In addition, it can improve the white light realization performance of light source 200.

[0152] Alternatively, a backlight unit 120 for a display device that can improve image quality can be provided.

[0153] Alternatively, a backlight unit 120 for a display device that can improve color performance can be provided.

[0154] Alternatively, a backlight unit 120 for a display device that can improve brightness can be provided.

[0155] Alternatively, a backlight unit 120 for a display device that can improve the sense of depth can be provided.

[0156] Alternatively, a backlight unit 120 for a display device can be provided that can improve color separation phenomena.

[0157] Alternatively, a backlight unit 120 for a display device that can expand the viewing angle can be provided.

[0158] Will Figure 14 and Figure 13 Referring also, the backlight unit 120 for the display device may further include at least one electrode pad provided between the light source 200 and the substrate 122. The at least one electrode pad may include a first electrode pad 251 that electrically connects a red light-emitting diode 210 to the substrate 122, a second electrode pad 252 that electrically connects a green light-emitting diode 220 to the substrate 122, and a third electrode pad 253 that electrically connects a blue light-emitting diode 230 to the substrate 122.

[0159] A first electrode pad 251 may be provided below the red light-emitting diode 210. The red light-emitting diode 210 may cover the first electrode pad 251. For example, the red light-emitting diode 210 may completely cover the first electrode pad 251. In a plan view, the first electrode pad 251 may completely overlap with the red light-emitting diode 210. For example, in a plan view, the first electrode pad 251 may be located inside the frame of the red light-emitting diode 210.

[0160] The first electrode pad 251 can be electrically connected to the electrode pattern of the substrate 122. The first electrode pad 251 can contact the red light-emitting diode 210 and the substrate 122.

[0161] The first electrode pad 251 may include a pair of first electrode pads 251a and 251b electrically connected to the red light-emitting diode 210. The pair of first electrode pads 251a and 251b may correspond to different electrodes. For example, one of the first electrode pads 251a and 251b may correspond to the positive electrode, and the other of the first electrode pads 251a and 251b may correspond to the negative electrode.

[0162] A pair of first electrode pads 251a and 251b can be separated from each other. For example, a pair of first electrode pads 251a and 251b can be separated from each other along the length of the red light-emitting diode 210. The spacing v1 between a pair of first electrode pads 251a and 251b can be greater than or equal to about 100 micrometers (μm). For example, the spacing v1 between a pair of first electrode pads 251a and 251b can be greater than or equal to about 150 micrometers.

[0163] The second electrode pad 252 may be provided below the green light-emitting diode 220. The green light-emitting diode 220 may cover the second electrode pad 252. For example, the green light-emitting diode 220 may completely cover the second electrode pad 252. In a plan view, the second electrode pad 252 may completely overlap with the green light-emitting diode 220. For example, in a plan view, the second electrode pad 252 may be located inside the frame of the green light-emitting diode 220.

[0164] The second electrode pad 252 can be electrically connected to the electrode pattern of the substrate 122. The second electrode pad 252 can contact the green light-emitting diode 220 and the substrate 122.

[0165] The second electrode pad 252 may include a pair of second electrode pads 252a and 252b electrically connected to the green light-emitting diode 220. The pair of second electrode pads 252a and 252b may correspond to different electrodes. For example, one of the pair of second electrode pads 252a and 252b, 252a, may correspond to the positive electrode, and the other of the pair of second electrode pads 252a and 252b may correspond to the negative electrode.

[0166] A pair of second electrode pads 252a and 252b can be separated from each other. For example, a pair of second electrode pads 252a and 252b can be separated from each other along the length of the green light-emitting diode 220. The spacing v2 between a pair of second electrode pads 252a and 252b can be greater than or equal to about 100 micrometers. For example, the spacing v2 between a pair of second electrode pads 252a and 252b can be greater than or equal to about 150 micrometers.

[0167] A third electrode pad 253 may be provided below the blue light-emitting diode 230. The blue light-emitting diode 230 may cover the third electrode pad 253. For example, the blue light-emitting diode 230 may completely cover the third electrode pad 253. In a plan view, the third electrode pad 253 may completely overlap with the blue light-emitting diode 230. For example, in a plan view, the third electrode pad 253 may be located inside the frame of the blue light-emitting diode 230.

[0168] The third electrode pad 253 can be electrically connected to the electrode pattern of the substrate 122. The third electrode pad 253 can contact the blue light-emitting diode 230 and the substrate 122.

[0169] The third electrode pad 253 may include a pair of third electrode pads 253a and 253b electrically connected to the blue light-emitting diode 230. The pair of third electrode pads 253a and 253b may correspond to different electrodes. For example, one of the pair of third electrode pads 253a and 253b, 253a, may correspond to the positive electrode, and the other of the pair of third electrode pads 253a and 253b may correspond to the negative electrode.

[0170] A pair of third electrode pads 253a and 253b can be separated from each other. For example, a pair of third electrode pads 253a and 253b can be separated from each other along the length of the blue light-emitting diode 230. The spacing v3 between a pair of third electrode pads 253a and 253b can be greater than or equal to about 100 micrometers. For example, the spacing v3 between a pair of third electrode pads 253a and 253b can be greater than or equal to about 150 micrometers.

[0171] Thus, a pair of electrode pads 251, 252, and 253 can be electrically connected to each other.

[0172] The first electrode pads to the third electrode pads 251, 252, and 253 can be separated from each other. For example, the first electrode pads to the third electrode pads 251, 252, and 253 can be separated from each other along the arrangement direction or width direction of the red light-emitting diode 210, the green light-emitting diode 220, and the blue light-emitting diode 230. For example, the intervals a12, a23, b12, and b23 between the first electrode pads to the third electrode pads 251, 252, and 253 can be greater than or equal to approximately 100 micrometers. The intervals a12 and b12 between the first electrode pad 251 and the second electrode pad 252 can be greater than or equal to approximately 100 micrometers. In addition, the intervals a23 and b23 between the second electrode pad 252 and the third electrode pad 253 can be greater than or equal to approximately 100 micrometers.

[0173] Specifically, the first electrode pad 251 can be separated from the side of the red light-emitting diode 210. For example, the spacing p1, q1 between the first electrode pad 251 and one side of the red light-emitting diode 210 can be greater than or equal to about 100 micrometers.

[0174] The second electrode pad 252 can be separated from one side of the green light-emitting diode 220. The second electrode pad 252 can be adjacent to the other side of the green light-emitting diode 220. The other side of the green light-emitting diode 220 can be opposite to one side. The other side of the green light-emitting diode 220 can overlap with one side of the red light-emitting diode 210. For example, the spacing p2, q2 between the second electrode pad 252 and one side of the green light-emitting diode 220 can be greater than or equal to about 50 micrometers.

[0175] The third electrode pad 253 can be separated from one side of the blue LED 230. One side of the blue LED 230 can overlap with one side of the green LED 220. The third electrode pad 253 can be adjacent to the other side of the blue LED 230. The other side of the blue LED 230 can be opposite to the side. For example, the spacing p3, q3 between the third electrode pad 253 and one side of the blue LED 230 can be greater than or equal to about 50 micrometers.

[0176] Therefore, the first electrode pads to the third electrode pads 251, 252, and 253 can be sufficiently separated from each other. For example, the spacing a12 and b12 between the first electrode pad 251 and the second electrode pad 252 can be greater than or equal to approximately 100 micrometers. The spacing a23 and b23 between the second electrode pad 252 and the third electrode pad 253 can be greater than or equal to approximately 100 micrometers. Thus, the first electrode pads to the third electrode pads 251, 252, and 253 can be de-electrically connected to each other.

[0177] In addition, the red LED 210, the green LED 220, and the blue LED 230 can receive currents of different magnitudes.

[0178] In addition, the current applied to the red LED 210, green LED 220, and blue LED 230 can be controlled independently.

[0179] Figure 15 yes Figure 12 A magnified view of the PEA region.

[0180] Will Figure 15 and Figure 11 and Figure 12Referring together, a plurality of light sources 200 can be arranged in the first row Ro1 of the matrix pattern. For example, six first outer contour light sources 200xa can be arranged along the x-direction in the first row Ro1 of the matrix pattern. The plurality of first outer contour light sources 200xa may include red light-emitting diodes 210, green light-emitting diodes 220, and blue light-emitting diodes 230. The red light-emitting diodes 210, green light-emitting diodes 220, and blue light-emitting diodes 230 of each of the plurality of first outer contour light sources 200xa can be arranged sequentially along the column direction (e.g., the y-direction) of the matrix pattern.

[0181] Each of the plurality of first outer contour light sources 200xa may include a first outer contour diode closest to the first chamfer 126Ca. For example, each of the plurality of first outer contour light sources 200xa may include a first outer contour diode closest to the first chamfer 126Ca, and the first outer contour diode may correspond to a blue light-emitting diode 230. The colors of the plurality of first outer contour diodes may be the same. For example, the plurality of first outer contour light sources 200xa arranged in the first row Ro1 of the matrix pattern may be arranged in the same direction, and the plurality of first outer contour diodes may be composed of a plurality of blue light-emitting diodes 230.

[0182] The first outermost diode may have a colored light-emitting region. The colored light-emitting region of the first outermost diode can illuminate the first chamfer 126Ca. For example, a portion of the light-emitting regions of the plurality of blue LEDs 230 closest to the first chamfer 126Ca can form a white light-emitting region, and the remaining portions of the light-emitting regions of the plurality of blue LEDs 230 can form a blue colored light-emitting region. The blue light from the colored light-emitting region can illuminate the first chamfer 126Ca.

[0183] A phosphor 127 may be provided on the first chamfered portion 126Ca. For example, a yellow phosphor 127a may be provided on the first chamfered portion 126Ca. The yellow phosphor 127 may face the first outermost diode composed of a plurality of blue light-emitting diodes 230. Thus, the yellow phosphor 127 may absorb the blue light from the plurality of blue light-emitting diodes 230 and emit white light.

[0184] This improves the color separation phenomenon that occurs at the chamfered portion 126C of the reflective sheet 126.

[0185] However, in one embodiment, the light irradiated onto the first chamfered portion 126Ca can be different depending on the characteristics of the protective lenses 240 and 250. For example, depending on the characteristics of the protective lens 240, the arrangement of the plurality of light-emitting regions can be formed in the opposite direction to the arrangement of the plurality of light-emitting diodes. Thus, a colored light-emitting region of the red light-emitting diode 210 located inside the light source 200 can be formed, and the red light from the colored light-emitting region can also irradiate the first chamfered portion 126Ca. A cyan phosphor can be provided on the first chamfered portion 126Ca. The cyan phosphor can absorb red light and emit white light.

[0186] In another embodiment, based on the characteristics of the protective lenses 240 and 250, a colored light-emitting region of the green light-emitting diode 220 located at the center of the light source 200 can be formed, and the green light from the colored light-emitting region can also illuminate the first chamfered portion 126Ca. A magenta phosphor can also be provided on the first chamfered portion 126Ca. The magenta phosphor can absorb green light and emit white light.

[0187] Figure 16 yes Figure 11 A magnified view of the SD region.

[0188] Will Figure 16 and Figure 11 Referring together, a plurality of light sources 200 can be mounted on a first substrate 122a. The first substrate 122a can be provided below the reflector 126. The plurality of light sources 200 can be arranged in a matrix pattern on the first substrate 122a. For example, the plurality of light sources 200 can be arranged in an 8x6 matrix pattern on the first substrate 122a.

[0189] The matrix pattern can have a complex number of rows. A complex number of light sources 200 can be arranged along the complex number of rows. For example, six light sources 200 can be arranged in each of the complex number of rows.

[0190] A portion of the light emitted from the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca. For example, colored light from the plurality of colored emitting regions of the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca.

[0191] A phosphor 127 may be provided on the first chamfered portion 126Ca. The phosphor 127 may be coated on the first chamfered portion 126Ca. The phosphor 127 may be printed on the first chamfered portion 126Ca. The phosphor 127 can convert colored light irradiated onto the first chamfered portion 126Ca into white light. For example, the phosphor 127 may absorb colored light irradiated onto the first chamfered portion 126Ca and emit white light.

[0192] At least a portion of the light emitted from the plurality of third outer contour light sources 200xc can illuminate the third chamfered portion 126Cc. In one embodiment, a phosphor 127 may also be provided on the third chamfered portion 126Cc.

[0193] Figure 17 yes Figure 16 A magnified view of the PC region.

[0194] Will Figure 17 and Figure 16 Referring together, in one embodiment, a plurality of first outline light sources 200xa may include a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230. For example, the red light-emitting diode 210, green light-emitting diode 220, and blue light-emitting diode 230 of each of the plurality of first outline light sources 200xa may be arranged sequentially along the column direction (e.g., the y-direction) of the matrix pattern.

[0195] Each of the plurality of first outer contour light sources 200xa may include a first outermost contour diode closest to the first chamfer 126Ca. For example, each of the plurality of first outer contour light sources 200xa may include a first outermost contour diode closest to the first chamfer 126Ca, and the first outermost contour diode may be composed of a plurality of blue light-emitting diodes 230. The colors of the plurality of first outermost contour diodes may be the same.

[0196] The first outermost diode may have a colored light-emitting region. The colored light from the colored light-emitting region of the first outermost diode can illuminate the first chamfered portion 126Ca. For example, a portion of the light-emitting regions of the plurality of blue light-emitting diodes 230 closest to the first chamfered portion 126Ca can form a white light-emitting region, and the remaining portions of the light-emitting regions of the plurality of blue light-emitting diodes 230 can form a blue colored light-emitting region. The blue light from the colored light-emitting region can illuminate the first chamfered portion 126Ca.

[0197] The phosphor 127 can be provided on the first chamfered portion 126Ca. For example, a yellow phosphor 127a can be printed on the first chamfered portion 126Ca. The yellow phosphor 127a can face the first outermost diode composed of a plurality of blue light-emitting diodes 230. Thus, the yellow phosphor 127a can absorb the blue light from the plurality of blue light-emitting diodes 230 and emit white light.

[0198] However, in one embodiment, the light irradiated onto the first chamfered portion 126Ca can be different depending on the characteristics of the protective lenses 240 and 250. For example, depending on the characteristics of the protective lens 240, the arrangement of the plurality of light-emitting regions can be formed in the opposite direction to the arrangement of the plurality of light-emitting diodes. Thus, a colored light-emitting region of the red light-emitting diode 210 located inside the light source 200 can be formed, and the red light from the colored light-emitting region can also irradiate the first chamfered portion 126Ca. A cyan phosphor can be provided on the first chamfered portion 126Ca. The cyan phosphor can absorb red light and emit white light.

[0199] In another embodiment, based on the characteristics of the protective lenses 240 and 250, a colored light-emitting region of the green light-emitting diode 220 located at the center of the light source 200 can be formed, and the green light from the colored light-emitting region can also illuminate the first chamfered portion 126Ca. A magenta phosphor can also be provided on the first chamfered portion 126Ca. The magenta phosphor can absorb green light and emit white light.

[0200] A plurality of third outer contour light sources 200xc can be arranged in the first column Co1 of the matrix pattern. For example, eight third outer contour light sources 200xc can be arranged along the y-direction in the first column Co1 of the matrix pattern. The plurality of third outer contour light sources 200xc may include red light-emitting diodes 210, green light-emitting diodes 220, and blue light-emitting diodes 230. The red light-emitting diodes 210, green light-emitting diodes 220, and blue light-emitting diodes 230 of each of the plurality of third outer contour light sources 200xc can be arranged in no particular order along the column direction (e.g., the y-direction) of the matrix pattern.

[0201] The arrangement direction of the red LED 210, green LED 220, and blue LED 230 of each of the plurality of third outer contour light sources 200xc can be parallel to the length direction of the third chamfered portion 126Cc. The red LED 210, green LED 220, and blue LED 230 of each of the plurality of third outer contour light sources 200xc can be arranged randomly along the length direction of the third chamfered portion 126Cc. For example, the red LED 210, green LED 220, and blue LED 230 can be arranged alternately along the length direction of the third chamfered portion 126Cc. Thus, red light, green light, and blue light can be combined to achieve white light, which can then illuminate the third chamfered portion 126Cc.

[0202] Therefore, the phosphor 127 does not need to be provided on the third chamfer 126Cc, which can provide a backlight unit for a display device that saves manufacturing costs.

[0203] In addition, color separation on the third chamfer 126Cc can be minimized even without the addition of an additional phosphor 127.

[0204] Will Figure 18 and Figure 16 Referring to the above, in one embodiment, a plurality of third outer contour light sources 200xc can be rotatably configured. For example, in a plan view, the plurality of third outer contour light sources 200xc can be rotated approximately 90 degrees counterclockwise. The blue LED 210, green LED 220, and red LED 230 of each of the plurality of third outer contour light sources 200xc can be arranged sequentially along the row direction (e.g., the x-direction) of the matrix pattern. However, the corner light source 200xe may not be rotated.

[0205] Each of the plurality of third outer contour light sources 200xc may include a third outer contour diode closest to the third chamfer 126Cc. For example, each of the plurality of third outer contour light sources 200xc may include a third outer contour diode closest to the third chamfer 126Cc, and the third outer contour diode may be composed of a plurality of blue light-emitting diodes 230. The plurality of third outer contour diodes may be the same color as each other.

[0206] The third outermost diode may have a colored light-emitting region. The colored light from the colored light-emitting region of the third outermost diode can illuminate the third chamfer 126Cc. For example, a portion of the light-emitting regions of the plurality of blue LEDs 230 closest to the third chamfer 126Cc can form a white light-emitting region, and the remaining portions of the light-emitting regions of the plurality of blue LEDs 230 can form a blue colored light-emitting region. The blue light from the colored light-emitting region can illuminate the third chamfer 126Cc.

[0207] The phosphor 127 can be provided on at least a portion of the third chamfer 126Cc. For example, a yellow phosphor can be printed on a portion of the third chamfer 126Cc. The yellow phosphor can be facing a plurality of third outermost diodes composed of a plurality of blue light-emitting diodes 230. Thus, the yellow phosphor 127 can absorb the blue light from the blue light-emitting diodes 230 and emit white light.

[0208] However, the phosphor 127 may not be provided at one end of the third chamfered portion 126Cc along its length. That is, the phosphor 127 may not be provided at one end of the third chamfered portion 126Cc adjacent to the corner light source 200xe. The corner light source 200xe may illuminate white light toward one end of the third chamfered portion 126Cc.

[0209] In one embodiment, the light irradiated onto the third chamfered portion 126Cc can be different depending on the characteristics of the protective lenses 240 and 250. For example, depending on the characteristics of the protective lens 240, the arrangement of the plurality of light-emitting regions can be formed in the opposite direction to the arrangement of the plurality of light-emitting diodes. Thus, a colored light-emitting region of the red light-emitting diode 210 located inside the light source 200 can be formed, and the red light from the colored light-emitting region can also irradiate the third chamfered portion 126Cc. A cyan phosphor can be provided on the third chamfered portion 126Cc. The cyan phosphor can absorb red light and emit white light.

[0210] In another embodiment, based on the characteristics of the protective lenses 240 and 250, a colored light-emitting region of the green light-emitting diode 220 located at the center of the light source 200 can be formed, and the green light from the colored light-emitting region can also illuminate the third chamfered portion 126Cc. A magenta phosphor can also be provided on the third chamfered portion 126Cc. The magenta phosphor can absorb green light and emit white light.

[0211] Will Figure 19 and Figure 11 and Figure 16 Referring to the above, in one embodiment, the corner light source 200xe can be rotated to be tilted. For example, the corner light source 200xe disposed in the first row Ro1 and the first column Co1 of the matrix pattern can be rotated approximately 45 degrees counterclockwise. The red light-emitting diode 210, green light-emitting diode 220, and blue light-emitting diode 230 of the corner light source 200xe can be arranged sequentially along directions intersecting the row and column directions of the matrix pattern.

[0212] The corner light source 200xe may include a corner diode at the corner closest to the corner of the reflector 126. For example, the corner light source 200xe may include a corner diode at the corner of the reflector 126 where the first chamfer 126Ca and the third chamfer 126Cc meet, and the corner diode may correspond to the blue light-emitting diode 230.

[0213] The corner diode can have a colored light-emitting area. This colored light-emitting area of ​​the corner diode can illuminate the corner of the reflector 126. For example, a portion of the light-emitting area of ​​the blue LED 230 closest to the corner of the reflector 126 can form a white light-emitting area, while the remaining portion of the light-emitting area of ​​the blue LED 230 can form a blue colored light-emitting area. The blue light from this colored light-emitting area can illuminate the corner of the reflector 126 where the first chamfer 126Ca and the third chamfer 126Cc meet.

[0214] The phosphor 127 can be provided on the corner of the reflective sheet 126. For example, a yellow phosphor 127a can be printed on the corner of the reflective sheet 126. The yellow phosphor 127a can face the corner diode corresponding to the blue light-emitting diode 230. Thus, the yellow phosphor 127a can absorb the blue light from the blue light-emitting diode 230 and emit white light.

[0215] However, in one embodiment, the light irradiated onto the corner of the reflector 126 can be different depending on the characteristics of the protective lenses 240 and 250. For example, depending on the characteristics of the protective lens 240, the arrangement of the plurality of light-emitting regions can be formed in the opposite direction to the arrangement of the plurality of light-emitting diodes. Thus, a colored light-emitting region of the red light-emitting diode 210 located inside the light source 200 can be formed, and the red light from the colored light-emitting region can also irradiate the corner of the reflector 126. A cyan phosphor can be provided at the corner of the reflector 126. The cyan phosphor can absorb red light and emit white light.

[0216] In another embodiment, based on the characteristics of the protective lenses 240 and 250, a colored light-emitting region of the green light-emitting diode 220 located at the center of the light source 200 can be formed, and the green light from the colored light-emitting region can also illuminate the corner of the reflector 126. A magenta phosphor can also be provided at the corner of the reflector 126. The magenta phosphor can absorb green light and emit white light.

[0217] Hereinafter, various embodiments 200a to 200g of the light source 200 of the present invention will be described. The constituent elements of the light sources 200a to 200g in each embodiment may be substantially the same as those of the aforementioned light source 200. That is, the description of the technical solution and effects of the aforementioned light source 200 can also be applied to the plurality of light sources 200a to 200g described below. For example, the light-emitting area of ​​the red light-emitting diode 210 may be larger than the light-emitting areas of the green light-emitting diode 220 and the blue light-emitting diode 230. Furthermore, each of the plurality of light sources 200a to 200g may have a substantially square shape. Therefore, for ease of explanation, the description will focus on the differences from the aforementioned light source 200.

[0218] Reference Figure 20 In one embodiment, the red LED 210, green LED 220, and blue LED 230 of the light source 200a can be separated from each other. For example, the red LED 210, green LED 220, and blue LED 230 can be separated from each other along the direction of arrangement (e.g., the y-direction).

[0219] The length L1 of the red LED 210, green LED 220, and blue LED 230 can be further extended to increase the spacing between them. Thus, the light source 200a can maintain a substantially square shape. That is, the length L1 of the light source 200a can be substantially the same as the width L2 of the light source 200a.

[0220] This improves the heat dissipation performance of the light source 200a. For example, the heat generated by one of the red LED 210, green LED 220, and blue LED 230 may be difficult to transfer to the other one of the three LEDs.

[0221] Reference Figure 21 In one embodiment, the red light-emitting diode 210, blue light-emitting diode 230, and green light-emitting diode 220 of the light source 200b can be arranged sequentially. The red light-emitting diode 210 and green light-emitting diode 220 can be located at the edges of the arrangement. The blue light-emitting diode 230 can be located between the red light-emitting diode 210 and the green light-emitting diode 220. For example, the red light-emitting diode 210, blue light-emitting diode 230, and green light-emitting diode 220 can be arranged sequentially along the y-direction. Thus, the plurality of colored light-emitting regions of the light source 200b can be different. For example, the light source 200b can have a first red colored light-emitting region and a second green colored light-emitting region.

[0222] However, in one embodiment, depending on the characteristics of the protective lenses 240 and 250, the light source 200b may also have a blue colored light-emitting area.

[0223] Reference Figure 22 In one embodiment, the green LED 220, red LED 210, and blue LED 230 of the light source 200c can be arranged sequentially. The green LED 220 and blue LED 230 can be located at the edges of the arrangement. The red LED 210 can be located between the green LED 220 and the blue LED 230. For example, the green LED 220, red LED 210, and blue LED 230 can be arranged sequentially along the y-direction. Thus, the colored light-emitting regions of the light source 200c can be different. For example, the light source 200c can have a first green colored light-emitting region and a second blue colored light-emitting region.

[0224] However, in one embodiment, depending on the characteristics of the protective lenses 240 and 250, the light source 200c may also have a red colored light-emitting area.

[0225] Reference Figure 23 In one embodiment, the red light-emitting diode 210 may include a first red light-emitting diode 211 and a second red light-emitting diode 212. The first red light-emitting diode 211 and the second red light-emitting diode 212 may extend elongatedly. For example, the first red light-emitting diode 211 and the second red light-emitting diode 212 may extend elongatedly along the length direction of the light source 200d.

[0226] The length L1 of the first red LED 211 and the second red LED 212 can be substantially the same as each other. For example, the length L1 of the first red LED 211 and the second red LED 212 can be substantially the same as the length L1 of the light source 200d.

[0227] The widths of the first red LED 211 and the second red LED 212 can be substantially the same as each other. The widths of the first red LED 211 and the second red LED 212 can be measured in the width direction (e.g., the y-direction) of the light source 200d.

[0228] The plurality of light-emitting areas of the first red LED 211 and the second red LED 212 can be substantially the same as each other. For example, the length L1 and width of the first red LED 211 and the second red LED 212 are substantially the same as each other, therefore the light-emitting areas of the first red LED 211 and the second red LED 212 can be substantially the same as each other.

[0229] The first red LED 211 and the second red LED 212 can be separated from each other. The first red LED 211 and the second red LED 212 can be separated from each other along the direction of arrangement (e.g., the y-direction). For example, the first red LED 211 and the second red LED 212 can be separated from each other along the width direction intersecting the length direction.

[0230] This improves the heat dissipation performance of the red LED 210. For example, since the first red LED 211 and the second red LED 212 are separated from each other, the heat concentration generated by the first red LED 211 and the second red LED 212 can be minimized.

[0231] In addition, it can minimize the performance degradation of the red light-emitting diode 210 caused by heat.

[0232] In addition, it can improve the white light realization performance of the 200d light source.

[0233] Alternatively, a backlight unit 120 for a display device that can improve color performance and / or brightness can be provided.

[0234] Green LED 220 and blue LED 230 can be provided between the first red LED 211 and the second red LED 212. For example, they can be arranged along the y-direction in the order of the first red LED 211, green LED 220, blue LED 230, and second red LED 212.

[0235] The light-emitting area of ​​the first red LED 211 or the second red LED 212 can be substantially the same as the light-emitting area of ​​the green LED 220 or the blue LED 230. The sum of the light-emitting areas of the first red LED 211 and the second red LED 212 can be greater than the light-emitting area of ​​the green LED 220 or the blue LED 230. For example, the sum of the light-emitting areas of the first red LED 211 and the second red LED 212 can be approximately 2.0 times greater than the light-emitting area of ​​the green LED 220 or the blue LED 230.

[0236] Reference Figure 24 In one embodiment, the red light-emitting diode 210 may extend elongatedly. For example, the red light-emitting diode 210 may have a rectangular shape. The length L1 of the red light-emitting diode 210 may correspond to the length L1 of the light source 200e. The width of the red light-emitting diode 210 may correspond to half the width L2 of the light source 200e.

[0237] The green LED 220 and the blue LED 230 can have a substantially square shape. For example, the light-emitting area of ​​the green LED 220 and the blue LED 230 can have a substantially square shape.

[0238] The light-emitting areas of the green LED 220 and the blue LED 230 can be substantially the same. The light-emitting areas of the green LED 220 and the blue LED 230 can be smaller than the light-emitting area of ​​the red LED 210. For example, the light-emitting area of ​​the red LED 210 can be approximately twice the light-emitting area of ​​either the green LED 220 or the blue LED 230. The sum of the light-emitting areas of the green LED 220 and the blue LED 230 can be substantially the same as the light-emitting area of ​​the red LED 210.

[0239] The red LED 210, blue LED 230, and green LED 220 can be arranged sequentially. For example, the red LED 210, blue LED 230, and green LED 220 can be arranged sequentially in a clockwise direction.

[0240] Green LED 220 and blue LED 230 may be adjacent to red LED 210. Green LED 220 and blue LED 230 may be arranged along the length of light source 200e. Light source 200e may have a substantially square shape. For example, red LED 210, green LED 220, and blue LED 230 may be arranged within a substantially square frame.

[0241] The red LED 210, green LED 220, and blue LED 230 can be in contact with each other. For example, the red LED 210, green LED 220, and blue LED 230 can be arranged without gaps. The adjacent sides of the red LED 210, green LED 220, and blue LED 230 can overlap. The light-emitting surfaces of the red LED 210, green LED 220, and blue LED 230 can form a single light-emitting surface.

[0242] Figure 25 yes Figure 11 Enlarged views of the SA and SB regions.

[0243] Will Figure 25 and Figure 26 and Figure 11 Referring together, a plurality of light sources 200 can be mounted on a third substrate 122c. The third substrate 122c can be provided below the reflector 126. The plurality of light sources 200 can be arranged in a matrix pattern on the third substrate 122c. For example, the plurality of light sources 200 can be arranged on the third substrate 122c in rows 1 through 8: Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2.

[0244] A plurality of light sources 200 may also be mounted on a fourth substrate 122d. The fourth substrate 122d may be located below the reflector 126. The plurality of light sources 200 may be arranged in a matrix pattern on the fourth substrate 122d. For example, the plurality of light sources 200 may be arranged on the fourth substrate 122d in rows Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2 from the first to the eighth row.

[0245] The fourth substrate 122d can be substantially the same as the third substrate 122c. For example, the structure of the fourth substrate 122d can be substantially the same as the structure of the third substrate 122c. The plurality of light sources 200 of the fourth substrate 122d can be substantially the same as the plurality of light sources 200 of the third substrate 122c. For example, the plurality of identical light sources 200 can be mounted on the third substrate 122c and the fourth substrate 122d.

[0246] The configuration direction of the fourth substrate 122d may differ from that of the third substrate 122c. For example, the fourth substrate 122d may be configured with its orientation rotated approximately 180 degrees relative to the third substrate 122c. For example, the third substrate 122c may have a first to eighth row of Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2 arranged in opposite directions along the y-direction, and the fourth substrate 122d may have a first to eighth row of Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2 arranged along the y-direction. The first row Ra1 of the third substrate 122c and the eighth row Ra2 of the fourth substrate 122d may form the first row Ro1 of a matrix pattern.

[0247] A portion of the light emitted from the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca. Colored light from the plurality of colored emitting regions of the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca. The colored emitting regions of the third substrate 122c and the fourth substrate 122d that illuminate the first chamfered portion 126Ca can be different. For example, the fourth substrate 122d can be rotated approximately 180 degrees relative to the third substrate 122c, the plurality of first outer contour diodes of the third substrate 122c can be composed of a plurality of blue light-emitting diodes 230, and the plurality of first outer contour diodes of the fourth substrate 122d can be composed of a plurality of red light-emitting diodes 210.

[0248] A portion of the first chamfered portion 126Ca may face the third substrate 122c. Another portion of the first chamfered portion 126Ca may face the fourth substrate 122d. The color of the light irradiated onto the portion of the first chamfered portion 126Ca facing the third substrate 122c may be different from the color of the light irradiated onto the other portion of the first chamfered portion 126Ca facing the fourth substrate 122d. For example, blue light from the colored emitting regions of the plurality of first outline light sources 200xa of the third substrate 122c may irradiate a portion of the first chamfered portion 126Ca, and red light from the colored emitting regions of the plurality of first outline light sources 200xa of the fourth substrate 122d may irradiate the other portion of the first chamfered portion 126Ca.

[0249] A phosphor 127 may be provided on the first chamfered portion 126Ca. For example, a yellow phosphor 127a may be provided on a portion of the first chamfered portion 126Ca. For example, a cyan phosphor 127b may be provided on another portion of the first chamfered portion 126Ca.

[0250] However, in one embodiment, the light irradiated onto the first chamfered portion 126Ca can be different depending on the characteristics of the protective lenses 240 and 250. For example, depending on the characteristics of the protective lens 240, a portion of the luminous region of the red light-emitting diode 210 or the blue light-emitting diode 230 located inside each of the plurality of first outer contour light sources 200xa can form a colored luminous region, and red or blue light can also irradiate the first chamfered portion 126Ca. A cyan phosphor can be provided on a portion of the first chamfered portion 126Ca, and a yellow phosphor can also be provided on another portion of the first chamfered portion 126Ca.

[0251] In another embodiment, based on the characteristics of the protective lenses 240 and 250, a colored light-emitting region of a green light-emitting diode 220 located at the center of each of the plurality of first outer contour light sources 200xa can be formed, and the green light from the colored light-emitting region can also illuminate the first chamfered portion 126Ca. A magenta phosphor can be provided on one part and another part of the first chamfered portion 126Ca.

[0252] Figure 27 yes Figure 11 Enlarged views of the SA and SC regions.

[0253] Will Figure 27 and Figure 28 and Figure 11 Similarly, a plurality of light sources 200 can also be mounted on an eighth substrate 122h. The eighth substrate 122h can be provided below the reflector 126. The plurality of light sources 200 can be arranged in a matrix pattern on the eighth substrate 122h. For example, the plurality of light sources 200 can be arranged on the eighth substrate 122h in rows Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2 from the first to the eighth row.

[0254] The eighth substrate 122h can be substantially the same as the third substrate 122c. For example, the structure of the eighth substrate 122h can be substantially the same as the structure of the third substrate 122c. The plurality of light sources 200 of the eighth substrate 122h can be substantially the same as the plurality of light sources 200 of the third substrate 122c. For example, a plurality of light sources 200 having the same structure can be mounted on the third substrate 122c and the eighth substrate 122h.

[0255] The configuration direction of the eighth substrate 122h can be the same as that of the third substrate 122c. For example, the third substrate 122c and the eighth substrate 122h can have first to eighth rows Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2 arranged in opposite directions along the y-direction. The first row Ra1 of the third substrate 122c can form the first row Ro1 of the matrix pattern, and the eighth row Ra2 of the eighth substrate 122h can form the last row RoN of the matrix pattern.

[0256] A portion of the light emitted from the plurality of first outer contour light sources 200xa on the third substrate 122c can illuminate the first chamfered portion 126Ca. Colored light from the plurality of colored emitting regions of the plurality of first outer contour light sources 200xa on the third substrate 122c can illuminate the first chamfered portion 126Ca. For example, the plurality of first outermost contour diodes on the third substrate 122c can be composed of a plurality of blue light-emitting diodes 230, and a portion of the emitting region of the blue light-emitting diodes 230 can form a colored emitting region. Blue light can illuminate the first chamfered portion 126Ca.

[0257] A portion of the light emitted from the plurality of light sources 200 arranged in the last row of RoN on the eighth substrate 122h can illuminate the second chamfered portion 126Cb. Colored light from the plurality of colored light-emitting regions of the plurality of light sources 200 arranged in the last row of RoN on the eighth substrate 122h can illuminate the second chamfered portion 126Cb. For example, the plurality of second outermost diodes on the eighth substrate 122h can be composed of a plurality of red light-emitting diodes 210, and a portion of the light-emitting region of the red light-emitting diodes 210 can form a colored light-emitting region. Red light can illuminate the second chamfered portion 126Cb.

[0258] A phosphor 127 may be provided on the first chamfered portion 126Ca. For example, a yellow phosphor 127a may be provided on the first chamfered portion 126Ca.

[0259] The phosphor 127 can be provided on the second chamfer 126Cb. For example, the cyan phosphor 127b can be provided on the second chamfer 126Cb.

[0260] However, in one embodiment, the light irradiated onto the first chamfered portion 126Ca can be different depending on the characteristics of the protective lenses 240 and 250. For example, depending on the characteristics of the protective lens 240, a colored light-emitting region of a red light-emitting diode 210 located inside each of the plurality of first outer contour light sources 200xa can be formed, and the red light from the colored light-emitting region can also irradiate the first chamfered portion 126Ca. A cyan phosphor can be provided on a portion of the first chamfered portion 126Ca. The cyan phosphor can absorb red light and emit white light.

[0261] Similarly, depending on the characteristics of the protective lenses 240 and 250, the light irradiating the second chamfered portion 126Cb can be different. For example, depending on the characteristics of the protective lens 240, a colored light-emitting region of the blue light-emitting diode 230 located inside each of the plurality of second outer contour light sources 200xb can be formed, and the blue light from the colored light-emitting region can also irradiate the second chamfered portion 126Cb. A yellow phosphor can be provided on a portion of the second chamfered portion 126Cb. The yellow phosphor can absorb blue light and emit white light.

[0262] In another embodiment, based on the characteristics of the protective lenses 240 and 250, a colored light-emitting region of a green light-emitting diode 220 located at the center of each of the plurality of first outer contour light sources 200xa can be formed, and the green light from the colored light-emitting region can also illuminate the first chamfered portion 126Ca. A magenta phosphor can be provided on one part and another part of the first chamfered portion 126Ca. The magenta phosphor can absorb green light and emit white light.

[0263] Similarly, based on the characteristics of the protective lenses 240 and 250, colored light-emitting regions of green LEDs 220 located at the center of each of the plurality of second outer contour light sources 200xb can be formed, and the green light from these colored light-emitting regions can also illuminate the second chamfered portion 126Cb. A magenta phosphor can be provided on one part and another part of the second chamfered portion 126Cb. The magenta phosphor can absorb green light and emit white light.

[0264] Reference Figure 29 and Figure 30 In one embodiment, the configuration direction of the fourth substrate 122d may be the same as that of the third substrate 122c. For example, the third substrate 122c and the fourth substrate 122d may have first to eighth rows Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2 arranged in opposite directions along the y-direction. The first row Ra1 of the third substrate 122c and the first row Ra1 of the fourth substrate 122d may form the first row Ro1 of a matrix pattern.

[0265] A portion of the light emitted from the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca. A portion of the light-emitting region of the first outermost contour diode of each of the plurality of first outer contour light sources 200xa can form a colored light-emitting region, and the colored light from this region can illuminate the first chamfered portion 126Ca. For example, the plurality of first outermost contour diodes of the third substrate 122c and the fourth substrate 122d can be composed of a plurality of blue light-emitting diodes 230, and a portion of the light-emitting region of the blue light-emitting diodes 230 can form a colored light-emitting region. Blue light can then illuminate the first chamfered portion 126Ca.

[0266] Therefore, light of the same color can shine on the first chamfer 126Ca.

[0267] A phosphor 127 may be provided on the first chamfered portion 126Ca. For example, a yellow phosphor 127a may be provided on the first chamfered portion 126Ca.

[0268] Therefore, the types of phosphors 127 provided on the first chamfered portion 126Ca can be standardized.

[0269] Alternatively, a backlight unit for a display device can be provided that saves on manufacturing costs.

[0270] However, in one embodiment, the light irradiated onto the first chamfered portion 126Ca can be different depending on the characteristics of the protective lenses 240 and 250. For example, depending on the characteristics of the protective lens 240, a portion of the luminous region of the red light-emitting diode 210 located inside each of the plurality of first outer contour light sources 200xa can form a colored luminous region, and red light can also irradiate the first chamfered portion 126Ca. A cyan phosphor can be provided on the first chamfered portion 126Ca. The cyan phosphor can absorb red light and emit white light.

[0271] In another embodiment, based on the characteristics of the protective lenses 240 and 250, a colored light-emitting region of a green light-emitting diode 220 located at the center of each of the plurality of first outer contour light sources 200xa can be formed, and the green light from the colored light-emitting region can also illuminate the first chamfered portion 126Ca. A magenta phosphor can be provided on the first chamfered portion 126Ca. The magenta phosphor can absorb green light and emit white light.

[0272] Will Figure 31 and Figure 29 Referring to the above, in one embodiment, the plurality of light sources 200d of the fourth substrate 122d may differ from the plurality of light sources 200 of the third substrate 122c. For example, the structure of the plurality of light sources 200d of the fourth substrate 122d may differ from the structure of the plurality of light sources 200 of the third substrate 122c. The arrangement of the plurality of diodes in each of the plurality of light sources 200d of the fourth substrate 122d may differ from the arrangement of the plurality of diodes in each of the plurality of light sources 200 of the third substrate 122c. For example, the light sources 200d of the third substrate 122c may include a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230 arranged sequentially along the y-direction, but the light sources 200d of the fourth substrate 122d may include a green light-emitting diode 220, a red light-emitting diode 210, and a blue light-emitting diode 230 arranged sequentially along the y-direction.

[0273] The first outermost diode of the fourth substrate 122d can be the same as the first outermost diode of the third substrate 122c. For example, a plurality of the first outermost diodes of the third substrate 122c and the fourth substrate 122d can be composed of a plurality of blue light-emitting diodes 230. Thus, the third substrate 122c and the fourth substrate 122d can form a blue colored light-emitting region, and blue light can illuminate the first chamfered portion 126Ca.

[0274] Therefore, light of the same color can shine on the first chamfer 126Ca.

[0275] A phosphor 127 may be provided on the first chamfered portion 126Ca. For example, a yellow phosphor 127a may be provided on the first chamfered portion 126Ca.

[0276] Therefore, the types of phosphors 127 provided on the first chamfered portion 126Ca can be standardized.

[0277] Alternatively, a backlight unit for a display device can be provided that saves on manufacturing costs.

[0278] Reference Figure 32 and Figure 33 In one embodiment, the configuration direction of the eighth substrate 122h may differ from that of the third substrate 122c. For example, the eighth substrate 122h may be configured with its configuration rotated approximately 180 degrees relative to the third substrate 122c. For example, the third substrate 122c may have first to eighth rows Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2 arranged in opposite directions along the y-direction, and the eighth substrate 122h may have first to eighth rows Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2 arranged along the y-direction. A plurality of light sources 200 in the first row Ra1 of the eighth substrate 122h may be configured with their configuration rotated approximately 180 degrees relative to the plurality of light sources 200 in the first row Ra1 of the third substrate 122c. The first row Ra1 of the third substrate 122c may form the first row Ro1 of a matrix pattern, and the first row Ra1 of the eighth substrate 122h may form the last row RoN of a matrix pattern.

[0279] A portion of the light emitted from the plurality of light sources 200 arranged in the first row Ra1 of the third substrate 122c can illuminate the first chamfered portion 126Ca. Colored light from the plurality of colored emitting regions of the plurality of first outer contour light sources 200xa of the third substrate 122c can illuminate the first chamfered portion 126Ca. For example, the plurality of first outermost contour diodes of the third substrate 122c can be composed of a plurality of blue light-emitting diodes 230, and a portion of the emitting region of the blue light-emitting diodes 230 can form a blue colored emitting region. Blue light can illuminate the first chamfered portion 126Ca.

[0280] A portion of the light emitted from the plurality of light sources 200 arranged in the first row Ra1 of the eighth substrate 122h can illuminate the second chamfered portion 126Cb. Colored light from the plurality of colored emitting regions of the plurality of light sources 200 arranged in the first row Ra1 of the eighth substrate 122h can illuminate the second chamfered portion 126Cb. For example, the plurality of second outermost diodes of the eighth substrate 122h can be composed of a plurality of blue light-emitting diodes 230, and a portion of the emitting region of the blue light-emitting diodes 230 can form a blue colored emitting region. Blue light can illuminate the second chamfered portion 126Cb.

[0281] Therefore, light of the same color can be directed to the first chamfered portion 126Ca and the second chamfered portion 126Cb respectively.

[0282] The phosphor 127 can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. For example, a yellow phosphor 127a can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. The yellow phosphor 127 can absorb blue light and emit white light.

[0283] Therefore, the types of phosphors 127 provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb can be unified.

[0284] Alternatively, a backlight unit for a display device can be provided that saves on manufacturing costs.

[0285] However, in one embodiment, depending on the characteristics of the protective lenses 240 and 250, the light irradiating the first chamfered portion 126Ca and the second chamfered portion 126Cb can be different. For example, depending on the characteristics of the protective lens 240, a colored light-emitting region of a red light-emitting diode 210 located inside the first outer contour light source 200xa and the second outer contour light source 200xb can be formed, and the red light from the colored light-emitting region can also irradiate the first chamfered portion 126Ca and the second chamfered portion 126Cb. A cyan phosphor can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. The cyan phosphor can absorb red light and emit white light.

[0286] In another embodiment, based on the characteristics of the protective lenses 240 and 250, a colored light-emitting region of the green light-emitting diode 220 located at the center of each of the first outer contour light source 200xa and the second outer contour light source 200xb can be formed. The green light from the colored light-emitting region can also illuminate the first chamfered portion 126Ca and the second chamfered portion 126Cb. A magenta phosphor can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. The magenta phosphor can absorb green light and emit white light.

[0287] Will Figure 34 and Figure 32 Referring to the above, in one embodiment, the configuration direction of the eighth substrate 122h may be different from that of the third substrate 122c. For example, the eighth substrate 122h may be configured with its configuration rotated approximately 180 degrees relative to the third substrate 122c. For example, the third substrate 122c may have a first to an eighth row of Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2 arranged in opposite directions along the y-direction, and the eighth substrate 122h may have a first to an eighth row of Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2 arranged along the y-direction.

[0288] The plurality of light sources 200b in the first row Ra1 of the eighth substrate 122h can be rotated approximately 180 degrees relative to the plurality of light sources 200b in the first row Ra1 of the third substrate 122c. The first row Ra1 of the third substrate 122c can form the first row Ro1 of the matrix pattern, and the first row Ra1 of the eighth substrate 122h can form the last row RoN of the matrix pattern.

[0289] A portion of the light emitted from the plurality of light sources 200b arranged in the first row Ra1 of the third substrate 122c can illuminate the first chamfered portion 126Ca. Colored light from the plurality of colored emitting regions of the plurality of first outer contour light sources 200xa of the third substrate 122c can illuminate the first chamfered portion 126Ca. For example, the plurality of first outermost contour diodes of the third substrate 122c can be composed of a plurality of green light-emitting diodes 220, and a portion of the plurality of emitting regions of the plurality of green light-emitting diodes 220 can form a colored emitting region. Green light can then illuminate the first chamfered portion 126Ca.

[0290] A portion of the light emitted from the plurality of light sources 200b arranged in the first row Ra1 of the eighth substrate 122h can illuminate the second chamfered portion 126Cb. Colored light from the plurality of colored emitting regions of the plurality of light sources 200b arranged in the first row Ra1 of the eighth substrate 122h can illuminate the second chamfered portion 126Cb. For example, the plurality of second outermost diodes of the eighth substrate 122h can be composed of a plurality of green light-emitting diodes 220, and a portion of the emitting regions of the plurality of green light-emitting diodes 220 can form a colored emitting region. Green light can illuminate the second chamfered portion 126Cb.

[0291] Therefore, light of the same color can be directed to the first chamfered portion 126Ca and the second chamfered portion 126Cb respectively.

[0292] The phosphor 127 can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. For example, a magenta phosphor 127c can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. The magenta phosphor 127c can absorb green light and emit white light.

[0293] Therefore, the types of phosphors 127 provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb can be unified.

[0294] Alternatively, a backlight unit for a display device can be provided that saves on manufacturing costs.

[0295] However, in one embodiment, depending on the characteristics of the protective lenses 240 and 250, the light irradiating the first chamfered portion 126Ca and the second chamfered portion 126Cb can be different. For example, depending on the characteristics of the protective lens 240, a colored light-emitting region of a red light-emitting diode 210 located inside the first outer contour light source 200xa and the second outer contour light source 200xb can be formed, and the red light from the colored light-emitting region can also irradiate the first chamfered portion 126Ca and the second chamfered portion 126Cb. A cyan phosphor can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. The cyan phosphor can absorb red light and emit white light.

[0296] In another embodiment, based on the characteristics of the protective lenses 240 and 250, a colored light-emitting region of the green light-emitting diode 220 located at the center of each of the first outer contour light source 200xa and the second outer contour light source 200xb can be formed. The green light from the colored light-emitting region can also illuminate the first chamfered portion 126Ca and the second chamfered portion 126Cb. A magenta phosphor can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. The magenta phosphor can absorb green light and emit white light.

[0297] Will Figure 35 and Figure 32 Referring to the above, in one embodiment, the configuration direction of the eighth substrate 122h may be different from that of the third substrate 122c. For example, the eighth substrate 122h may be configured with its configuration rotated approximately 180 degrees relative to the third substrate 122c. For example, the third substrate 122c may have a first to an eighth row of Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2 arranged in opposite directions along the y-direction, and the eighth substrate 122h may have a first to an eighth row of Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2 arranged along the y-direction.

[0298] The plurality of light sources 200b in the first row Ra1 of the eighth substrate 122h can be rotated approximately 180 degrees relative to the plurality of light sources 200 in the first row Ra1 of the third substrate 122c. The first row Ra1 of the third substrate 122c can form the first row Ro1 of the matrix pattern, and the first row Ra1 of the eighth substrate 122h can form the last row RoN of the matrix pattern.

[0299] A portion of the light emitted from the plurality of light sources 200b arranged in the first row Ra1 of the third substrate 122c can illuminate the first chamfered portion 126Ca. Colored light from the plurality of colored emitting regions of the plurality of first outer contour light sources 200xa of the third substrate 122c can illuminate the first chamfered portion 126Ca. For example, the plurality of first outermost contour diodes of the third substrate 122c can be composed of a plurality of red light-emitting diodes 210, and a portion of the emitting region of the red light-emitting diodes 210 can form a colored emitting region. Red light can then illuminate the first chamfered portion 126Ca.

[0300] A portion of the light emitted from the plurality of light sources 200b arranged in the first row Ra1 of the eighth substrate 122h can illuminate the second chamfered portion 126Cb. Colored light from the plurality of colored light-emitting regions of the plurality of light sources 200b arranged in the first row Ra1 of the eighth substrate 122h can illuminate the second chamfered portion 126Cb. For example, the plurality of second outermost diodes of the eighth substrate 122h can be composed of a plurality of red light-emitting diodes 210, and a portion of the light-emitting region of the red light-emitting diode 210 can form a colored light-emitting region. Red light can illuminate the second chamfered portion 126Cb.

[0301] Therefore, light of the same color can be directed to the first chamfered portion 126Ca and the second chamfered portion 126Cb respectively.

[0302] The phosphor 127 can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. For example, a cyan phosphor 127b can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. The cyan phosphor 127b can absorb red light and emit white light.

[0303] Therefore, the types of phosphors 127 provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb can be unified.

[0304] Alternatively, a backlight unit for a display device can be provided that saves on manufacturing costs.

[0305] However, in one embodiment, the light irradiating the first chamfered portion 126Ca and the second chamfered portion 126Cb can be different depending on the characteristics of the protective lenses 240 and 250. For example, depending on the characteristics of the protective lens 240, a colored light-emitting region of the green light-emitting diode 220 located inside the first outer contour light source 200xa and the second outer contour light source 200xb can be formed, and the green light from the colored light-emitting region can also irradiate the first chamfered portion 126Ca and the second chamfered portion 126Cb. A magenta phosphor can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. The magenta phosphor can absorb green light and emit white light.

[0306] In another embodiment, based on the characteristics of the protective lenses 240 and 250, a colored light-emitting region of the blue light-emitting diode 230 can be formed at the center of each of the first outer contour light source 200xa and the second outer contour light source 200xb. The blue light from the colored light-emitting region can also illuminate the first chamfered portion 126Ca and the second chamfered portion 126Cb. A yellow phosphor can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. The yellow phosphor can absorb blue light and emit white light.

[0307] Will Figure 36 and Figure 32 Referring to the above, in one embodiment, the configuration direction of the eighth substrate 122h may be different from that of the third substrate 122c. For example, the eighth substrate 122h may be configured with its configuration rotated approximately 180 degrees relative to the third substrate 122c. For example, the third substrate 122c may have a first to an eighth row of Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2 arranged in opposite directions along the y-direction, and the eighth substrate 122h may have a first to an eighth row of Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2 arranged along the y-direction.

[0308] The plurality of light sources 200d in the first row Ra1 of the eighth substrate 122h can be rotated approximately 180 degrees relative to the plurality of light sources 200d in the first row Ra1 of the third substrate 122c. The first row Ra1 of the third substrate 122c can form the first row Ro1 of the matrix pattern, and the first row Ra1 of the eighth substrate 122h can form the last row RoN of the matrix pattern.

[0309] A portion of the light emitted from the plurality of light sources 200d arranged in the first row Ra1 of the third substrate 122c can illuminate the first chamfered portion 126Ca. Colored light from the plurality of colored emitting regions of the plurality of first outer contour light sources 200xa of the third substrate 122c can illuminate the first chamfered portion 126Ca. For example, the plurality of first outermost contour diodes of the third substrate 122c can be composed of a plurality of first red light-emitting diodes 211, and a portion of the emitting region of the first red light-emitting diode 211 can form a colored emitting region. Red light can then illuminate the first chamfered portion 126Ca.

[0310] A portion of the light emitted from the plurality of light sources 200d arranged in the first row Ra1 of the eighth substrate 122h can illuminate the second chamfered portion 126Cb. Colored light from the plurality of colored emitting regions of the plurality of light sources 200d arranged in the first row Ra1 of the eighth substrate 122h can illuminate the second chamfered portion 126Cb. For example, the plurality of second outermost diodes of the eighth substrate 122h can be composed of a plurality of first red light-emitting diodes 211, and a portion of the emitting region of the first red light-emitting diodes 211 can form a colored emitting region. Red light can illuminate the second chamfered portion 126Cb.

[0311] Therefore, light of the same color can be directed to the first chamfered portion 126Ca and the second chamfered portion 126Cb respectively.

[0312] The phosphor 127 can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. For example, a cyan phosphor 127b can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. The cyan phosphor 127b can absorb red light and emit white light.

[0313] Therefore, the types of phosphors 127 provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb can be unified.

[0314] Alternatively, a backlight unit for a display device can be provided that saves on manufacturing costs.

[0315] However, in one embodiment, based on the characteristics of the protective lenses 240 and 250, a portion of the light-emitting region of the blue light-emitting diode 230 or the green light-emitting diode 220 located at the center of each of the first outer contour light source 200xa and the second outer contour light source 200xb can form a colored light-emitting region, and blue or green light can also irradiate the first chamfered portion 126Ca. A yellow phosphor or a magenta phosphor can be provided on the first chamfered portion 126Ca. The yellow phosphor or the magenta phosphor can absorb blue or green light and emit white light.

[0316] Reference Figure 37 and Figure 38 In one embodiment, the configuration direction of the eighth substrate 122h may be the same as that of the third substrate 122c. For example, the third substrate 122c and the eighth substrate 122h may have first to eighth rows Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2 arranged in opposite directions along the y-direction. The first row Ra1 of the third substrate 122c may form the first row Ro1 of the matrix pattern, and the eighth row Ra2 of the eighth substrate 122h may form the last row RoN of the matrix pattern.

[0317] The plurality of light sources 200c of the eighth substrate 122h may differ from the plurality of light sources 200 of the third substrate 122c. For example, the structure of the plurality of light sources 200c of the eighth substrate 122h may differ from the structure of the plurality of light sources 200 of the third substrate 122c. The arrangement of the plurality of diodes in each of the plurality of light sources 200c of the eighth substrate 122h may differ from the arrangement of the plurality of diodes in each of the plurality of light sources 200 of the third substrate 122c. For example, the light sources 200 of the third substrate 122c may include red light-emitting diodes 210, green light-emitting diodes 220, and blue light-emitting diodes 230 arranged sequentially along the y-direction, but the light sources 200c of the eighth substrate 122h may include blue light-emitting diodes 230, red light-emitting diodes 210, and green light-emitting diodes 220 arranged sequentially along the y-direction.

[0318] The second outermost diode of the eighth substrate 122h can be the same as the first outermost diode of the third substrate 122c. For example, the first outermost diode of the third substrate 122c and the second outermost diode of the eighth substrate 122h can be composed of a plurality of blue light-emitting diodes 230.

[0319] A portion of the light emitted from the plurality of light sources 200 arranged in the first row Ra1 of the third substrate 122c can illuminate the first chamfered portion 126Ca. Colored light from the plurality of colored emitting regions of the plurality of first outer contour light sources 200xa of the third substrate 122c can illuminate the first chamfered portion 126Ca. For example, the plurality of first outermost contour diodes of the third substrate 122c can be composed of a plurality of blue light-emitting diodes 230, and a portion of the emitting region of the blue light-emitting diodes 230 can form a colored emitting region. Blue light can then illuminate the first chamfered portion 126Ca.

[0320] A portion of the light emitted from the plurality of light sources 200c arranged in the eighth row Ra2 of the eighth substrate 122h can illuminate the second chamfered portion 126Cb. Colored light from the plurality of colored light-emitting regions of the plurality of light sources 200c arranged in the eighth row Ra2 of the eighth substrate 122h can illuminate the second chamfered portion 126Cb. For example, the plurality of second outermost diodes of the eighth substrate 122h can be composed of a plurality of blue light-emitting diodes 230, and a portion of the light-emitting region of the blue light-emitting diodes 230 can form a colored light-emitting region. Blue light can illuminate the second chamfered portion 126Cb.

[0321] Therefore, light of the same color can be directed to the first chamfered portion 126Ca and the second chamfered portion 126Cb respectively.

[0322] The phosphor 127 can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. For example, the yellow phosphor 127a can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. The yellow phosphor 127a can absorb blue light and emit white light.

[0323] Therefore, the types of phosphors 127 provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb can be unified.

[0324] Alternatively, a backlight unit for a display device can be provided that saves on manufacturing costs.

[0325] Will Figure 39 and Figure 37 Referring together, in one embodiment, the configuration direction of the eighth substrate 122h may be the same as that of the third substrate 122c. For example, the third substrate 122c and the eighth substrate 122h may have first to eighth rows Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2 arranged in opposite directions along the y-direction. The first row Ra1 of the third substrate 122c may form the first row Ro1 of the matrix pattern, and the eighth row Ra2 of the eighth substrate 122h may form the last row RoN of the matrix pattern.

[0326] The plurality of light sources 200c of the eighth substrate 122h may differ from the plurality of light sources 200b of the third substrate 122c. For example, the structure of the plurality of light sources 200c of the eighth substrate 122h may differ from the structure of the plurality of light sources 200b of the third substrate 122c. The arrangement of the plurality of diodes in each of the plurality of light sources 200c of the eighth substrate 122h may differ from the arrangement of the plurality of diodes in each of the plurality of light sources 200b of the third substrate 122c. For example, the light sources 200b of the third substrate 122c may include a red light-emitting diode 210, a blue light-emitting diode 230, and a green light-emitting diode 220 arranged sequentially along the y-direction, but the light sources 200c of the eighth substrate 122h may include a green light-emitting diode 220, a red light-emitting diode 210, and a blue light-emitting diode 230 arranged sequentially along the y-direction.

[0327] The second outermost diode of the eighth substrate 122h can be the same as the first outermost diode of the third substrate 122c. For example, a plurality of first outermost diodes of the third substrate 122c and a plurality of second outermost diodes of the eighth substrate 122h can be composed of a plurality of green light-emitting diodes 220.

[0328] A portion of the light emitted from the plurality of light sources 200b arranged in the first row Ra1 of the third substrate 122c can illuminate the first chamfered portion 126Ca. Colored light from the plurality of colored emitting regions of the plurality of first outer contour light sources 200xa of the third substrate 122c can illuminate the first chamfered portion 126Ca. For example, the plurality of first outermost contour diodes of the third substrate 122c can be composed of a plurality of green light-emitting diodes 220, and a portion of the emitting region of the green light-emitting diode 220 can form a colored emitting region. Green light can then illuminate the first chamfered portion 126Ca.

[0329] A portion of the light emitted from the plurality of light sources 200c arranged in the eighth row Ra2 of the eighth substrate 122h can illuminate the second chamfered portion 126Cb. Colored light from the plurality of colored light-emitting regions of the plurality of light sources 200c arranged in the eighth row Ra2 of the eighth substrate 122h can illuminate the second chamfered portion 126Cb. For example, the plurality of second outermost diodes of the eighth substrate 122h can be composed of a plurality of green light-emitting diodes 220, and a portion of the light-emitting region of the green light-emitting diode 220 can form a colored light-emitting region. Green light can illuminate the second chamfered portion 126Cb.

[0330] Therefore, light of the same color can be directed to the first chamfered portion 126Ca and the second chamfered portion 126Cb respectively.

[0331] The phosphor 127 can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. For example, a magenta phosphor 127c can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. The magenta phosphor 127c can absorb green light and emit white light.

[0332] Therefore, the types of phosphors 127 provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb can be unified.

[0333] Alternatively, a backlight unit for a display device can be provided that saves on manufacturing costs.

[0334] Will Figure 40 and Figure 37 Referring together, in one embodiment, the configuration direction of the eighth substrate 122h may be the same as that of the third substrate 122c. For example, the third substrate 122c and the eighth substrate 122h may have first to eighth rows Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2 arranged in opposite directions along the y-direction. The first row Ra1 of the third substrate 122c may form the first row Ro1 of the matrix pattern, and the eighth row Ra2 of the eighth substrate 122h may form the last row RoN of the matrix pattern.

[0335] The plurality of light sources 200 of the eighth substrate 122h may differ from the plurality of light sources 200b of the third substrate 122c. For example, the structure of the plurality of light sources 200 of the eighth substrate 122h may differ from the structure of the plurality of light sources 200b of the third substrate 122c. The arrangement of the plurality of diodes in each of the plurality of light sources 200 of the eighth substrate 122h may differ from the arrangement of the plurality of diodes in each of the plurality of light sources 200b of the third substrate 122c. For example, the light sources 200b of the third substrate 122c may include green light-emitting diodes 220, blue light-emitting diodes 230, and red light-emitting diodes 210 arranged sequentially along the y-direction, but the light sources 200 of the eighth substrate 122h may include red light-emitting diodes 210, green light-emitting diodes 220, and blue light-emitting diodes 230 arranged sequentially along the y-direction.

[0336] The second outermost diode of the eighth substrate 122h can be the same as the first outermost diode of the third substrate 122c. For example, a plurality of first outermost diodes of the third substrate 122c and a plurality of second outermost diodes of the eighth substrate 122h can be composed of a plurality of red light-emitting diodes 210.

[0337] A portion of the light emitted from the plurality of light sources 200b arranged in the first row Ra1 of the third substrate 122c can illuminate the first chamfered portion 126Ca. Colored light from the plurality of colored emitting regions of the plurality of first outer contour light sources 200xa of the third substrate 122c can illuminate the first chamfered portion 126Ca. For example, the plurality of first outermost contour diodes of the third substrate 122c can be composed of a plurality of red light-emitting diodes 210, and a portion of the emitting region of the red light-emitting diodes 210 can form a colored emitting region. Red light can then illuminate the first chamfered portion 126Ca.

[0338] A portion of the light emitted from the plurality of light sources 200 arranged in the eighth row Ra2 of the eighth substrate 122h can illuminate the second chamfered portion 126Cb. Colored light from the plurality of colored light-emitting regions of the plurality of light sources 200 arranged in the eighth row Ra2 of the eighth substrate 122h can illuminate the second chamfered portion 126Cb. For example, the plurality of second outermost diodes of the eighth substrate 122h can be composed of a plurality of red light-emitting diodes 210, and a portion of the light-emitting region of the red light-emitting diodes 210 can form a colored light-emitting region. Red light can illuminate the second chamfered portion 126Cb.

[0339] Therefore, light of the same color can be directed to the first chamfered portion 126Ca and the second chamfered portion 126Cb respectively.

[0340] The phosphor 127 can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. For example, a cyan phosphor 127b can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. The cyan phosphor 127b can absorb red light and emit white light.

[0341] Therefore, the types of phosphors 127 provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb can be unified.

[0342] Alternatively, a backlight unit for a display device can be provided that saves on manufacturing costs.

[0343] Will Figure 41 and Figure 37 Referring together, in one embodiment, the configuration direction of the eighth substrate 122h may be the same as that of the third substrate 122c. For example, the third substrate 122c and the eighth substrate 122h may have first to eighth rows Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2 arranged in opposite directions along the y-direction. The first row Ra1 of the third substrate 122c may form the first row Ro1 of the matrix pattern, and the eighth row Ra2 of the eighth substrate 122h may form the last row RoN of the matrix pattern.

[0344] The plurality of light sources 200d on the eighth substrate 122h can be the same as the plurality of light sources 200d on the third substrate 122c. For example, the structure and arrangement of the plurality of light sources 200d on the eighth substrate 122h can be the same as the structure and arrangement of the plurality of light sources 200d on the third substrate 122c.

[0345] The second outermost diode of the eighth substrate 122h can be the same as the first outermost diode of the third substrate 122c. For example, a plurality of first outermost diodes of the third substrate 122c and a plurality of second outermost diodes of the eighth substrate 122h can be composed of a plurality of red light-emitting diodes 211 and 212.

[0346] A portion of the light emitted from the plurality of light sources 200d arranged in the first row Ra1 of the third substrate 122c can illuminate the first chamfered portion 126Ca. Colored light from the plurality of colored emitting regions of the plurality of first outer contour light sources 200xa of the third substrate 122c can illuminate the first chamfered portion 126Ca. For example, the plurality of first outermost contour diodes of the third substrate 122c can be composed of a plurality of first red light-emitting diodes 211, and a portion of the emitting region of the first red light-emitting diode 211 can form a colored emitting region. Red light can then illuminate the first chamfered portion 126Ca.

[0347] A portion of the light emitted from the plurality of light sources 200d arranged in the eighth row Ra2 of the eighth substrate 122h can illuminate the second chamfered portion 126Cb. Colored light from the plurality of colored emitting regions of the plurality of light sources 200d arranged in the eighth row Ra2 of the eighth substrate 122h can illuminate the second chamfered portion 126Cb. For example, the plurality of second outermost diodes of the eighth substrate 122h can be composed of a plurality of second red light-emitting diodes 212, and a portion of the emitting region of the second red light-emitting diode 212 can form a colored emitting region. Red light can illuminate the second chamfered portion 126Cb.

[0348] Therefore, light of the same color can be directed to the first chamfered portion 126Ca and the second chamfered portion 126Cb respectively.

[0349] The phosphor 127 can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. For example, a cyan phosphor 127b can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. The cyan phosphor 127b can absorb red light and emit white light.

[0350] Therefore, the types of phosphors 127 provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb can be unified.

[0351] Alternatively, a backlight unit for a display device can be provided that saves on manufacturing costs.

[0352] Will Figure 41 and Figure 36 Referring together, the light source 200d includes a first red light-emitting diode 211 and a second red light-emitting diode 212 located at the edge of the arrangement. Therefore, regardless of the arrangement direction of the substrate 122, the first outermost diode and the second outermost diode can be composed of a plurality of red light-emitting diodes 210.

[0353] This allows for the provision of backlight units for display devices that offer greater design freedom and ease of assembly.

[0354] Reference Figure 42 and Figure 43 In one embodiment, the configuration direction of a portion of the plurality of first outline light sources 200xa may differ from the configuration direction of the remaining portions of the plurality of first outline light sources 200xa. For example, a portion of the plurality of first outline light sources 200xa may be rotated approximately 180 degrees relative to the remaining portions of the plurality of first outline light sources 200xa. That is, a portion of the plurality of first outline light sources 200xa may be configured in a reverse orientation, while the remaining portions of the plurality of first outline light sources 200xa may be configured in a forward orientation. For example, the forward-configured plurality of first outline light sources 200xa and the reverse-configured plurality of first outline light sources 200xa may be arranged alternately. For example, the plurality of first outline light sources 200xa arranged in odd-numbered positions may be configured in a forward orientation, while the plurality of first outline light sources 200xa arranged in even-numbered positions may be configured in a reverse orientation.

[0355] A plurality of first outermost diodes can be constructed from a combination of two of the following: a red LED 210, a green LED 220, and a blue LED 230. A portion of the plurality of first outermost diodes can be constructed from one of the following: a red LED 210, a green LED 220, and a blue LED 230, while the remaining portion of the plurality of first outermost diodes can be constructed from the other of the following: a red LED 210, a green LED 220, and a blue LED 230. For example, the plurality of first outermost diodes can be constructed from both a red LED 210 and a blue LED 230.

[0356] A portion and the remainder of the plurality of first outermost diodes can be arranged randomly. A portion and the remainder of the plurality of first outermost diodes can be mixed together. For example, a portion and the remainder of the plurality of first outermost diodes can be arranged alternately. For example, the plurality of first outermost diodes arranged in odd-numbered positions can be composed of a plurality of blue LEDs 230, and the plurality of first outermost diodes arranged in even-numbered positions can be composed of a plurality of red LEDs 210.

[0357] A portion of the light emitted from the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca. Colored light from the plurality of colored emitting regions of the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca. For example, the plurality of first outermost contour diodes can be composed of red light-emitting diodes 210 and blue light-emitting diodes 230, and a portion of the emitting regions of the red light-emitting diodes 220 and blue light-emitting diodes 230 can form colored emitting regions. Red and blue light can illuminate the second chamfered portion 126Cb.

[0358] Therefore, a backlight unit for a display device can be provided that improves color separation. For example, when a mixture of red and blue light is irradiated onto the first chamfered portion 126Ca, color separation can be alleviated.

[0359] Alternatively, a backlight unit for a display device that saves on manufacturing costs can be provided. For example, since the red and blue light are mixed to alleviate color separation, the phosphor 127 on the first chamfered portion 126Ca can be omitted.

[0360] In one embodiment, phosphor 127 may also be provided on the first chamfered portion 126Ca. Phosphor 127 may further include a green phosphor 127d on the first chamfered portion 126Ca. The green phosphor 127d can absorb light mixed with red and blue light and emit white light.

[0361] Similarly, the configuration orientation of a portion of the plurality of second outline light sources 200xb can differ from the configuration orientation of the remaining portions of the plurality of second outline light sources 200xb. For example, a portion of the plurality of second outline light sources 200xb can be rotated approximately 180 degrees relative to the remaining portions of the plurality of second outline light sources 200xb. That is, a portion of the plurality of second outline light sources 200xb can be configured in a reverse orientation, while the remaining portions of the plurality of second outline light sources 200xb can be configured in a forward orientation. For example, the forward-configured plurality of second outline light sources 200xb and the reverse-configured plurality of second outline light sources 200xb can be arranged alternately. For example, the plurality of second outline light sources 200xb arranged in odd-numbered positions can be configured in a forward orientation, while the plurality of second outline light sources 200xb arranged in even-numbered positions can be configured in a reverse orientation.

[0362] A plurality of second outermost diodes can be constructed from a combination of two of the following: red LED 210, green LED 220, and blue LED 230. A portion of the plurality of second outermost diodes can be constructed from one of the following: red LED 210, green LED 220, and blue LED 230, while the remaining portion can be constructed from the other of the following: red LED 210, green LED 220, and blue LED 230. For example, a plurality of second outermost diodes can be constructed from red LED 210 and blue LED 230.

[0363] A portion and the remainder of the plurality of second outermost diodes can be arranged randomly. A portion and the remainder of the plurality of second outermost diodes can be mixed together. For example, a portion and the remainder of the plurality of second outermost diodes can be arranged alternately. For example, the plurality of second outermost diodes arranged in odd-numbered positions can be composed of a plurality of red LEDs 210, and the plurality of second outermost diodes arranged in even-numbered positions can be composed of a plurality of blue LEDs 230.

[0364] A portion of the light emitted from the plurality of second outer contour light sources 200xb can illuminate the second chamfered portion 126Cb. Colored light from the plurality of colored emitting regions of the plurality of second outer contour light sources 200xb can illuminate the second chamfered portion 126Cb. For example, the plurality of second outer contour diodes can be composed of red light-emitting diodes 210 and blue light-emitting diodes 230, and a portion of the emitting regions of the red light-emitting diodes 210 and blue light-emitting diodes 230 can form colored emitting regions. Red and blue light can illuminate the second chamfered portion 126Cb.

[0365] Therefore, a backlight unit for a display device can be provided that improves color separation. For example, when light mixed with red and blue light shines on the second chamfer 126Cb, color separation can be alleviated.

[0366] Alternatively, a backlight unit for a display device that saves on manufacturing costs can be provided. For example, since the red and blue light are mixed to alleviate color separation, the phosphor 127 on the second chamfer 126Cb can be omitted.

[0367] In one embodiment, phosphor 127 may also be provided on the second chamfered portion 126Cb. For example, green phosphor 127d may be provided on the second chamfered portion 126Cb. Green phosphor 127d can absorb light mixed with red and blue light and emit white light.

[0368] However, in one embodiment, depending on the characteristics of the protective lenses 240 and 250, the light irradiating the first chamfered portion 126Ca and the second chamfered portion 126Cb can be different. For example, depending on the characteristics of the protective lenses 240 and 250, a colored light-emitting region of a green light-emitting diode 220 located at the center of each of the first outer contour light source 200xa and the second outer contour light source 200xb can be formed, and the green light from the colored light-emitting region can also irradiate the first chamfered portion 126Ca and the second chamfered portion 126Cb. A magenta phosphor can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. The magenta phosphor can absorb green light and emit white light.

[0369] The arrangement direction of the red LED 210, green LED 220, and blue LED 230 of each of the plurality of third outer contour light sources 200xc can be parallel to the length direction of the third chamfered portion 126Cc. That is, the red LED 210, green LED 220, and blue LED 230 can be arranged alternately along the length direction of the third chamfered portion 126Cc. Thus, red light, green light, and blue light can be combined to achieve white light, which can then illuminate the third chamfered portion 126Cc.

[0370] Therefore, the phosphor 127 does not need to be provided on the third chamfer 126Cc, which can provide a backlight unit for a display device that saves manufacturing costs.

[0371] In addition, color separation on the third chamfer 126Cc can be minimized even without the addition of an additional phosphor 127.

[0372] Reference Figure 44 and Figure 45In one embodiment, the configuration direction of a portion of the plurality of first outline light sources 200xa may differ from the configuration direction of the remaining portions of the plurality of first outline light sources 200xa. For example, a portion of the plurality of first outline light sources 200xa may be rotated approximately 180 degrees relative to the remaining portions of the plurality of first outline light sources 200xa. That is, a portion of the plurality of first outline light sources 200xa may be configured in a reverse orientation, while the remaining portions of the plurality of first outline light sources 200xa may be configured in a forward orientation. For example, the forward-configured plurality of first outline light sources 200xa and the reverse-configured plurality of first outline light sources 200xa may be arranged alternately. For example, the plurality of first outline light sources 200xa arranged in odd-numbered positions may be configured in a forward orientation, while the plurality of first outline light sources 200xa arranged in even-numbered positions may be configured in a reverse orientation.

[0373] A plurality of first outermost diodes can be constructed from a combination of two of the following: a red LED 210, a green LED 220, and a blue LED 230. A portion of the plurality of first outermost diodes can be constructed from one of the following: a red LED 210, a green LED 220, and a blue LED 230, while the remaining portion of the plurality of first outermost diodes can be constructed from the other of the following: a red LED 210, a green LED 220, and a blue LED 230. For example, the plurality of first outermost diodes can be constructed from a red LED 210 and a green LED 220.

[0374] A portion and the remainder of the plurality of first outermost diodes can be arranged randomly. A portion and the remainder of the plurality of first outermost diodes can be mixed together. For example, a portion and the remainder of the plurality of first outermost diodes can be arranged alternately. For example, the plurality of first outermost diodes arranged in odd-numbered positions can be composed of a plurality of green LEDs 220, and the plurality of first outermost diodes arranged in even-numbered positions can be composed of a plurality of red LEDs 210.

[0375] A portion of the light emitted from the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca. Colored light from the plurality of colored emitting regions of the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca. For example, the plurality of first outermost contour diodes can be composed of red light-emitting diodes 210 and green light-emitting diodes 220, and a portion of the emitting regions of the red light-emitting diodes 210 and green light-emitting diodes 220 can form colored emitting regions. Red and green light can illuminate the second chamfered portion 126Cb.

[0376] Therefore, a backlight unit for a display device can be provided that improves color separation. For example, light mixed with red and green light can be directed onto the first chamfer 126Ca, thus mitigating color separation.

[0377] Alternatively, a backlight unit for a display device that saves on manufacturing costs can be provided. For example, since the red and blue light are mixed to alleviate color separation, the phosphor 127 on the first chamfered portion 126Ca can be omitted.

[0378] In one embodiment, the phosphor 127 may also be provided on the first chamfered portion 126Ca. The phosphor 127 may further include a blue phosphor 127e on the first chamfered portion 126Ca. The blue phosphor 127e can absorb light mixed with red and green light and emit white light.

[0379] Similarly, the configuration orientation of a portion of the plurality of second outline light sources 200xb can differ from the configuration orientation of the remaining portions of the plurality of second outline light sources 200xb. For example, a portion of the plurality of second outline light sources 200xb can be rotated approximately 180 degrees relative to the remaining portions of the plurality of second outline light sources 200xb. That is, a portion of the plurality of second outline light sources 200xb can be configured in a reverse orientation, while the remaining portions of the plurality of second outline light sources 200xb can be configured in a forward orientation. For example, the forward-configured plurality of second outline light sources 200xb and the reverse-configured plurality of second outline light sources 200xb can be arranged alternately. For example, the plurality of second outline light sources 200xb arranged in odd-numbered positions can be configured in a forward orientation, while the plurality of second outline light sources 200xb arranged in even-numbered positions can be configured in a reverse orientation.

[0380] A plurality of second outermost diodes can be constructed from a combination of two of the following: a red LED 210, a green LED 220, and a blue LED 230. A portion of the plurality of second outermost diodes can be constructed from one of the following: a red LED 210, a green LED 220, and a blue LED 230, while the remaining portions of the plurality of second outermost diodes can be constructed from the other of the following: a red LED 210, a green LED 220, and a blue LED 230. For example, a plurality of second outermost diodes can be constructed from a red LED 210 and a green LED 220.

[0381] A portion and the remainder of the plurality of second outermost diodes can be arranged randomly. A portion and the remainder of the plurality of second outermost diodes can be mixed together. For example, a portion and the remainder of the plurality of second outermost diodes can be arranged alternately. For example, the plurality of second outermost diodes arranged in odd-numbered positions can be composed of a plurality of red LEDs 210, and the plurality of second outermost diodes arranged in even-numbered positions can be composed of a plurality of green LEDs 220.

[0382] A portion of the light emitted from the plurality of second outer contour light sources 200xb can illuminate the second chamfered portion 126Cb. Colored light from the plurality of colored emitting regions of the plurality of second outer contour light sources 200xb can illuminate the second chamfered portion 126Cb. For example, the plurality of second outer contour diodes can be composed of red light-emitting diodes 210 and green light-emitting diodes 220, and a portion of the emitting regions of the red light-emitting diodes 210 and green light-emitting diodes 220 can form colored emitting regions. Red and green light can illuminate the second chamfered portion 126Cb.

[0383] Therefore, a backlight unit for a display device can be provided that improves color separation. For example, when light mixed with red and blue light shines on the second chamfer 126Cb, color separation can be alleviated.

[0384] Alternatively, a backlight unit for a display device that saves on manufacturing costs can be provided. For example, since the red and blue light are mixed to alleviate color separation, the phosphor 127 on the second chamfer 126Cb can be omitted.

[0385] In one embodiment, the phosphor 127 may also be provided on the second chamfered portion 126Cb. For example, a blue phosphor 127e may be provided on the second chamfered portion 126Cb. The blue phosphor 127e can absorb light mixed with red and green light and emit white light.

[0386] However, in one embodiment, the light irradiated onto the first chamfered portion 126Ca and the second chamfered portion 126Cb can be different depending on the characteristics of the protective lenses 240 and 250. For example, depending on the characteristics of the protective lenses 240 and 250, a colored light-emitting region of the blue light-emitting diode 230 located at the center of each of the first outer contour light source 200xa and the second outer contour light source 200xb can be formed, and the blue light from the colored light-emitting region can also irradiate the first chamfered portion 126Ca and the second chamfered portion 126Cb. A yellow phosphor can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. The yellow phosphor can absorb green light and emit white light.

[0387] The arrangement direction of the red LED 210, green LED 220, and blue LED 230 of each of the plurality of third outer contour light sources 200xc can be parallel to the length direction of the third chamfered portion 126Cc. That is, the red LED 210, blue LED 230, and green LED 220 can be arranged alternately along the length direction of the third chamfered portion 126Cc. Thus, red light, blue light, and green light can be combined to achieve white light, which can then illuminate the third chamfered portion 126Cc.

[0388] Therefore, the phosphor 127 does not need to be provided on the third chamfer 126Cc, which can provide a backlight unit for a display device that saves manufacturing costs.

[0389] In addition, color separation on the third chamfer 126Cc can be minimized even without the addition of a phosphor 127.

[0390] Reference Figure 46 and Figure 47 In one embodiment, the configuration direction of a portion of the plurality of first outline light sources 200xa may differ from the configuration direction of the remaining portions of the plurality of first outline light sources 200xa. For example, a portion of the plurality of first outline light sources 200xa may be rotated approximately 180 degrees relative to the remaining portions of the plurality of first outline light sources 200xa. That is, a portion of the plurality of first outline light sources 200xa may be configured in a reverse orientation, while the remaining portions of the plurality of first outline light sources 200xa may be configured in a forward orientation. For example, the forward-configured plurality of first outline light sources 200xa and the reverse-configured plurality of first outline light sources 200xa may be arranged alternately. For example, the plurality of first outline light sources 200xa arranged in odd-numbered positions may be configured in a forward orientation, while the plurality of first outline light sources 200xa arranged in even-numbered positions may be configured in a reverse orientation.

[0391] A plurality of first outermost diodes can be constructed from a combination of two of the following: a red LED 210, a green LED 220, and a blue LED 230. A portion of the plurality of first outermost diodes can be constructed from one of the following: a red LED 210, a green LED 220, and a blue LED 230, while the remaining portions of the plurality of first outermost diodes can be constructed from the other of the following: a red LED 210, a green LED 220, and a blue LED 230. For example, the plurality of first outermost diodes can be constructed from a green LED 220 and a blue LED 230.

[0392] A portion and the remainder of the plurality of first outermost diodes can be arranged randomly. A portion and the remainder of the plurality of first outermost diodes can be mixed together. For example, a portion and the remainder of the plurality of first outermost diodes can be arranged alternately. For example, the plurality of first outermost diodes arranged in odd-numbered positions correspond to a plurality of blue LEDs 230, and the plurality of first outermost diodes arranged in even-numbered positions can be composed of a plurality of green LEDs 220.

[0393] A portion of the light emitted from the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca. Colored light from the plurality of colored emitting regions of the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca. For example, the plurality of first outermost contour diodes can be composed of green light-emitting diodes 220 and blue light-emitting diodes 230, and a portion of the emitting regions of the green and blue light-emitting diodes 230 can form a colored emitting region. Green and blue light can illuminate the first chamfered portion 126Ca.

[0394] Therefore, a backlight unit for a display device can be provided that improves color separation. For example, when light mixed with green and blue light shines on the first chamfer 126Ca, color separation can be alleviated.

[0395] Alternatively, a backlight unit for a display device can be provided that saves on manufacturing costs. For example, since the color separation phenomenon is alleviated by mixing green and blue light, the phosphor 127 on the first chamfer 126Ca can be omitted.

[0396] In one embodiment, phosphor 127 may also be provided on the first chamfered portion 126Ca. Phosphor 127 may further include a red phosphor 127f on the first chamfered portion 126Ca. The red phosphor 127f can absorb a mixture of green and blue light and emit white light.

[0397] Similarly, the configuration orientation of a portion of the plurality of second outline light sources 200xb can differ from the configuration orientation of the remaining portions of the plurality of second outline light sources 200xb. For example, a portion of the plurality of second outline light sources 200xb can be rotated approximately 180 degrees relative to the remaining portions of the plurality of second outline light sources 200xb. That is, a portion of the plurality of second outline light sources 200xb can be configured in a reverse orientation, while the remaining portions of the plurality of second outline light sources 200xb can be configured in a forward orientation. For example, the forward-configured plurality of second outline light sources 200xb and the reverse-configured plurality of second outline light sources 200xb can be arranged alternately. For example, the plurality of second outline light sources 200xb arranged in odd-numbered positions can be configured in a forward orientation, while the plurality of second outline light sources 200xb arranged in even-numbered positions can be configured in a reverse orientation.

[0398] A plurality of second outermost diodes can be constructed from a combination of two of the following: red LED 210, green LED 220, and blue LED 230. A portion of the plurality of second outermost diodes can be constructed from one of the following: red LED 210, green LED 220, and blue LED 230, while the remaining portion can be constructed from the other of the following: red LED 210, green LED 220, and blue LED 230. For example, a plurality of second outermost diodes can be constructed from green LED 220 and blue LED 230.

[0399] A portion and the remainder of the plurality of second outermost diodes can be arranged randomly. A portion and the remainder of the plurality of second outermost diodes can be mixed together. For example, a portion and the remainder of the plurality of second outermost diodes can be arranged alternately. For example, the plurality of second outermost diodes arranged in odd-numbered positions correspond to a plurality of green LEDs 220, and the plurality of second outermost diodes arranged in even-numbered positions can be composed of a plurality of blue LEDs 230.

[0400] A portion of the light emitted from the plurality of second outer contour light sources 200xb can illuminate the second chamfered portion 126Cb. Colored light from the plurality of colored emitting regions of the plurality of second outer contour light sources 200xb can illuminate the second chamfered portion 126Cb. For example, the plurality of second outer contour diodes can be composed of green light-emitting diodes 220 and blue light-emitting diodes 230, and a portion of the emitting regions of the green and blue light-emitting diodes 230 can form a colored emitting region. Green and blue light can illuminate the second chamfered portion 126Cb.

[0401] Therefore, a backlight unit for a display device can be provided that improves color separation. For example, when light mixed with green and blue light shines on the second chamfer 126Cb, color separation can be alleviated.

[0402] Alternatively, a backlight unit for a display device that saves on manufacturing costs can be provided. For example, since the color separation phenomenon is alleviated by mixing green and blue light, the phosphor 127 on the second chamfer 126Cb can be omitted.

[0403] In one embodiment, phosphor 127 may also be provided on the second chamfered portion 126Cb. For example, red phosphor 127f may be provided on the second chamfered portion 126Cb. Red phosphor 127f can absorb light mixed with green and blue light and emit white light.

[0404] However, in one embodiment, depending on the characteristics of the protective lenses 240 and 250, the light irradiating the first chamfered portion 126Ca and the second chamfered portion 126Cb can be different. For example, depending on the characteristics of the protective lenses 240 and 250, a colored light-emitting region of a red light-emitting diode 210 located at the center of each of the first outer contour light source 200xa and the second outer contour light source 200xb can be formed, and the red light from the colored light-emitting region can also irradiate the first chamfered portion 126Ca and the second chamfered portion 126Cb. A cyan phosphor can be provided on the first chamfered portion 126Ca and the second chamfered portion 126Cb. The cyan phosphor can absorb red light and emit white light.

[0405] The arrangement direction of the red LED 210, green LED 220, and blue LED 230 of each of the plurality of third outer contour light sources 200xc can be parallel to the length direction of the third chamfered portion 126Cc. That is, the green LED 220, red LED 210, and blue LED 230 can be arranged alternately along the length direction of the third chamfered portion 126Cc. Thus, red light, blue light, and green light can be combined to achieve white light, which can then illuminate the third chamfered portion 126Cc.

[0406] Therefore, the phosphor 127 does not need to be provided on the third chamfer 126Cc, which can provide a backlight unit for a display device that saves manufacturing costs.

[0407] In addition, color separation on the third chamfer 126Cc can be minimized even without the addition of an additional phosphor 127.

[0408] Reference Figure 48In one embodiment, a plurality of second outer contour light sources 200xb may be substantially the same as a plurality of first outer contour light sources 200xa. For example, the structure of each of the plurality of second outer contour light sources 200xb may be substantially the same as the structure of each of the plurality of first outer contour light sources 200xa. For example, a plurality of light sources 200e of the eighth substrate 122h may be substantially the same as a plurality of light sources 200e of the third substrate 122c.

[0409] The configuration direction of the eighth substrate 122h can be the same as that of the third substrate 122c. For example, the third substrate 122c and the eighth substrate 122h can have first to eighth rows Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2 arranged in opposite directions along the y-direction. The first row Ra1 of the third substrate 122c can form the first row Ro1 of the matrix pattern, and the eighth row Ra2 of the eighth substrate 122h can form the last row RoN of the matrix pattern.

[0410] A portion of the light emitted from the plurality of light sources 200e arranged in the first row Ra1 of the third substrate 122c can illuminate the first chamfered portion 126Ca. For example, colored light from the plurality of colored light-emitting regions of the plurality of first outline light sources 200xa of the third substrate 122c can illuminate the first chamfered portion 126Ca.

[0411] Each of the plurality of first outer contour light sources 200xa on the third substrate 122c may include a plurality of first outermost contour diodes. The plurality of first outermost contour diodes may be composed of a combination of two of a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230. A portion of the plurality of first outermost contour diodes may be composed of one of the red light-emitting diode 210, the green light-emitting diode 220, and the blue light-emitting diode 230, while the remaining portion of the plurality of first outermost contour diodes may be composed of another of the red light-emitting diode 210, the green light-emitting diode 220, and the blue light-emitting diode 230. For example, each of the plurality of first outer contour light sources 200xa may include a plurality of first outermost contour diodes composed of a green light-emitting diode 220 and a blue light-emitting diode 230.

[0412] A portion and the remainder of the plurality of first outermost diodes can be arranged in a mixed manner. A portion and the remainder of the plurality of first outermost diodes can be arranged alternately. For example, the green light-emitting diodes 220 and blue light-emitting diodes 230 of the plurality of first outermost light sources 200xa can be arranged alternately along the x-direction.

[0413] A portion of the light emitted from the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca. Colored light from the plurality of colored emitting regions of the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca. For example, the plurality of first outermost contour diodes can be composed of green light-emitting diodes 220 and blue light-emitting diodes 230, and a portion of the emitting regions of the green light-emitting diodes 220 and blue light-emitting diodes 230 can form colored emitting regions. Green and blue light can illuminate the first chamfered portion 126Ca.

[0414] Therefore, a backlight unit for a display device can be provided that improves color separation. For example, when light mixed with green and blue light shines on the first chamfer 126Ca, color separation can be alleviated.

[0415] Alternatively, a backlight unit for a display device can be provided that saves on manufacturing costs. For example, since the color separation phenomenon is alleviated by mixing green and blue light, the phosphor 127 on the first chamfer 126Ca can be omitted.

[0416] In one embodiment, the phosphor 127 may also be provided on the first chamfered portion 126Ca. For example, a red phosphor 127f may be provided on the first chamfered portion 126Ca. The red phosphor 127f can absorb light mixed with green and blue light and emit white light.

[0417] A portion of the light emitted from the plurality of light sources 200 arranged in the eighth row Ra2 of the eighth substrate 122h can illuminate the second chamfered portion 126Cb. Colored light from the plurality of colored light-emitting regions of the plurality of light sources 200 arranged in the eighth row Ra2 of the eighth substrate 122h can illuminate the second chamfered portion 126Cb.

[0418] Each of the plurality of second outer contour light sources 200xb on the eighth substrate 122h may include a second outermost contour diode closest to the second chamfer 126Cb. For example, each of the plurality of second outer contour light sources 200xb may include a second outermost contour diode closest to the second chamfer 126Cb, and the plurality of second outermost contour diodes may be composed of a plurality of red light-emitting diodes 210. The colors of the plurality of second outermost contour diodes may be the same. For example, the plurality of second outer contour light sources 200xb arranged in the last row RoN of the matrix pattern may be arranged in the same direction, and the plurality of second outermost contour diodes may be composed of a plurality of red light-emitting diodes 210.

[0419] The second outermost diode may have a colored light-emitting region. The colored light from the colored light-emitting region of the second outermost diode can illuminate the second chamfered portion 126Cb. For example, a portion of the multiple light-emitting regions of the plurality of red light-emitting diodes 210 closest to the second chamfered portion 126Cb can form a white light-emitting region, and the remaining portions of the multiple light-emitting regions of the plurality of red light-emitting diodes 210 can form a red colored light-emitting region. The red light from the colored light-emitting region can illuminate the second chamfered portion 126Cb.

[0420] A phosphor 127 may be provided on the second chamfered portion 126Cb. For example, a cyan phosphor 127 may be provided on the second chamfered portion 126Cb. The cyan phosphor 127 may face a plurality of second outermost diodes composed of a plurality of red light-emitting diodes 210. Thus, the cyan phosphor 127 may absorb the red light from the red light-emitting diodes 210 and emit white light.

[0421] However, in one embodiment, the light irradiated onto the second chamfered portion 126Cb can be different depending on the characteristics of the protective lenses 240 and 250. For example, a portion of the emitting regions of the green LEDs 220 and blue LEDs 230 located inside each of the plurality of second outer contour light sources 200xb can form a colored emitting region, and both green and blue light can irradiate the second chamfered portion 126Cb. A red phosphor can be provided on the second chamfered portion 126Cb. The red phosphor can absorb the mixed light of green and blue light and emit white light.

[0422] Will Figure 49 and Figure 48 Referring to the above, in one embodiment, the configuration direction of the plurality of second outer contour light sources 200xb may differ from the configuration direction of the plurality of first outer contour light sources 200xa. For example, each of the plurality of second outer contour light sources 200xb may be configured with its configuration rotated approximately 180 degrees relative to each of the plurality of first outer contour light sources 200xa. That is, the plurality of first outer contour light sources 200xa may be configured facing forward, and the plurality of second outer contour light sources 200xb may be configured facing backward.

[0423] Each of the plurality of second outer contour light sources 200xb on the eighth substrate 122h may include a plurality of second outer contour diodes. For example, each of the plurality of second outer contour light sources 200xb may include a green light-emitting diode 220 and a blue light-emitting diode 230 adjacent to and adjacent to each other on the second chamfered portion 126Cb. The green light-emitting diode 220 and the blue light-emitting diode 230 may each have a substantially square shape. The light-emitting areas of the green light-emitting diode 220 and the blue light-emitting diode 230 may be substantially the same as each other.

[0424] A plurality of second outermost contour diodes may be composed of a combination of two of the following: a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230. A portion of the plurality of second outermost contour diodes may be composed of one of the following: a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230, while the remaining portions of the plurality of second outermost contour diodes may be composed of the other of the following: a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230. For example, each of the plurality of first outermost contour light sources 200xa may include a plurality of second outermost contour diodes composed of a green light-emitting diode 220 and a blue light-emitting diode 230.

[0425] A portion and the remainder of the plurality of second outermost diodes can be arranged in a mixed manner. A portion and the remainder of the plurality of second outermost diodes can be arranged alternately. For example, the green light-emitting diodes 220 and blue light-emitting diodes 230 of the plurality of second outermost light sources 200xa can be arranged alternately.

[0426] A portion of the light emitted from the plurality of second outer contour light sources 200xb can illuminate the second chamfered portion 126Cb. Colored light from the plurality of colored emitting regions of the plurality of second outer contour light sources 200xb can illuminate the second chamfered portion 126Cb. For example, the plurality of second outer contour diodes can be composed of green light-emitting diodes 220 and blue light-emitting diodes 230, and a portion of the emitting regions of the green light-emitting diodes 220 and blue light-emitting diodes 230 can form colored emitting regions. Green and blue light can illuminate the second chamfered portion 126Cb.

[0427] Therefore, a backlight unit for a display device can be provided that improves color separation. For example, when light mixed with green and blue light shines on the second chamfer 126Cb, color separation can be alleviated.

[0428] Alternatively, a backlight unit for a display device that saves on manufacturing costs can be provided. For example, since the color separation phenomenon is alleviated by mixing green and blue light, the phosphor 127 on the second chamfer 126Cb can be omitted.

[0429] In one embodiment, phosphor 127 may also be provided on the second chamfered portion 126Cb. For example, red phosphor 127f may be provided on the second chamfered portion 126Cb. Red phosphor 127f can absorb light mixed with green and blue light and emit white light.

[0430] Will Figure 50 and Figure 48Referring to the above, in one embodiment, a portion of the light emitted from a plurality of light sources 200 arranged in the first row Ra1 of the first substrate 122a may illuminate the first chamfered portion 126Ca. For example, colored light from a plurality of colored light-emitting regions of a plurality of first outline light sources 200xa of the first substrate 122a may illuminate the first chamfered portion 126Ca.

[0431] Each of the plurality of first outer contour light sources 200xa on the first substrate 122a may include a plurality of first outermost contour diodes. For example, each of the plurality of first outer contour light sources 200xa may include a green light-emitting diode 220 and a blue light-emitting diode 230 that are adjacent to and adjacent to each other on the first chamfered portion 126Ca.

[0432] The plurality of first outermost diodes can be composed of a combination of two of the following: a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230. A portion of the plurality of first outermost diodes can be composed of one of the following: a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230, while the remaining portions of the plurality of first outermost diodes can be composed of the other of the following: a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230. For example, each of the plurality of first outermost light sources 200xa can include a plurality of first outermost diodes composed of a green light-emitting diode 220 and a blue light-emitting diode 230.

[0433] A portion and the remainder of the plurality of first outermost diodes can be arranged in a mixed manner. A portion and the remainder of the plurality of first outermost diodes can be arranged alternately. For example, the green light-emitting diodes 220 and blue light-emitting diodes 230 of the plurality of first outermost light sources 200xa can be arranged alternately along the x-direction.

[0434] A portion of the light emitted from the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca. Colored light from the plurality of colored emitting regions of the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca. For example, the plurality of first outermost contour diodes can be composed of green light-emitting diodes 220 and blue light-emitting diodes 230, and a portion of the emitting regions of the green light-emitting diodes 220 and blue light-emitting diodes 230 can form colored emitting regions. Green and blue light can illuminate the first chamfered portion 126Ca.

[0435] Therefore, a backlight unit for a display device can be provided that improves color separation. For example, when light mixed with green and blue light shines on the first chamfer 126Ca, color separation can be alleviated.

[0436] Alternatively, a backlight unit for a display device can be provided that saves on manufacturing costs. For example, since the color separation phenomenon is alleviated by mixing green and blue light, the phosphor 127 on the first chamfer 126Ca can be omitted.

[0437] In one embodiment, the phosphor 127 may also be provided on the first chamfered portion 126Ca. For example, a red phosphor 127f may be provided on the first chamfered portion 126Ca. The red phosphor 127f can absorb light mixed with green and blue light and emit white light.

[0438] A portion of the light emitted from the plurality of light sources 200 arranged in the first column of the first substrate 122a can illuminate the third chamfered portion 126Cc. For example, colored light from the plurality of colored light-emitting regions of the plurality of third outer contour light sources 200xc can illuminate the third chamfered portion 126Cc.

[0439] Each of the plurality of third outer contour light sources 200xc on the first substrate 122a may include a plurality of third outermost contour diodes. For example, each of the plurality of third outer contour light sources 200xc may include a red light-emitting diode and a blue light-emitting diode 230 that are closest to the third chamfer 126Cc and adjacent to each other.

[0440] The plurality of third outermost contour diodes can be composed of a combination of two of the following: red LED 210, green LED 220, and blue LED 230. A portion of the plurality of third outermost contour diodes can be composed of one of the following: red LED 210, green LED 220, and blue LED 230, while the remaining portion can be composed of the other of the following: red LED 210, green LED 220, and blue LED 230. For example, each of the plurality of third outermost contour light sources 200xc may include a plurality of third outermost contour diodes composed of red LED 210 and blue LED 230.

[0441] A portion and the remainder of a plurality of third outermost diodes can be arranged in a mixed manner. A portion and the remainder of a plurality of third outermost diodes can be arranged alternately. For example, a plurality of red light-emitting diodes 210 and blue light-emitting diodes 230 of third outermost light sources 200xc can be arranged alternately along the y-direction.

[0442] A portion of the light emitted from the plurality of third outer contour light sources 200xc can illuminate the third chamfered portion 126Cc. Colored light from the plurality of colored emitting regions of the plurality of third outer contour light sources 200xc can illuminate the third chamfered portion 126Cc. For example, the plurality of third outer contour diodes can be composed of red light-emitting diodes 210 and blue light-emitting diodes 230, and a portion of the emitting regions of the red light-emitting diodes 210 and blue light-emitting diodes 230 can form colored emitting regions. Red and blue light can illuminate the third chamfered portion 126Cc.

[0443] Therefore, a backlight unit for a display device can be provided that improves color separation. For example, when light mixed with red and blue light shines onto the third chamfer 126Cc, color separation can be alleviated.

[0444] Alternatively, a backlight unit for a display device that saves on manufacturing costs can be provided. For example, since the red and blue light are mixed to alleviate color separation, the phosphor 127 on the first chamfered portion 126Ca can be omitted.

[0445] In one embodiment, the phosphor 127 may also be provided on the third chamfered portion 126Cc. For example, a green phosphor 127d may be provided on the third chamfered portion 126Cc. The green phosphor 127d can absorb a mixture of red and blue light and emit white light.

[0446] Will Figure 51 and Figure 24 Referring to the above, in one embodiment, the red light-emitting diode 210, the green light-emitting diode 220, and the blue light-emitting diode 230 of the light source 200f can be arranged sequentially. For example, the red light-emitting diode 210, the green light-emitting diode 220, and the blue light-emitting diode 230 of the light source 200f can be arranged sequentially in a clockwise direction.

[0447] Reference Figure 52 In one embodiment, the red light-emitting diode 210 may include a first red light-emitting diode 211 and a second red light-emitting diode 212. The first red light-emitting diode 211 and the second red light-emitting diode 212 may each have a substantially square shape. The light-emitting area of ​​the first red light-emitting diode or the second red light-emitting diode 212 may be substantially the same as the light-emitting area of ​​the green light-emitting diode 220 or the blue light-emitting diode 230.

[0448] The first red LED 211 and the second red LED 212 may not be adjacent to each other. The first red LED 211 and the second red LED 212 may be separated from each other. The green LED 220 and the blue LED 230 may be located between the first red LED 211 and the second red LED 212. For example, the first red LED 211, the blue LED 230, the second red LED 212, and the green LED 220 of the light source 200g may be arranged sequentially in a clockwise direction.

[0449] This improves the heat dissipation performance of the red LED 210. For example, since the first red LED 211 and the second red LED 212 are separated from each other, the heat concentration generated by the first red LED 211 and the second red LED 212 can be minimized.

[0450] In addition, it can minimize the performance degradation of the red light-emitting diode 210 caused by heat.

[0451] In addition, it can improve the performance of white light realization of 200g light source.

[0452] Alternatively, a backlight unit 120 for a display device that can improve color performance and / or brightness can be provided.

[0453] Will Figure 53 and Figure 11 and Figure 27 Referring together, in one embodiment, a plurality of second outer contour light sources 200xb may be substantially the same as a plurality of first outer contour light sources 200xa. For example, the structure of each of the plurality of second outer contour light sources 200xb may be substantially the same as the structure of each of the plurality of first outer contour light sources 200xa.

[0454] The configuration direction of the eighth substrate 122h can be the same as that of the third substrate 122c. For example, the third substrate 122c and the eighth substrate 122h can have first to eighth rows Ra1, Rb1, Rc1, Rd1, Rd2, Rc2, Rb2, Ra2 arranged in opposite directions along the y-direction. The first row Ra1 of the third substrate 122c can form the first row Ro1 of the matrix pattern, and the eighth row Ra2 of the eighth substrate 122h can form the last row RoN of the matrix pattern.

[0455] A portion of the light emitted from the plurality of light sources 200g arranged in the first row Ra1 of the third substrate 122c can illuminate the first chamfered portion 126Ca. For example, colored light from the plurality of colored light-emitting regions of the plurality of first outline light sources 200xa of the third substrate 122c can illuminate the first chamfered portion 126Ca.

[0456] Each of the plurality of first outer contour light sources 200xa on the third substrate 122c may include a plurality of first outermost contour diodes. The plurality of first outermost contour diodes may be composed of a combination of two of a first red light-emitting diode 211, a second red light-emitting diode 212, a green light-emitting diode 220, and a blue light-emitting diode 230. A portion of the plurality of first outermost contour diodes may be composed of one of the first red light-emitting diode 211, the second red light-emitting diode 212, the green light-emitting diode 220, and the blue light-emitting diode 230, while the remaining portion of the plurality of first outermost contour diodes may be composed of another of the first red light-emitting diode 211, the second red light-emitting diode 212, the green light-emitting diode 220, and the blue light-emitting diode 230. For example, each of the plurality of first outer contour light sources 200xa may include a plurality of first outermost contour diodes composed of a first red light-emitting diode 211 and a blue light-emitting diode 230.

[0457] A portion and the remainder of the plurality of first outermost diodes can be arranged in a mixed manner. A portion and the remainder of the plurality of first outermost diodes can be arranged alternately. For example, a plurality of first red light-emitting diodes 211 and a plurality of blue light-emitting diodes 230 of the plurality of first outermost light sources 200xa can be arranged alternately along the x-direction.

[0458] A portion of the light emitted from the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca. Colored light from the plurality of colored emitting regions of the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca. For example, the plurality of first outermost contour diodes can be composed of a plurality of first red light-emitting diodes 211 and a plurality of blue light-emitting diodes 230, and a portion of the plurality of emitting regions of the first red light-emitting diodes 211 and blue light-emitting diodes 230 can form colored emitting regions. Red and blue light can illuminate the first chamfered portion 126Ca.

[0459] Therefore, a backlight unit for a display device can be provided that improves color separation. For example, when a mixture of red and blue light is irradiated onto the first chamfered portion 126Ca, color separation can be alleviated.

[0460] Alternatively, a backlight unit for a display device that saves on manufacturing costs can be provided. For example, since the red and blue light are mixed to alleviate color separation, the phosphor 127 on the first chamfered portion 126Ca can be omitted.

[0461] In one embodiment, the phosphor 127 may also be provided on the first chamfered portion 126Ca. For example, a green phosphor 127d may be provided on the first chamfered portion 126Ca. The green phosphor 127d can absorb light mixed with red and blue light and emit white light.

[0462] A portion of the light emitted from the plurality of light sources 200g arranged in the eighth row Ra2 of the eighth substrate 122h can illuminate the second chamfered portion 126Cb. For example, colored light from the plurality of colored light-emitting regions of the plurality of second outer contour light sources 200xb of the eighth substrate 122h can illuminate the second chamfered portion 126Cb.

[0463] Each of the plurality of second outer contour light sources 200xb on the eighth substrate 122h may include a plurality of second outermost contour diodes. The plurality of second outermost contour diodes may be composed of a combination of two of the first red light-emitting diode 211, the second red light-emitting diode 212, the green light-emitting diode 220, and the blue light-emitting diode 230. A portion of the plurality of second outermost contour diodes may be composed of one of the first red light-emitting diode 211, the second red light-emitting diode 212, the green light-emitting diode 220, and the blue light-emitting diode 230, while the remaining portion may be composed of another of the first red light-emitting diode 211, the second red light-emitting diode 212, the green light-emitting diode 220, and the blue light-emitting diode 230. For example, each of the plurality of second outer contour light sources 200xb may include a plurality of second outermost contour diodes corresponding to the second red light-emitting diode 212 and the green light-emitting diode 220.

[0464] A portion and the remainder of the plurality of second outermost diodes can be arranged in a mixed manner. A portion and the remainder of the plurality of second outermost diodes can be arranged alternately. For example, a plurality of second red light-emitting diodes 212 and a plurality of green light-emitting diodes 220 of the plurality of second outermost light sources 200xb can be arranged alternately along the x-direction.

[0465] A portion of the light emitted from the plurality of second outer contour light sources 200xb can illuminate the second chamfered portion 126Cb. Colored light from the plurality of colored emitting regions of the plurality of second outer contour light sources 200xb can illuminate the second chamfered portion 126Cb. For example, the plurality of second outer contour diodes can be composed of a plurality of second red light-emitting diodes 212 and a plurality of green light-emitting diodes 220, and a portion of the plurality of emitting regions of the second red light-emitting diodes 212 and green light-emitting diodes 220 can form colored emitting regions. Red and green light can illuminate the second chamfered portion 126Cb.

[0466] Therefore, a backlight unit for a display device can be provided that improves color separation. For example, when a mixture of red and green light is directed onto the second chamfer 126Cb, color separation can be mitigated.

[0467] Alternatively, a backlight unit for a display device that saves on manufacturing costs can be provided. For example, since the red and green light are mixed to alleviate color separation, the phosphor 127 on the second chamfer 126Cb can be omitted.

[0468] In one embodiment, the phosphor 127 may also be provided on the second chamfered portion 126Cb. For example, a blue phosphor 127e may be provided on the second chamfered portion 126Cb. The blue phosphor 127e can absorb light mixed with red and green light and emit white light.

[0469] Will Figure 54 and Figure 52 Referring to the above, in one embodiment, a portion of the light emitted from a plurality of light sources 200g arranged in the first row Ra1 of the first substrate 122a can illuminate the first chamfered portion 126Ca. For example, colored light from a plurality of colored light-emitting regions of a plurality of first outline light sources 200xa of the first substrate 122a can illuminate the first chamfered portion 126Ca.

[0470] Each of the plurality of first outer contour light sources 200xa on the first substrate 122a may include a plurality of first outermost contour diodes. For example, each of the plurality of first outer contour light sources 200xa may include a first red light-emitting diode 211 and a blue light-emitting diode 230 that are closest to the first chamfer 126Ca and are adjacent to each other.

[0471] A plurality of first outermost contour diodes may be composed of a combination of two of the following: a first red light-emitting diode 211, a second red light-emitting diode 212, a green light-emitting diode 220, and a blue light-emitting diode 230. A portion of the plurality of first outermost contour diodes may be composed of one of the following: the first red light-emitting diode 211, the second red light-emitting diode 212, the green light-emitting diode 220, and the blue light-emitting diode 230; the remaining portion of the plurality of first outermost contour diodes may be composed of another of the following: the first red light-emitting diode 211, the second red light-emitting diode 212, the green light-emitting diode 220, and the blue light-emitting diode 230. For example, each of the plurality of first outermost contour light sources 200xa may include a plurality of first outermost contour diodes composed of the first red light-emitting diode 211 and the blue light-emitting diode 230.

[0472] A portion and the remainder of the plurality of first outermost diodes can be arranged in a mixed manner. A portion and the remainder of the plurality of first outermost diodes can be arranged alternately. For example, the first red light-emitting diode 211 and the blue light-emitting diode 230 of the first outermost light source 200xa can be arranged alternately along the x-direction.

[0473] A portion of the light emitted from the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca. Colored light from the plurality of colored emitting regions of the plurality of first outer contour light sources 200xa can illuminate the first chamfered portion 126Ca. For example, the plurality of first outermost contour diodes can be composed of a first red light-emitting diode 211 and a blue light-emitting diode 230, and a portion of the plurality of emitting regions of the first red light-emitting diode 211 and the blue light-emitting diode 230 can form a colored emitting region. Red and blue light can illuminate the first chamfered portion 126Ca.

[0474] Therefore, a backlight unit for a display device can be provided that improves color separation. For example, when a mixture of red and blue light is irradiated onto the first chamfered portion 126Ca, color separation can be alleviated.

[0475] Alternatively, a backlight unit for a display device that saves on manufacturing costs can be provided. For example, since the red and blue light are mixed to alleviate color separation, the phosphor 127 on the first chamfered portion 126Ca can be omitted.

[0476] In one embodiment, the phosphor 127 may also be provided on the first chamfered portion 126Ca. For example, a green phosphor 127d may be provided on the first chamfered portion 126Ca. The green phosphor 127d can absorb light mixed with red and blue light and emit white light.

[0477] A portion of the light emitted from the plurality of light sources 200 arranged in the first column of the first substrate 122a can illuminate the third chamfered portion 126Cc. Colored light from the plurality of colored light-emitting regions of the plurality of light sources 200g arranged in the first column of the first substrate 122a can illuminate the third chamfered portion 126Cc.

[0478] Each of the plurality of third outer contour light sources 200xc on the first substrate 122a may include a plurality of third outermost contour diodes. For example, each of the plurality of third outer contour light sources 200xc may include a first red light-emitting diode 211 and a green light-emitting diode 220 that are closest to the third chamfer 126Cc and adjacent to each other.

[0479] The plurality of third outermost contour diodes can be composed of a combination of two of the first red light-emitting diode 211, the second red light-emitting diode 212, the green light-emitting diode 220, and the blue light-emitting diode 230. A portion of the plurality of third outermost contour diodes can be composed of one of the first red light-emitting diode 211, the second red light-emitting diode 212, the green light-emitting diode 220, and the blue light-emitting diode 230, while the remaining portion of the plurality of third outermost contour diodes can be composed of another of the first red light-emitting diode 211, the second red light-emitting diode 212, the green light-emitting diode 220, and the blue light-emitting diode 230. For example, each of the plurality of third outermost contour light sources 200xc may include a plurality of third outermost contour diodes composed of the first red light-emitting diode 211 and the green light-emitting diode 220.

[0480] A portion and the remainder of the plurality of third outermost diodes can be arranged in a mixed manner. A portion and the remainder of the plurality of third outermost diodes can be arranged alternately. For example, a plurality of first red light-emitting diodes 211 and a plurality of green light-emitting diodes 220 of the plurality of third outermost light sources 200xc can be arranged alternately along the y-direction.

[0481] A portion of the light emitted from the plurality of third outer contour light sources 200xc can illuminate the third chamfered portion 126Cc. Colored light from the plurality of colored emitting regions of the plurality of third outer contour light sources 200xc can illuminate the third chamfered portion 126Cc. For example, the plurality of third outer contour diodes can be composed of a first red light-emitting diode 211 and a green light-emitting diode 220, and a portion of the plurality of emitting regions of the first red light-emitting diode 211 and the green light-emitting diode 220 can form a colored emitting region. Red and green light can illuminate the third chamfered portion 126Cc.

[0482] Therefore, a backlight unit for a display device can be provided that improves color separation. For example, when light mixed with red and green light shines onto the third chamfer 126Cc, color separation can be alleviated.

[0483] Alternatively, a backlight unit for a display device that saves on manufacturing costs can be provided. For example, since the red and green light are mixed to alleviate color separation, the phosphor 127 on the first chamfer 126Ca can be omitted.

[0484] In one embodiment, the phosphor 127 may also be provided on the third chamfered portion 126Cc. For example, a blue phosphor 127e may be provided on the third chamfered portion 126Cc. The blue phosphor 127e can absorb light mixed with red and green light and emit white light.

[0485] Reference Figure 55 and Figure 56 In one embodiment, the plurality of first outermost diodes may be composed of a combination of red light-emitting diodes 210, green light-emitting diodes 220, and blue light-emitting diodes 230. A portion of the plurality of first outermost diodes may correspond to red. Another portion of the plurality of first outermost diodes may correspond to green. The remaining portion of the plurality of first outermost diodes may correspond to blue. The number of red light-emitting diodes 210, green light-emitting diodes 220, and blue light-emitting diodes 230 in the plurality of first outermost diodes may be different from each other.

[0486] The red LED 210, green LED 220, and blue LED 230 in the plurality of first outermost diodes can be arranged randomly. For example, the red LED 210, green LED 220, and blue LED 230 in the plurality of first outermost diodes can be arranged in a mixed manner.

[0487] Therefore, a backlight unit for a display device can be provided that improves color separation. For example, when a mixture of red, green, and blue light is irradiated onto the first chamfered portion 126Ca, color separation can be alleviated.

[0488] Alternatively, a backlight unit for a display device that saves on manufacturing costs can be provided. For example, since the color separation phenomenon is alleviated by mixing red, green, and blue light, the phosphor 127 on the first chamfered portion 126Ca can be omitted.

[0489] Similarly, a plurality of second outermost diodes can be composed of a combination of red LEDs 210, green LEDs 220, and blue LEDs 230. Some of the plurality of second outermost diodes may correspond to red. Another portion of the plurality of second outermost diodes may correspond to green. The remaining portion of the plurality of second outermost diodes may correspond to blue. The number of red LEDs 210, green LEDs 220, and blue LEDs 230 in the plurality of second outermost diodes can be different from each other.

[0490] The red LED 210, green LED 220, and blue LED 230 in the plurality of second outermost diodes can be arranged randomly. For example, the red LED 210, green LED 220, and blue LED 230 in the plurality of second outermost diodes can be arranged in a mixed manner.

[0491] Therefore, a backlight unit for a display device can be provided that improves color separation. For example, when a mixture of red, green, and blue light is irradiated onto the second chamfer 126Cb, color separation can be mitigated.

[0492] Alternatively, a backlight unit for a display device that saves on manufacturing costs can be provided. For example, since the color separation phenomenon is alleviated by mixing red, green, and blue light, the phosphor 127 on the second chamfer 126Cb can be omitted.

[0493] The plurality of third outer contour light sources 200xc may include a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230. The red light-emitting diode 210, green light-emitting diode 220, and blue light-emitting diode 230 of each of the plurality of third outer contour light sources 200xc may be arranged sequentially along the column direction (e.g., the y-direction) of the matrix pattern.

[0494] The arrangement direction of the red LED 210, green LED 220, and blue LED 230 of each of the plurality of third outer contour light sources 200xc can be parallel to the length direction of the third chamfered portion 126Cc. That is, the red LED 210, green LED 220, and blue LED 230 can be arranged alternately along the length direction of the third chamfered portion 126Cc. Thus, red light, green light, and blue light can be combined to achieve white light, which can then illuminate the third chamfered portion 126Cc.

[0495] Therefore, the phosphor 127 does not need to be provided on the third chamfer 126Cc, which can provide a backlight unit for a display device that saves manufacturing costs.

[0496] In addition, color separation on the third chamfer 126Cc can be minimized even without the addition of an additional phosphor 127.

[0497] Reference Figure 57 and Figure 58 In one embodiment, the plurality of first outline light sources 200xa may include a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230. The red light-emitting diodes 210, green light-emitting diodes 220, and blue light-emitting diodes 230 of the plurality of first outline light sources 200xa may be arranged in no particular order along the row direction (e.g., the x-direction) of the matrix pattern.

[0498] The arrangement direction of the red LED 210, green LED 220, and blue LED 230 of each of the plurality of first outer contour light sources 200xa can be parallel to the length direction of the first chamfered portion 126Ca. That is, the red LED 210, green LED 220, and blue LED 230 of each of the plurality of first outer contour light sources 200xa can be arranged randomly along the length direction of the first chamfered portion 126Ca. For example, the red LED 210, green LED 220, and blue LED 230 can be arranged alternately along the length direction of the first chamfered portion 126Ca. Thus, red light, green light, and blue light can be combined to achieve white light, which can then illuminate the first chamfered portion 126Ca.

[0499] Therefore, the phosphor 127 does not need to be provided on the first chamfered portion 126Ca, which can provide a backlight unit for a display device that saves manufacturing costs.

[0500] In addition, color separation on the first chamfered portion 126Ca can be minimized even without the addition of a phosphor 127.

[0501] A plurality of third outer contour light sources 200xc may include red light-emitting diodes 210, green light-emitting diodes 220, and blue light-emitting diodes 230. The red light-emitting diodes 210, green light-emitting diodes 220, and blue light-emitting diodes 230 in each of at least a portion of the plurality of third outer contour light sources 200xc may be arranged in no particular order along the column direction (e.g., the y-direction) of the matrix pattern. For example, each of the plurality of third outer contour light sources 200xc, excluding the corner light source 200xe, may include red light-emitting diodes 210, green light-emitting diodes 220, and blue light-emitting diodes 230 arranged sequentially along the y-direction.

[0502] The arrangement direction of the red LED 210, green LED 220, and blue LED 230 of each of the plurality of third outer contour light sources 200xc can be parallel to the length direction of the third chamfered portion 126Cc. That is, the red LED 210, green LED 220, and blue LED 230 of each of the plurality of third outer contour light sources 200xc can be arranged randomly along the length direction of the third chamfered portion 126Cc. For example, the red LED 210, green LED 220, and blue LED 230 can be arranged alternately along the length direction of the third chamfered portion 126Cc. Thus, red light, green light, and blue light can be combined to achieve white light, which can then illuminate the third chamfered portion 126Cc.

[0503] Therefore, the phosphor 127 does not need to be provided on the third chamfer 126Cc, which can provide a backlight unit for a display device that saves manufacturing costs.

[0504] In addition, color separation on the third chamfer 126Cc can be minimized even without the addition of a phosphor 127.

[0505] The corner light source 200xe may include a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230. The red light-emitting diodes 210, green light-emitting diodes 220, and blue light-emitting diodes 230 of the corner light source 200xe may be arranged randomly along the row direction (e.g., the x-direction) of the matrix pattern. For example, the corner light source 200xe may include red light-emitting diodes 210, green light-emitting diodes 220, and blue light-emitting diodes 230 arranged sequentially along the x-direction.

[0506] The corner light source 200xe may include a corner diode corresponding to one of the red light-emitting diode 210, green light-emitting diode 220, and blue light-emitting diode 230 and closest to the third chamfer 126Cc. For example, the red light-emitting diode 210 of the corner light source 200xe may be closest to the third chamfer 126Cc. One of the red light-emitting diode 210, green light-emitting diode 220, and blue light-emitting diode 230 of the corner light source 200xe may form a colored light-emitting area. For example, the corner diode of the corner light source 200xe may correspond to the red light-emitting diode 210, and the red light-emitting diode 210 may form a red colored light-emitting area. The red light from the colored light-emitting area may illuminate the end of the third chamfer 126Cc adjacent to the corner of the reflector 126.

[0507] A phosphor 127 can be provided at the end of the third chamfered portion 126Cc adjacent to the corner of the reflector 126. For example, a cyan phosphor 127b can be provided at the end of the third chamfered portion 126Cc, and the cyan phosphor 127b can face the corner light source 200xe. The cyan phosphor 127 can absorb red light from the colored emitting region and emit white light.

[0508] However, in one embodiment, depending on the characteristics of the protective lenses 240 and 250, the light irradiated onto the third chamfered portion 126Cc adjacent to the corner of the reflector 126 can be different. For example, depending on the characteristics of the protective lens 240, the arrangement of the plurality of light-emitting regions can be formed in the opposite direction to the arrangement of the plurality of light-emitting diodes. Thus, a colored light-emitting region of the blue light-emitting diode 230 located inside the light source 200 can be formed, and the blue light from the colored light-emitting region can also irradiate the end of the third chamfered portion 126Cc adjacent to the corner of the reflector 126. A yellow phosphor can be provided on the corner of the reflector 126. The yellow phosphor can absorb blue light and emit white light.

[0509] In another embodiment, based on the characteristics of the protective lenses 240 and 250, a colored light-emitting region of the green light-emitting diode 220 located at the center of the light source 200 can be formed, and the green light from the colored light-emitting region can also illuminate the corner of the reflector 126. A magenta phosphor can also be provided at the corner of the reflector 126. The magenta phosphor can absorb green light and emit white light.

[0510] Will Figure 59 and Figure 58 For reference, the corner light source 200xe can be rotated to be tilted. For example, the corner light source 200xe configured in the first row Ro1 and the first column Co1 of the matrix pattern can be rotated approximately 45 degrees counterclockwise.

[0511] The corner light source 200xe may include a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230.

[0512] The red LED 210, green LED 220, and blue LED 230 of the corner light source 200xe can be arranged randomly along directions intersecting the row and column directions of the matrix pattern. For example, the corner light source 200xe may include red LED 210, green LED 220, and blue LED 230 arranged sequentially along the xy direction. Thus, red light, green light, and blue light can be combined to achieve white light, which can illuminate the corner of the reflector 126.

[0513] Therefore, the phosphor 127 does not need to be provided at the corner of the reflector 126, which can provide a backlight unit for a display device that saves manufacturing costs.

[0514] In addition, color separation at the corners of the reflective sheet 126 can be minimized without the need for an additional phosphor 127.

[0515] Reference Figure 60At least a portion of the plurality of peripheral light sources 200x may each be composed of one of a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230. At least a portion of the plurality of peripheral light sources 200x may not include the remaining light-emitting diodes among the red, green, and blue light-emitting diodes 230. For example, at least a portion of the plurality of peripheral light sources 200x may be composed of a blue light-emitting diode 230.

[0516] A phosphor 127 may be provided on the chamfered portion 126C. For example, a yellow phosphor 127a may be provided on the chamfered portion 126C, and the yellow phosphor 127a may face a plurality of outer contour light sources 200x. The yellow phosphor 127a may absorb blue light from the colored emitting region and emit white light.

[0517] This ensures that the color of the light shone onto the chamfered portion 126C is uniform.

[0518] In addition, it can minimize color separation on the chamfered portion 126C.

[0519] Each of the plurality of inner light sources 200n may include a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230.

[0520] This improves the white light performance of the backlight unit 120 for display devices.

[0521] Alternatively, a backlight unit 120 for a display device that can improve image quality can be provided.

[0522] Alternatively, a backlight unit 120 for a display device that can improve color performance can be provided.

[0523] Alternatively, a backlight unit 120 for a display device that can improve brightness can be provided.

[0524] Alternatively, a backlight unit 120 for a display device that can improve the sense of depth can be provided.

[0525] Alternatively, a backlight unit 120 for a display device can be provided that can improve color separation phenomena.

[0526] Alternatively, a backlight unit 120 for a display device that can expand the viewing angle can be provided.

[0527] Will Figure 61 and Figure 60Referring together, in one embodiment, at least a portion of the plurality of first outer contour light sources 200xa may each include a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230. The red light-emitting diode 210, green light-emitting diode 220, and blue light-emitting diode 230 in each of the plurality of first outer contour light sources 200xa may be arranged randomly along the row direction (e.g., the x-direction) of the matrix pattern. For example, each of the plurality of first outer contour light sources 200xa, excluding the corner light source 200xe, may include a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230 arranged sequentially along the x-direction.

[0528] At least a portion of the red LEDs 210, green LEDs 220, and blue LEDs 230 of each of the plurality of first outer contour light sources 200xa can be arranged parallel to the length direction of the first chamfered portion 126Ca. That is, at least a portion of the red LEDs 210, green LEDs 220, and blue LEDs 230 of each of the plurality of first outer contour light sources 200xa can be arranged randomly along the length direction of the first chamfered portion 126Ca. For example, the red LEDs 210, green LEDs 220, and blue LEDs 230 of each of the plurality of first outer contour light sources 200xa, excluding the corner light source 200xe, can be arranged along the length direction of the first chamfered portion 126Ca. Thus, red light, green light, and blue light can be combined to achieve white light, which can then illuminate a portion of the first chamfered portion 126Ca.

[0529] Therefore, the phosphor 127 does not need to be provided on a part of the first chamfered portion 126Ca, which can provide a backlight unit for a display device that saves manufacturing costs.

[0530] In addition, without the presence of an additional phosphor 127, color separation on a portion of the first chamfered portion 126Ca can be minimized.

[0531] Each of at least a portion of the plurality of third outer contour light sources 200xc may include a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230. The red light-emitting diode 210, green light-emitting diode 220, and blue light-emitting diode 230 in each of the plurality of third outer contour light sources 200xc may be arranged randomly along the column direction (e.g., the y-direction) of the matrix pattern. For example, each of the plurality of third outer contour light sources 200xc, excluding the corner light source 200xe, may include a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230 arranged sequentially along the y-direction.

[0532] At least a portion of the red LEDs 210, green LEDs 220, and blue LEDs 230 of the plurality of third outer contour light sources 200xc can be arranged parallel to the length direction of the third chamfered portion 126Cc. That is, at least a portion of the red LEDs 210, green LEDs 220, and blue LEDs 230 of the plurality of third outer contour light sources 200xc can be arranged randomly along the length direction of the third chamfered portion 126Cc. For example, the red LEDs 210, green LEDs 220, and blue LEDs 230 of the plurality of third outer contour light sources 200xc, excluding the corner light source 200xe, can be arranged along the length direction of the third chamfered portion 126Cc. Thus, red light, green light, and blue light can be combined to achieve white light, which can then illuminate a portion of the third chamfered portion 126Cc.

[0533] Therefore, the phosphor 127 does not need to be provided on a portion of the third chamfer 126Cc, which can provide a backlight unit for a display device that saves manufacturing costs.

[0534] In addition, without the presence of an additional phosphor 127, color separation on a portion of the third chamfer 126Cc can be minimized.

[0535] The corner light source 200xe may include only one of a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230. The corner light source 200xe may not include the remaining light-emitting diodes among the red, green, and blue light-emitting diodes 230. For example, the corner light source 200xe may include only the blue light-emitting diode 230.

[0536] A phosphor 127 can be provided at the corner of the chamfered portion 126C. For example, a yellow phosphor 127a can be provided at the corner of the chamfered portion 126C, and the yellow phosphor 127a can face the corner light source 200xe. The yellow phosphor 127a can absorb the blue light from the colored emitting region and emit white light.

[0537] This ensures that the color of light shining on the corner of the chamfered portion 126C is uniform.

[0538] In addition, it can minimize color separation at the corners of the chamfered portion 126C.

[0539] Alternatively, a backlight unit 120 for a display device that can improve image quality can be provided.

[0540] Alternatively, a backlight unit 120 for a display device that can improve color performance can be provided.

[0541] Alternatively, a backlight unit 120 for a display device that can improve brightness can be provided.

[0542] Alternatively, a backlight unit 120 for a display device that can improve the sense of depth can be provided.

[0543] Alternatively, a backlight unit 120 for a display device can be provided that can improve color separation phenomena.

[0544] Alternatively, a backlight unit 120 for a display device that can expand the viewing angle can be provided.

[0545] Reference Figures 1 to 61 The backlight unit 120 for the display device includes: a plurality of light sources 200 arranged in a matrix pattern on at least one substrate 122, each of the plurality of light sources 200 including a red light-emitting diode 210 (LED), a green light-emitting diode 220, and a blue light-emitting diode 230; a frame 130 for accommodating the substrate 122, the frame 130 including a receiving portion 131 for arranging the substrate 122 and a side portion 133 extending obliquely from the edge of the receiving portion 131; a reflective sheet 126 covering the substrate 122, the reflective sheet 126 including a central portion 126P covering the substrate 122 and a chamfered portion 126C covering the side portion; and a phosphor 127 located on the chamfered portion 126C.

[0546] The plurality of light sources 200 may include a plurality of first outline light sources 200xa arranged in the first row Ro1 of the matrix pattern.

[0547] The red LED 210, green LED 220, and blue LED 230 of each of the plurality of first outer contour light sources 200xa can be arranged in no particular order along the column direction of the matrix pattern.

[0548] The chamfered portion 126C may include a first chamfered portion 126Ca that extends elongated along the row direction of the matrix pattern and is adjacent to the first row Ro1 of the matrix pattern.

[0549] The phosphor 127 can be provided on the first chamfered portion 126Ca.

[0550] Each of the plurality of first outer contour light sources 200xa may include a first outermost contour diode corresponding to the red light-emitting diode 210, green light-emitting diode 220 or blue light-emitting diode 230 and closest to the chamfer portion 126C.

[0551] The plurality of the first outermost diodes may be composed of one of the red light-emitting diode 210, the green light-emitting diode 220 and the blue light-emitting diode 230.

[0552] Each of the plurality of first outer contour light sources 200xa includes a first outermost contour diode corresponding to the red light-emitting diode 210, green light-emitting diode 220, or blue light-emitting diode 230 and closest to the chamfer portion 126C; a portion of the plurality of first outermost contour diodes may be composed of one of the red light-emitting diode 210, green light-emitting diode 220, and blue light-emitting diode 230, and another portion of the plurality of first outermost contour diodes may be composed of another of the red light-emitting diode 210, green light-emitting diode 220, and blue light-emitting diode 230.

[0553] The phosphor 127 may include: a first phosphor provided on a portion of the first chamfer 126Ca adjacent to the first outermost diode in a plurality of the first outermost diodes; and a second phosphor, unlike the first phosphor, provided on another portion of the first chamfer 126Ca adjacent to the other portion in a plurality of the first outermost diodes.

[0554] The plurality of light sources 200 may also include a plurality of second outer contour light sources 200xb arranged in the last row RoN of the matrix pattern.

[0555] The red LED 210, green LED 220, and blue LED 230 of each of the plurality of second outer contour light sources 200xb can be arranged in no particular order along the column direction of the matrix pattern.

[0556] The chamfered portion 126C may include a second chamfered portion 126Cb that extends elongated along the row direction of the matrix pattern and is adjacent to the last row RoN of the matrix pattern.

[0557] Each of the plurality of second outer contour light sources 200xb may include a second outermost contour diode corresponding to the red light-emitting diode 210, green light-emitting diode 220 or blue light-emitting diode 230 and closest to the second chamfer portion 126Cb.

[0558] The plurality of second outermost diodes may be composed of one of the red light-emitting diode 210, the green light-emitting diode 220 and the blue light-emitting diode 230.

[0559] The phosphor 127 may also be provided on the second chamfered portion 126Cb.

[0560] The plurality of light sources 200 further include a plurality of second outer contour light sources 200xb arranged in the last row RoN of the matrix pattern. The red light-emitting diodes 210, green light-emitting diodes 220, and blue light-emitting diodes 230 of each of the plurality of second outer contour light sources 200xb are arranged randomly along the column direction of the matrix pattern. The chamfered portion 126C includes a second chamfered portion 126Cb that extends long along the row direction of the matrix pattern and is adjacent to the last row RoN of the matrix pattern. Each of the plurality of second outer contour light sources 200xb includes a second outermost contour diode that corresponds to the red light-emitting diode 210, green light-emitting diode 220, or blue light-emitting diode 230 and is closest to the second chamfered portion 126Cb. The plurality of second outermost contour diodes may be composed of another one of the red light-emitting diode 210, green light-emitting diode 220, and blue light-emitting diode 230.

[0561] The phosphor 127 may include a first phosphor on the first chamfered portion 126Ca and a second phosphor that is different from the first phosphor and is located on the second chamfered portion 126Cb.

[0562] The plurality of light sources 200 may include a plurality of third outer contour light sources 200xc arranged in the first column Co1 of the matrix pattern.

[0563] The red LED 210, green LED 220, and blue LED 230 of each of the plurality of third outer contour light sources 200xc can be arranged in no particular order along the row direction of the matrix pattern.

[0564] The chamfered portion 126C may further include a third chamfered portion 126Cc that extends long along the column direction of the matrix pattern and is adjacent to the first column Co1 of the matrix pattern.

[0565] Each of the plurality of third outer contour light sources 200xc may include a third outermost contour diode corresponding to the red light-emitting diode 210, green light-emitting diode 220 or blue light-emitting diode 230 and closest to the third chamfer portion 126Cc.

[0566] The plurality of the third outermost diodes may be composed of one of the red light-emitting diode 210, the green light-emitting diode 220 and the blue light-emitting diode 230.

[0567] The phosphor 127 may also be provided on the third chamfered portion 126Cc.

[0568] The plurality of light sources 200 also include a plurality of third outer contour light sources 200xc arranged in the first column Co1 of the matrix pattern, wherein the red light-emitting diodes 210, green light-emitting diodes 220 and blue light-emitting diodes 230 of each of the plurality of third outer contour light sources 200xc can be arranged in no particular order along the column direction of the matrix pattern.

[0569] The plurality of light sources 200 may also include a plurality of corner light sources 200xe disposed at the four corners of the matrix pattern.

[0570] The red LED 210, green LED 220, and blue LED 230 of each of the plurality of corner light sources 200xe can be arranged in no particular order along directions intersecting the row and column directions of the matrix pattern.

[0571] Each of the plurality of corner light sources 200xe may include a corner diode corresponding to the red light-emitting diode 210, green light-emitting diode 220 or blue light-emitting diode 230 and closest to the corner of the reflector 126.

[0572] The plurality of said corner diodes may be composed of one of the red light-emitting diode 210, the green light-emitting diode 220 and the blue light-emitting diode 230.

[0573] Reference Figures 1 to 61 The backlight unit 120 for the display device includes: a plurality of light sources 200 arranged in a matrix pattern on a substrate 122, each of the plurality of light sources 200 including a red light-emitting diode 210. The matrix pattern includes a red LED, a green LED 220, and a blue LED 230; a frame 130 for housing the substrate 122, the frame 130 including a receiving portion 131 for arranging the substrate 122 and a side portion 133 extending obliquely from the edge of the receiving portion 131; a reflector 126 having a central portion 126P covering the substrate 122 and a chamfered portion 126C covering the side portion 133; a plurality of light sources 200 including a plurality of first outline light sources 200xa arranged in the first row Ro1 of the matrix pattern and a plurality of second outline light sources 200xb arranged in the last row RoN of the matrix pattern, wherein at least a portion of the red LED 210, green LED 220, and blue LED 230 of the first outline light sources 200xa and the second outline light sources 200xb can be arranged randomly along the row direction of the matrix pattern.

[0574] The plurality of light sources 200 may further include a plurality of third outer contour light sources 200xc arranged in the first column Co1 of the matrix pattern.

[0575] At least a portion of the red LEDs 210, green LEDs 220, and blue LEDs 230 of each of the plurality of third outer contour light sources 200xc can be arranged in no particular order along the column direction of the matrix pattern.

[0576] The plurality of light sources 200 may also include a plurality of corner light sources 200xe disposed at the four corners of the matrix pattern.

[0577] The red LED 210, green LED 220, and blue LED 230 of each of the plurality of corner light sources 200xe can be arranged in no particular order along directions intersecting the row and column directions of the matrix pattern.

[0578] The plurality of light sources 200 further include a plurality of third outer contour light sources 200xc arranged in the first column Co1 of the matrix pattern. The red light-emitting diodes 210, green light-emitting diodes 220 and blue light-emitting diodes 230 of each of the plurality of third outer contour light sources 200xc are arranged in no particular order along the row direction of the matrix pattern. Each of the plurality of third outer contour light sources 200xc may include the third outermost contour diode closest to the chamfer 126C.

[0579] A portion of the plurality of third outermost diodes may be composed of one of the red light-emitting diode 210, the green light-emitting diode 220, and the blue light-emitting diode 230, and another portion of the plurality of third outermost diodes may be composed of another of the red light-emitting diode 210, the green light-emitting diode 220, and the blue light-emitting diode 230.

[0580] It may also include a phosphor 127 provided on a portion of the chamfered portion 126C adjacent to the first column Co1 of the matrix pattern.

[0581] The portion and the other portion of the plurality of second outermost diodes can be arranged randomly.

[0582] The remaining portion of the plurality of second outermost diodes may be composed of one of the remaining red light-emitting diode 210, green light-emitting diode 220 and blue light-emitting diode 230.

[0583] Reference Figures 1 to 61The backlight unit 120 for the display device includes: a plurality of light sources 200 arranged in a matrix pattern on at least one substrate 122; a frame 130 for housing the substrate 122, the frame 130 including a receiving portion 131 for arranging the substrate 122 and a side portion 133 extending obliquely from the edge of the receiving portion 131; a reflective sheet 126 covering the substrate 122, the reflective sheet 126 including a central portion 126P covering the substrate 122 and a chamfered portion 126C covering the side portion; and a phosphor 127 located on the chamfered portion 126C; the plurality of light sources 200 may include: a plurality of outer contour light sources 200x arranged in the matrix pattern in a first row Ro1, a last row RoN, a first column Co1, and a last column CoN; and a plurality of inner light sources 200n, including red light-emitting diodes 210. LED, green LED 220 and blue LED 230, are surrounded by a plurality of said outer contour light sources 200x.

[0584] At least a portion of the plurality of said outer contour light sources 200x may be composed of one of a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230.

[0585] The plurality of said outer contour light sources 200x may include a plurality of corner light sources 200xe disposed at the four corners of the plurality of said matrix patterns.

[0586] The plurality of corner light sources 200xe may be composed of one of the following: a red light-emitting diode 210, a green light-emitting diode 220, and a blue light-emitting diode 230.

[0587] The remainder of the plurality of said outer contour light sources 200x may include the red light-emitting diode 210, the green light-emitting diode 220, and the blue light-emitting diode 230.

[0588] The foregoing embodiments or other embodiments of the present invention are not mutually exclusive or distinct from each other. The respective configurations or functions of any of the foregoing embodiments or other embodiments of the present invention may be used in combination or together.

[0589] For example, this means that configuration A illustrated in a particular embodiment and / or drawing can be combined with configuration B illustrated in other embodiments and / or drawings. That is, even if the combination between configurations is not directly described, it is implied that they can be combined unless explicitly stated that they cannot be combined.

[0590] The detailed description above should not be construed as restrictive in all respects, but rather as exemplary. The scope of the invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the invention fall within its scope.

Claims

1. A backlight unit for a display device, wherein, include: A plurality of light sources are arranged in a matrix pattern on at least one substrate, each of the plurality of light sources comprising a red light-emitting diode, a green light-emitting diode, and a blue light-emitting diode; A frame for accommodating the substrate, the frame including a receiving portion for accommodating the substrate and a side portion extending obliquely from an edge of the receiving portion; A reflective sheet covering the substrate, the reflective sheet including a central portion covering the substrate and chamfered portions covering the sides; as well as A phosphor is located on the chamfered portion.

2. The backlight unit for a display device according to claim 1, wherein, The plurality of light sources includes a plurality of first outline light sources arranged in the first row of the matrix pattern; The red, green, and blue light-emitting diodes of each of the plurality of first outer contour light sources are arranged in no particular order along the column direction of the matrix pattern; The chamfered portion includes a first chamfered portion, which extends elongated along the row direction of the matrix pattern and is adjacent to the first row of the matrix pattern; The phosphor is provided on the first chamfered portion.

3. The backlight unit for a display device according to claim 2, wherein, Each of the plurality of first outer contour light sources includes a first outermost contour diode, the first outermost contour diode corresponding to the red light-emitting diode or the green light-emitting diode or the blue light-emitting diode and being closest to the chamfer portion; The plurality of the first outermost diodes are composed of one of the red light-emitting diode, the green light-emitting diode, and the blue light-emitting diode.

4. The backlight unit for a display device according to claim 2, wherein, Each of the plurality of first outer contour light sources includes a first outermost contour diode, the first outermost contour diode corresponding to the red light-emitting diode or the green light-emitting diode or the blue light-emitting diode and being closest to the chamfer portion; A portion of the plurality of the first outermost diodes is composed of one of the red light-emitting diode, the green light-emitting diode, and the blue light-emitting diode; Another portion of the plurality of the first outermost diodes is composed of another of the red light-emitting diode, the green light-emitting diode, and the blue light-emitting diode.

5. The backlight unit for a display device according to claim 4, wherein, The phosphor includes: A first phosphor is provided on a portion of the first chamfer adjacent to a portion of a plurality of the first outermost diodes; and The second phosphor, unlike the first phosphor, is provided on another portion of the first chamfered portion adjacent to another portion of the plurality of first outermost diodes.

6. The backlight unit for a display device according to claim 3, wherein, The plurality of light sources further includes a plurality of second outer contour light sources arranged in the last row of the matrix pattern; The red, green, and blue light-emitting diodes of each of the plurality of second outer contour light sources are arranged in no particular order along the column direction of the matrix pattern; The chamfered portion further includes a second chamfered portion, which extends elongated along the row direction of the matrix pattern and is adjacent to the last row of the matrix pattern; Each of the plurality of second outer contour light sources includes a second outermost contour diode, the second outermost contour diode corresponding to the red light-emitting diode or the green light-emitting diode or the blue light-emitting diode and being closest to the second chamfer portion; The plurality of second outermost diodes are composed of one of the red light-emitting diode, the green light-emitting diode, and the blue light-emitting diode; The phosphor is also provided on the second chamfered portion.

7. The backlight unit for a display device according to claim 3, wherein, The plurality of light sources further includes a plurality of second outer contour light sources arranged in the last row of the matrix pattern; The red, green, and blue light-emitting diodes of each of the plurality of second outer contour light sources are arranged in no particular order along the column direction of the matrix pattern; The chamfered portion further includes a second chamfered portion, which extends elongated along the row direction of the matrix pattern and is adjacent to the last row of the matrix pattern; Each of the plurality of second outer contour light sources includes a second outermost contour diode, the second outermost contour diode corresponding to the red light-emitting diode or the green light-emitting diode or the blue light-emitting diode and being closest to the second chamfer portion; The plurality of second outermost diodes are composed of another one of the red light-emitting diode, the green light-emitting diode, and the blue light-emitting diode; The phosphor includes: The first phosphor is located on the first chamfered portion; as well as The second phosphor, unlike the first phosphor, is located on the second chamfered portion.

8. The backlight unit for a display device according to claim 3, wherein, The plurality of light sources further includes a plurality of third outer contour light sources arranged in the first column of the matrix pattern; The red, green, and blue LEDs of each of the plurality of third outer contour light sources are arranged in no particular order along the row direction of the matrix pattern; The chamfered portion further includes a third chamfered portion, which extends long along the column direction of the matrix pattern and is adjacent to the first column of the matrix pattern; Each of the plurality of third outer contour light sources includes a third outermost contour diode, wherein the third outermost contour diode corresponds to the red light-emitting diode or the green light-emitting diode or the blue light-emitting diode and is closest to the third chamfer portion; The plurality of the third outermost diodes are composed of one of the red light-emitting diode, the green light-emitting diode, and the blue light-emitting diode; The phosphor is also provided on the third chamfered portion.

9. The backlight unit for a display device according to claim 2, wherein, The plurality of light sources further includes a plurality of third outer contour light sources arranged in the first column of the matrix pattern; The red, green, and blue light-emitting diodes of each of the plurality of third outer contour light sources are arranged in no particular order along the column direction of the matrix pattern.

10. The backlight unit for a display device according to claim 2, wherein, The plurality of light sources also includes a plurality of corner light sources disposed at the four corners of the matrix pattern; The red, green, and blue LEDs of each of the plurality of corner light sources are arranged in no particular order along directions that intersect the row and column directions of the matrix pattern.

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