KR102650101B1 - Display device - Google Patents

Abstract

A display device is disclosed. The display device of the present disclosure includes: a display panel; an optical assembly providing light to the display panel; a light absorption layer located on an optical path provided from the optical assembly to the display panel and absorbing light of a certain range of wavelengths; an optical plate facing the display panel with respect to the light absorption layer; a guide panel extending along the periphery of the optical plate; a guide panel including a vertical portion covering the circumference of the optical plate and a horizontal portion extending from the vertical portion between the display panel and the light absorption layer; And, it may include a first pad located between the horizontal portion and the light absorption layer, coupled to the horizontal portion, and adjacent to or in contact with the front surface of the light absorption layer, wherein the first pad is: a fluorescent layer with a phosphor. may include.

Description

Display device {DISPLAY DEVICE}

This disclosure relates to display devices.

As the information society develops, the demand for display devices in various forms is increasing, and in response to this, in recent years, LCD (Liquid Crystal Display Device), PDP (Plasma Display Panel), ELD (Electro luminescent display), and VFD (Vacuum Fluorescent) have been developed. Various display devices such as OLED (Organic Light Emitting Diode) and OLED (Organic Light Emitting Diode) are being researched and used.

Among these, the LCD panel has a TFT substrate and a color substrate that face each other with a liquid crystal layer in between, and can display images using light provided from a backlight unit.

Recently, as interest in the image quality of display devices increases, color expression or color reproduction close to natural colors (true colors) is receiving important attention, and much research is being conducted on improving image quality to realize natural colors.

The present disclosure aims to solve the above-described problems and other problems.

Another purpose may be to provide a display device that can improve image quality.

Another purpose may be to provide a display device that can improve color gamut.

Another purpose may be to provide a display device that can minimize color differences between the center and the outside of the display panel.

Another purpose may be to provide a display device that can improve the formation of blue bands on the outer edge of a display panel.

According to one aspect of the present disclosure for achieving the above or other objects, a display device includes: a display panel; an optical assembly providing light to the display panel; a light absorption layer located on an optical path provided from the optical assembly to the display panel and absorbing light of a certain range of wavelengths; an optical plate facing the display panel with respect to the light absorption layer; a guide panel extending along the periphery of the optical plate; a guide panel including a vertical portion covering the circumference of the optical plate and a horizontal portion extending from the vertical portion between the display panel and the light absorption layer; And, it may include a first pad located between the horizontal portion and the light absorption layer, coupled to the horizontal portion, and adjacent to or in contact with the front surface of the light absorption layer, wherein the first pad is: a fluorescent layer with a phosphor. may include.

The effects of the display device according to the present disclosure will be described as follows.

According to at least one of the embodiments of the present disclosure, a display device capable of improving image quality can be provided.

According to at least one of the embodiments of the present disclosure, a display device capable of improving color gamut can be provided.

According to at least one of the embodiments of the present disclosure, a display device capable of minimizing color differences between the center and the outer portion of a display panel can be provided.

According to at least one of the embodiments of the present disclosure, a display device capable of improving the formation of a blue band on the outer portion of a display panel can be provided.

Additional scope of applicability of the present disclosure will become apparent from the detailed description that follows. However, since various changes and modifications within the spirit and scope of the present disclosure may be clearly understood by those skilled in the art, the detailed description and specific embodiments such as preferred embodiments of the present disclosure should be understood as being given only as examples.

1 to 19 are diagrams showing examples of display devices according to embodiments of the present disclosure.

Hereinafter, embodiments disclosed in the present specification will be described in detail with reference to the attached drawings. However, identical or similar components will be assigned the same reference numbers regardless of reference numerals, and duplicate descriptions thereof will be omitted.

The suffixes “module” and “part” for components used in the following description are given or used interchangeably only for the ease of preparing the specification, and do not have distinct meanings or roles in themselves.

Additionally, in describing the embodiments disclosed in this specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed descriptions will be omitted. In addition, the attached drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the attached drawings, and all changes included in the spirit and technical scope of the present disclosure are not limited. , should be understood to include equivalents or substitutes.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

The direction indications of up (U), down (D), left (Le), right (Ri), front (F), and back (R) shown in the drawings are only for convenience of explanation, and are hereby used in this specification. The disclosed technical idea is not limited.

Referring to FIG. 1, the display device 1 may include a display panel 10. The display panel 10 can display a screen.

The display device 1 has a first long side (LS1), a second long side (LS2) opposite the first long side (LS1), a first long side (LS1), and a second long side (LS2). It may include a first short side (SS1) adjacent to and a second short side (SS2) opposite the first short side (SS1). Meanwhile, for convenience of explanation, the lengths of the first and second long sides LS1 and LS2 are shown and described as being longer than the lengths of the first and second short sides SS1 and SS2. It may be possible that the length of (LS1, LS2) is approximately the same as the length of the first and second short sides (SS1, SS2).

The direction parallel to the long sides (LS1, LS2) of the display device 1 may be referred to as the left and right direction or the first direction DR1. The direction parallel to the short sides (SS1, SS2) of the display device 1 may be referred to as the vertical direction or the second direction DR2. The direction perpendicular to the long sides (LS1, LS2) and short sides (SS1, SS2) of the display device 1 may be referred to as the front-back direction or the third direction DR3.

The direction in which the display panel 10 displays images may be referred to as the front (F, z), and the opposite direction may be referred to as the rear (R). The first long side (LS1) can be called the upper side (U, y). The second long side (LS2) can be called the lower side (D). The first short side (SS1) can be referred to as the left side (Le, x). The second short side (SS2) can be called the right side (Ri).

The first long side (LS1), the second long side (LS2), the first short side (SS1), and the second short side (SS2) may be referred to as edges of the display device 1. Additionally, the point 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 may be called a corner.

For example, the point where the first short side SS1 and the first long side LS1 meet may be referred to as the first corner C1. The point where the first long side (LS1) and the second short side (SS2) meet may be referred to as the second corner (C2). The point where the second short side (SS2) and the second long side (LS2) meet may be referred to as the third corner (C3). The point where the second long side (LS2) and the first short side (SS1) meet may be referred to as the fourth corner (C4).

Referring to FIG. 2, the display device 1 includes a display panel 10, a front cover 15, a guide panel 13, a backlight unit 20, a frame 60, and a back cover 70. You can.

The display panel 10 can form the front of the display device 1 and can display images. The display panel 10 can display an image by having a plurality of pixels output RGB (Red, Green or Blue) for each pixel in accordance with the timing. The display panel 10 can be divided into an active area where an image is displayed and a de-active area where an image is not displayed. The display panel 10 may include a front substrate and a rear substrate that face each other with a liquid crystal layer interposed therebetween. The display panel 10 may be referred to as an LCD panel.

The front substrate may include a plurality of pixels consisting of red, green, and blue subpixels. The front board can output light corresponding to the colors of red, green, or blue depending on the control signal.

The rear substrate may include switching elements. The rear substrate can switch pixel electrodes. For example, the pixel electrode can change the molecular arrangement of the liquid crystal layer according to an externally input control signal. The liquid crystal layer may include liquid crystal molecules. The arrangement of liquid crystal molecules can change in response to the voltage difference generated between the pixel electrode and the common electrode. The liquid crystal layer may transmit light provided from the backlight unit 20 to the front substrate or block it.

The front cover 15 may cover at least a portion of the front and side areas of the display panel 10. The front cover 15 can be divided into a front cover located on the front of the display panel 10 and a side cover located on the side. The front cover and the side cover may be provided separately or may be provided as one body. At least one of the front cover or the side cover may be omitted. The front cover 15 can be referred to as a case top.

The guide panel 13 may surround the periphery of the display panel 10 and cover the side of the display panel 10. The guide panel 13 may be coupled to the display panel 10 or may support the display panel 10. The guide panel 13 may be coupled to or fixed to the frame 60. The guide panel 13 may be referred to as a panel guide or side frame.

The backlight unit 20 may be located behind the display panel 10. The backlight unit 20 may include light sources. The backlight unit 20 may be coupled to the frame 60 from the front of the frame 60. The backlight unit 20 may be driven in a full driving method or a partial driving method such as local dimming or impulsive driving. The backlight unit 20 may include an optical sheet 40 and an optical layer 30.

The optical sheet 40 can evenly transmit light from the light source to the display panel 10. The optical sheet 40 may be composed of a plurality of layers. For example, the optical sheet 40 may include a prism sheet or a diffusion sheet. For example, the optical sheet 40 may be a double brightness enhancement film (DBEF). Meanwhile, the coupling portion 40d of the optical sheet 40 may be coupled to the front cover 15, the frame 60, or the back cover 70.

The frame 60 may be located behind the backlight unit 20 and may support the components of the display device 1. For example, a backlight unit 20, a PCB (Printed Circuit Board) on which a plurality of electronic devices are located, etc. may be coupled to the frame 60. The frame 60 may include a metal material such as aluminum alloy. Frame 60 may be referred to as a main frame or module cover.

The back cover 70 may cover the rear of the frame 60. The back cover 70 may be coupled to the frame 60 and/or the front cover 15. For example, the back cover 70 may be an injection molded product made of resin. For another example, the back cover 70 may include a metal material.

Referring to FIG. 3, the backlight unit 20 may include an optical layer 30 and an optical sheet 40. The optical layer 30 may be located between the frame 60 and the display panel 10. The optical layer 30 may be supported by the frame 60 . The optical layer 30 may include a substrate 32, at least one light source 34, a reflective sheet 37, and a light guide plate 38.

The light guide plate 38 may be located between the frame 60 and the optical sheet 40 and may be supported by the frame 60. The light guide plate 38 may be referred to as an optical plate 38.

The substrate 32 may be adjacent to the circumference of the light guide plate 38 and may be coupled to one side of the guide panel 13. For example, the substrate 32 may be adjacent to the lower side of the light guide plate 38. The substrate 32 may be made of at least one of polyethylene terephthalate (PET), glass, polycarbonate (PC), or silicon. The substrate 32 may be a printed circuit board (PCB).

At least one light source 34 may be mounted on the substrate 32. The plurality of light sources 34 may be spaced apart from each other on the substrate 32 . An electrode pattern for connecting the adapter and the light source 34 may be formed on the substrate 32. For example, a carbon nanotube electrode pattern for connecting the light source 34 and the adapter may be formed on the substrate 32.

For example, the light source 34 may be a light emitting diode (LED) chip or a light emitting diode package including at least one light emitting diode chip. The light source 34 may be a colored LED that emits at least one color such as red, green, blue, etc., or may be composed of a white LED. The colored LED may include at least one of a red LED, a green LED, or a blue LED. The light source 34 may be referred to as a light assembly 34.

The reflective sheet 37 may be positioned between the frame 60 and the light guide plate 38 and may be supported by the frame 60. The reflective sheet 37 may include at least one of metal or metal oxide, which is a reflective material. For example, the reflective sheet 37 may include a metal and/or metal oxide having a high reflectivity, such as at least one of aluminum (Al), silver (Ag), gold (Au), or titanium dioxide (TiO2). You can.

The optical sheet 40 may be located in front of the light guide plate 38. The back of the optical sheet 40 may be in close contact with the light guide plate 38, and the front of the optical sheet 40 may be in close contact with or adjacent to the back of the display panel 10. The optical sheet 40 may include at least one sheet.

For example, the optical sheet 40 may include a plurality of sheets with different functions. The first optical sheet 40a may be a diffusion sheet, and the second optical sheet 40b and the third optical sheet 40c may be prism sheets. The diffusion sheet prevents the light coming from the light guide plate 38 from being partially concentrated, thereby making the distribution of light more uniform. The prism sheet can condense the light coming from the light guide plate 38 and provide it to the display panel 10. Meanwhile, the number and/or location of the diffusion sheet and the prism sheet may be changed.

The coupling portion 40d may be formed on at least one edge of the optical sheet 40. The coupling portion 40d may be formed on at least one of the first optical sheet 40a, the second optical sheet 40b, or the third optical sheet 40c.

Accordingly, the light source 34 can provide light to the edge of the light guide plate 38. Light entering the light guide plate 38 can be directed forward by the light guide plate 38 and the reflective sheet 37.

Referring to Figures 4 and 5, the frame 60 may include a flat part 61 and a bending part 62. The flat portion 61 may form the front surface of the frame 60 and may be formed to be generally flat. The bending portion 62 may be bent forward around the flat portion 61 and may extend along the circumference of the flat portion 61. The press portion 61P may be adjacent to one side of the flat portion 61 and may be formed by being pressed backward from the flat portion 61.

The housing 80 may be adjacent to the lower side of the frame 60 and may be located on the press portion 61P. The housing 80 may include a rear part 81, a protrusion 82, and a side part 83. The rear part 81 may be located on the press portion 61P. The protrusion 82 may protrude forward from the front of the rear part 81. The side part 83 may be bent between the bending portion 62 and the protruding portion 82 at the lower side of the rear part 81 and may protrude further forward than the protruding portion 82. The housing 80 may include a metal material such as aluminum (Al) and may be referred to as a heat sink.

The guide panel 13 may include a vertical portion 13V and a horizontal portion 13H. The vertical portion 13V may extend along the bending portion 62 and cover the outside of the bending portion 62. The horizontal portion 13H may intersect the vertical portion 13V and may cover a portion of the front of the frame 60 and the light guide plate 38.

The light guide plate 38 may be positioned between the horizontal portion 13H and the protruding portion 82. The reflective sheet 37 may be coupled to the back of the light guide plate 38 and may be located on the protrusion 82. The optical sheet 40 may be located in front of the light guide plate 38. For example, the light absorption layer 50 may be located between the optical sheet 40 and the light guide plate 38, and may be coupled to the optical sheet 40 and the light guide plate 38. For another example, the light absorption layer 50 may face the light guide plate 38 with respect to the optical sheet 40 and may be coupled to the front surface of the optical sheet 40.

Accordingly, the lower portion of the light guide plate 38 may be supported by the protruding portion 82, and the remaining portion of the light guide plate 38 may be supported by the flat portion 61.

The display panel 10 may face the optical sheet 40 with respect to the horizontal portion 13H. The front pad FP may be located between the display panel 10 and the horizontal portion 13H, and may be coupled or adhered to the horizontal portion 13H.

The first pad 90 may be located between the horizontal portion 13H and the optical sheet 40, and may be coupled or adhered to the horizontal portion 13H. The first pad 90 may be adjacent to or contact the front surface of the optical sheet 40.

The second pad 91 may be located between the horizontal portion 13H and the light guide plate 38, and may be coupled or adhered to the horizontal portion 13H. The second pad 91 may be adjacent to or contact the front surface of the light guide plate 38 .

The front cover 15 may include a first part 15V and a second part 15H. The first part 15V may extend along the vertical portion 13V and cover the outside of the vertical portion 13V. The second part 15H may intersect the first part 15V and cover a portion of the front of the guide panel 13 and the display panel 10. The pad DP may be located between the second part 15H and the display panel 10, and may be coupled or adhered to the second part 15H.

Meanwhile, a cable (not shown) may be electrically connected to the display panel 10 and a source PCB (not shown). The source PCB may be located at the rear of the frame 60.

Referring to Figures 4 and 6, the housing 80 may extend long in the left and right directions. The height h2 of the side part 83 of the housing 80 may be greater than the height h1 of the protrusion 82 of the housing 80.

The substrate 32 may be positioned between the side part 83 and the protrusion 82 and may be coupled to the side part 83. Substrate 32 may extend along side part 83.

The plurality of light sources 34 may be located between the substrate 32 and the protrusion 82 and may be mounted on the substrate 32. The plurality of light sources 34 may be spaced apart from each other in the longitudinal direction of the substrate 32, that is, in the left and right directions.

The guard 33 may be located between the substrate 32 and the protrusion 82 and may be located on the substrate 32. The guard 33 may extend in the longitudinal direction of the substrate 32, that is, in the left and right directions. A plurality of slots 33S may be formed in the guard 33, and light sources 34 may be located. The guard 33 may be an injection molded product made of resin or silicone. The thickness of the guard 33 may be greater than the thickness of the light source 34, and collision between the light guide plate 38 and the light source 34 can be prevented.

At this time, the light source 34 may be directed to the lower side of the light guide plate 38. The light source 34 may be operated by receiving power from a power device (not shown) through the substrate 32. Accordingly, light from the light source 34 may be provided to the lower side of the light guide plate 38. Light incident on the light guide plate 38 may be provided forward by the light guide plate 38 and the reflective sheet 37.

Referring to FIG. 7 , the first bending portion 62U may form the upper side of the frame 60 and face the upper side of the light guide plate 38 . The second bending portion 62D may form the lower side of the frame 60, and the side part 83 of the housing 80 may be coupled thereto.

A portion adjacent to the upper side of the light guide plate 38 may be supported by the flat plate portion 61. A portion adjacent to the lower side of the light guide plate 38 may be supported by the protrusion 82.

The first upper pad 90U may be located between the horizontal portion 13H and the optical sheet 40, and may be coupled or adhered to the horizontal portion 13H. The first upper pad 90U may be adjacent to the upper side of the optical sheet 40, and may be adjacent to or contact the front surface of the optical sheet 40.

The first lower pad 90D may be located between the horizontal portion 13H and the optical sheet 40, and may be coupled or adhered to the horizontal portion 13H. The first lower pad 90D may be adjacent to the lower side of the optical sheet 40, and may be adjacent to or contact the front surface of the optical sheet 40.

The second pad 91 may be located between the horizontal portion 13H and the light guide plate 38, and may be located between the lower side of the optical sheet 40 and the side part 83. The second pad 91 may be coupled or adhered to the horizontal portion 13H, and may be adjacent to or contact the front surface of the light guide plate 38.

The first upper pad 90U, the first lower pad 90D, and the second pad 91 may be located in a path of light emitted from the light source 34.

Referring to FIG. 8 , the third bending portion 62L may form the left side of the frame 60 and may face the left side of the light guide plate 38 . The fourth bending portion 62R may form the right side of the frame 60 and face the right side of the light guide plate 38.

A portion adjacent to the left side of the light guide plate 38 may be supported by the flat plate portion 61. A portion adjacent to the right side of the light guide plate 38 may be supported by the flat plate portion 61.

The first left pad 90L may be located between the horizontal portion 13H and the optical sheet 40, and may be coupled or adhered to the horizontal portion 13H. The first left pad 90L may be adjacent to the left side of the optical sheet 40 and may be adjacent to or contact the front of the optical sheet 40.

The first right pad 90R may be located between the horizontal portion 13H and the optical sheet 40, and may be coupled or adhered to the horizontal portion 13H. The first right pad 90R may be adjacent to the right side of the optical sheet 40, and may be adjacent to or contact the front surface of the optical sheet 40.

The first left pad 90L and the first right pad 90R may be located on the path of light emitted from the light source 34.

Referring to FIG. 9, the above-described first pads 90 (90U, 90D, 90L, 90R) and the second pad 91 may have the same structure. Each of the first pad 90 and the second pad 91 may include a fluorescent layer 901.

The fluorescent layer 901 may include a phosphor. Additionally, the plurality of layers 902, 903, 904, and 905 may be located before and after the fluorescent layer 901.

For example, the first layer 902 may be bonded or adhered to the front of the fluorescent layer 901. The second layer 903 may be combined or adhered to the back of the fluorescent layer 901. The third layer 904 and the fourth layer 905 may be combined or adhered to the back of the second layer 903.

For example, the fluorescent layer 901 may include an acrylic material and may function as an adhesive layer. In this case, the first layer 902 and the second layer 903 may be adhered to the fluorescent layer 901.

For example, the fourth layer 905 may include an acrylic material and may function as an adhesive layer. In this case, the second layer 903 and the third layer 904 may be adhered to the fourth layer 905.

For example, the first layer 902, the second layer 903, and the third layer 904 may include PET material.

Referring to FIG. 10, the optical sheet 40 and the light absorption layer 50 may be offset upward from the light guide plate 38. The size of the optical sheet 40 and the light absorption layer 50 may be larger than the size of the light guide plate 38.

The upper sides 40U and 50U of the optical sheet 40 and the light absorption layer 50 may be spaced upward from the upper side 38U of the light guide plate 38. The lower sides 40D and 50D of the optical sheet 40 and the light absorption layer 50 may be spaced upward from the lower side 38D of the light guide plate 38. The left sides 40L and 50L of the optical sheet 40 and the light absorption layer 50 may be spaced apart from the left side 38L of the light guide plate 38 to the left. The right sides 40R and 50R of the optical sheet 40 and the light absorption layer 50 may be spaced to the right from the right side 38R of the light guide plate 38.

The first upper pad 90U may be adjacent to the upper side 40U of the optical sheet 40, may extend in the left and right directions, and may be located on the optical sheet 40. The first lower pad 90D may be adjacent to the lower side 40D of the optical sheet 40, may extend in the left and right directions, and may be located on the optical sheet 40. The first left pad 90L may be adjacent to the left side 40L of the optical sheet 40, may extend in the vertical direction, and may be located on the optical sheet 40. The first right pad 90R may be adjacent to the right side 40R of the optical sheet 40, may extend in the vertical direction, and may be located on the optical sheet 40.

At this time, the left end of the first upper pad 90U may be adjacent to the top of the first left pad 90L, and the right end of the first upper pad 90U may be adjacent to the top of the first right pad 90R. can do. The left end of the first lower pad 90D may be adjacent to the lower end of the first left pad 90L, and the right end of the first lower pad 90D may be adjacent to the lower end of the first right pad 90R. there is.

For example, the left end of the first upper pad 90U may be adjacent to or contact the right side of the first left pad 90L, and the right end of the first upper pad 90U may be adjacent to the right side of the first left pad 90L. It can be adjacent to or touch the left side of .

For example, the left end of the first lower pad 90D may be adjacent to or contact the right side of the first left pad 90L, and the right end of the first lower pad 90D may be adjacent to the right side of the first left pad 90L. It can be adjacent to or touch the left side of .

That is, the first upper pad 90U and the first lower pad 90D may meet the first left pad 90L and the first right pad 90R to form a corner.

The second pad 91 may be located between the lower side 40D of the optical sheet 40 and the lower side 38D of the light guide plate 38, may extend in the left and right directions, and may be located on the light guide plate 38. You can.

For example, the second pad 91 may be arranged in parallel with the first lower pad 90D. The guide rib 13Hv (see FIG. 4) may protrude from the horizontal portion 13H between the first lower pad 90D and the second pad 91. The guide rib 13Hv may guide the coupling of the first lower pad 90D and the second pad 91 to the horizontal portion 13H.

Referring to FIG. 11, the backlight unit 20' may include an optical layer 30' and an optical sheet 40. The optical layer 30' may include a substrate 32', at least one light source 34', a reflective sheet 36, and a diffusion plate 39.

The substrate 32' may be coupled to the front of the frame 60. The substrate 32' may have a plate shape or may be composed of a plurality of straps spaced apart from each other in the vertical direction. The substrate 32' may be made of at least one of polyethylene terephthalate (PET), glass, polycarbonate (PC), or silicon. The substrate 32' may be a printed circuit board (PCB).

At least one light source 34' may be mounted on the substrate 32'. The plurality of light sources 34' may be spaced apart from each other on the substrate 32'. An electrode pattern for connecting the adapter and the light source 34' may be formed on the substrate 32'. For example, a carbon nanotube electrode pattern for connecting the light source 34' and the adapter may be formed on the substrate 32'.

For example, the light source 34' may be a light emitting diode (LED) chip or a light emitting diode package including at least one light emitting diode chip. The light source 34' may be a colored LED that emits at least one color such as red, green, blue, etc., or may be composed of a white LED. The colored LED may include at least one of a red LED, a green LED, or a blue LED. The light source 34' may be referred to as a light assembly 34'.

The reflective sheet 36 may be located in front of the substrate 32'. The reflective sheet 36 may be located on an area of the substrate 32' excluding the area where the light source 34' is formed. The reflective sheet 36 may have a hole 36a where the light source 34' is located.

Additionally, the reflective sheet 36 may include at least one of metal or metal oxide, which is a reflective material. For example, the reflective sheet 36 may include a metal and/or metal oxide having a high reflectivity, such as at least one of aluminum (Al), silver (Ag), gold (Au), or titanium dioxide (TiO2). You can. For example, resin may be deposited or applied onto the light source 34' and/or the reflective sheet 36. The resin can diffuse the light from the light source 34'. Accordingly, the reflective sheet 36 can reflect the light from the light source 34' or the light reflected from the diffusion plate 39 forward.

The diffusion plate 39 may be located in front of the reflective sheet 36. The diffusion plate 39 can diffuse the light from the light source 34'. The spacer 36b may be located between the reflective sheet 36 and the diffusion plate 39 and may support the rear side of the diffusion plate 39. Accordingly, an air gap can be formed between the reflective sheet 36 and the diffusion plate 39, and the light from the light source 34' can be spread widely by the air gap. The diffusion plate 39 may be referred to as an optical plate 39.

The optical sheet 40 may be located in front of the diffusion plate 39. The back of the optical sheet 40 may be in close contact with the diffusion plate 39, and the front of the optical sheet 40 may be in close contact with or adjacent to the back of the display panel 10. The optical sheet 40 may include at least one sheet.

For example, the optical sheet 40 may include a plurality of sheets with different functions. The first optical sheet 40a may be a diffusion sheet, and the second optical sheet 40b and the third optical sheet 40c may be prism sheets. The diffusion sheet prevents the light coming from the diffusion plate 39 from being partially concentrated, thereby making the distribution of light more uniform. The prism sheet can condense the light coming from the diffusion plate 39 and provide it to the display panel 10. Meanwhile, the number and/or location of the diffusion sheet and the prism sheet may be changed.

The coupling portion 40d may be formed on at least one edge of the optical sheet 40. The coupling portion 40d may be formed on at least one of the first optical sheet 40a, the second optical sheet 40b, or the third optical sheet 40c.

Accordingly, the light from the light source 34' can be directed forward through the diffusion plate 39 and the optical sheet 40.

Referring to Figures 12 and 13, the frame 60 may include a flat part 61 and a bending part 62. The flat portion 61 may form the front surface of the frame 60 and may be formed to be generally flat. The bending portion 62 may be bent forward around the flat portion 61 and may extend along the circumference of the flat portion 61. The press portion 61P may be formed by pressing backward from the flat portion 61, and the substrate 32' may be mounted thereon.

The guide panel 13 may include a vertical portion 13V and a horizontal portion 13H. The vertical portion 13V may extend along the bending portion 62 and cover the outside of the bending portion 62. The horizontal portion 13H may intersect the vertical portion 13V and may cover a portion of the front of the frame 60 and the diffusion plate 39.

The diffusion plate 39 may be located between the horizontal portion 13H and the frame 60. The reflective sheet 36 may be located between the diffusion plate 39 and the frame 60. The optical sheet 40 may be positioned between the horizontal portion 13H and the diffusion plate 39. For example, the light absorption layer 50 may be located between the optical sheet 40 and the diffusion plate 39, and may be coupled to the optical sheet 40 and the diffusion plate 39. For another example, the light absorption layer 50 may face the diffusion plate 39 with respect to the optical sheet 40 and may be coupled to the front of the optical sheet 40.

Accordingly, the peripheral portion of the diffusion plate 39 may be supported by the frame 60.

The display panel 10 may face the optical sheet 40 with respect to the horizontal portion 13H. The front pad FP may be located between the display panel 10 and the horizontal portion 13H, and may be coupled or adhered to the horizontal portion 13H.

The first pad 90' may be located between the horizontal portion 13H and the optical sheet 40, and may be coupled or adhered to the horizontal portion 13H. The first pad 90' may be adjacent to or contact the front surface of the optical sheet 40.

Referring again to FIG. 12, the first bending portion 62U may form the upper side of the frame 60 and face the upper side of the diffusion plate 39. The second bending portion 62D may form the lower side of the frame 60 and face the lower side of the diffusion plate 39.

The portion adjacent to the upper side and the portion adjacent to the lower side of the diffusion plate 39 may be supported by the flat plate portion 61.

The first upper pad 90U' may be located between the horizontal portion 13H and the optical sheet 40, and may be coupled or adhered to the horizontal portion 13H. The first upper pad 90U' may be adjacent to the upper side of the optical sheet 40, and may be adjacent to or contact the front surface of the optical sheet 40.

The first lower pad 90D' may be located between the horizontal portion 13H and the optical sheet 40, and may be coupled or adhered to the horizontal portion 13H. The first lower pad 90D' may be adjacent to the lower side of the optical sheet 40, and may be adjacent to or contact the front surface of the optical sheet 40.

The first upper pad 90U' and the first lower pad 90D' may be located in the path of light emitted from the light source 34'.

Referring again to FIG. 13, the third bending portion 62L may form the left side of the frame 60 and may face the left side of the diffusion plate 39. The fourth bending portion 62R may form the right side of the frame 60 and face the right side of the diffusion plate 39.

The portion adjacent to the left side and the portion adjacent to the right side of the diffusion plate 39 may be supported by the flat plate portion 61.

The first left pad 90L' may be located between the horizontal portion 13H and the optical sheet 40, and may be coupled or adhered to the horizontal portion 13H. The first left pad 90L' may be adjacent to the left side of the optical sheet 40 and may be adjacent to or contact the front surface of the optical sheet 40.

The first right pad 90R' may be located between the horizontal portion 13H and the optical sheet 40, and may be coupled or adhered to the horizontal portion 13H. The first right pad 90R' may be adjacent to the right side of the optical sheet 40, and may be adjacent to or contact the front of the optical sheet 40.

The first left pad 90L' and the first right pad 90R' may be located on the path of light emitted from the light source 34'.

Referring to FIG. 14 , the above-described first pads 90': 90U', 90D', 90L', and 90R' may include a fluorescent layer 901'.

The fluorescent layer 901' may include a phosphor. Additionally, the plurality of layers 902', 903', 904', and 905' may be located before and after the fluorescent layer 901'.

For example, the first layer 902' may be bonded or adhered to the front of the fluorescent layer 901'. The second layer 903' may be combined or adhered to the back of the fluorescent layer 901'. The third layer 904' and the fourth layer 905' may be combined or adhered to the back of the second layer 903'.

For example, the fluorescent layer 901' may include an acrylic material and may function as an adhesive layer. In this case, the first layer 902' and the second layer 903' may be adhered to the fluorescent layer 901'.

For example, the fourth layer 905' may include an acrylic material and may function as an adhesive layer. In this case, the second layer 903' and the third layer 904' may be adhered to the fourth layer 905'.

For example, the first layer 902', the second layer 903', and the third layer 904' may include PET material.

Referring to FIG. 15, the size of the optical sheet 40 and the light absorption layer 50 may be larger than the size of the diffusion plate 39.

The upper sides 40U and 50U of the optical sheet 40 and the light absorption layer 50 may be spaced upward from the upper side 39U of the diffusion plate 39. The lower sides 40D and 50D of the optical sheet 40 and the light absorption layer 50 may be spaced downward from the lower side 39D of the diffusion plate 39. The left sides 40L and 50L of the optical sheet 40 and the light absorption layer 50 may be spaced left from the left side 39L of the diffusion plate 39. The right sides (40R, 50R) of the optical sheet 40 and the light absorption layer 50 may be spaced to the right from the right side (39R) of the diffusion plate 39.

The first upper pad 90U' may be adjacent to the upper side 40U of the optical sheet 40, may extend in the left and right directions, and may be located on the optical sheet 40. The first lower pad 90D' may be adjacent to the lower side 40D of the optical sheet 40, may extend in the left and right directions, and may be located on the optical sheet 40. The first left pad 90L' may be adjacent to the left side 40L of the optical sheet 40, may extend in the vertical direction, and may be located on the optical sheet 40. The first right pad 90R' may be adjacent to the right side 40R of the optical sheet 40, may extend in the vertical direction, and may be located on the optical sheet 40.

At this time, the left end of the first upper pad 90U' may be adjacent to the upper end of the first left pad 90L', and the right end of the first upper pad 90U' may be adjacent to the top of the first right pad 90R'. It can be adjacent to the top of . The left end of the first lower pad 90D' may be adjacent to the lower end of the first left pad 90L', and the right end of the first lower pad 90D' may be adjacent to the lower end of the first right pad 90R'. It can be adjacent to .

For example, the left end of the first upper pad 90U' may be adjacent to or contact the right side of the first left pad 90L', and the right end of the first upper pad 90U' may be adjacent to the right side of the first left pad 90L'. It may be adjacent to or touching the left side of (90R').

For example, the left end of the first lower pad 90D' may be adjacent to or contact the right side of the first left pad 90L', and the right end of the first lower pad 90D' may be adjacent to or contact the right side of the first left pad 90L'. It may be adjacent to or touching the left side of (90R').

That is, the first upper pad 90U' and the first lower pad 90D' may meet the first left pad 90L' and the first right pad 90R' to form a corner.

Referring to FIGS. 16 and 18, the display panel 10 may include a front substrate 10a, a rear substrate 10b, a color filter 10c, and polarizing films 10d and 10e. The color filter 10c may be located between the front substrate 10a and the rear substrate 10b. The first polarizing film 10d may be located on the front side of the front substrate 10a, and the second polarizing film 10e may be located on the back side of the rear substrate 10b. Between the front substrate 10a and the rear substrate 10b, a liquid crystal layer and a TFT may be additionally added, but description thereof will be omitted.

The light sources 34 and 34' may provide light to the light absorption layer 50 and the optical sheet 40 through the light guide plate 38 or the diffusion plate 39. Light passing through the light absorption layer 50 and the optical sheet 40 may be provided to the display panel 10. The display panel 10 can display images using this light.

In addition, the light provided from the light sources 34, 34' can be divided into light before passing through the light absorbing layer 50 (L1, L1') and light passing through the light absorbing layer 50 (L2, L2'). there is. Light (L1, L1') and light (L2, L2') may have different spectra.

16 and 17, the light absorption layer 50 may be located between the light sources 34 and 34' and the display panel 10. The first light absorption layer 50a may include a green phosphor (GP), and the second light absorption layer 50b may include a red phosphor (RP). Alternatively, the first light absorption layer 50a may include not only the green phosphor (GP) but also a certain ratio of the red phosphor (RP). For example, the green phosphor (GP) may be a particle of 3 to 7 micrometers (SrGa2S4:Eu), and the red phosphor (RP) may be a particle of 1 micrometer or less ((Sr,Ca)AlSiN3:Eu). there is.

The first light absorption layer 50a may be a green phosphor (GP) or a QD film (Quantum Dot Enhancement Film) including a green phosphor (GP) and a red phosphor (RP). For example, the first light absorption layer 50a may have a thickness of about 90 micrometers. The first light absorption layer 50a may absorb blue-colored light and emit green-colored light. For example, the first light absorption layer 50a may absorb light in the 400 to 500 nm wavelength range. For example, the first light absorption layer 50a may absorb light in the 434 to 461 nm wavelength range.

The second light absorption layer 50b may be a NOM film (Nano Organic Material Film) including a red phosphor (RP). For example, the second light absorption layer 50b may have a thickness of about 3 micrometers. The second light absorption layer 50b may absorb green light and emit red light. For example, the second light absorption layer 50b may absorb light in the 500 to 600 nm wavelength range. For example, the second light absorption layer 50b may absorb light in the 524 to 557 nm wavelength range.

Additionally, the first light absorption layer 50a may be adhered to the second light absorption layer 50b. For example, the adhesive may be coated on the first light absorption layer 50a, and may be laminated and adhered to the second light absorption layer 50b. The first light absorption layer 50a and the second light absorption layer 50b may be collectively referred to as NOF (50, Nano Organic Film) or Hybrid NOF (50).

For example, the first light absorption layer 50a may be located between the light sources 34 and 34' and the display panel 10, and the second light absorption layer 50b may be located between the first light absorption layer 50a and the display panel. It can be located between (10). For another example, the second light absorption layer 50b may be located between the light sources 34 and 34' and the display panel 10, and the first light absorption layer 50a may be positioned between the second light absorption layer 50b and the display panel. It may be located between the panels 10.

The light L1 from the light sources 34 and 34' may be, for example, blue light and may excite the green phosphor GP. For example, light sources 34 and 34' may be blue LEDs. Light (L0) excited and emitted from the green phosphor (GP) can excite the red phosphor (RP). At this time, the light L1 from the light sources 34 and 34' may have light characteristics of strong blue light, and may emit green light as it passes through the first light absorption layer 50a and the second light absorption layer 50b. The intensity of light in the series and red series can change to increased or enhanced light (L2).

In other words, part of the light L1 from the light sources 34 and 34' is not absorbed or reflected by the green phosphor GP and red phosphor RP, but is absorbed by the first light absorption layer 50a and the second light absorption layer 50b. It may pass through and appear as blue light (B), and may be mixed with green light (G) and red light (R) emitted from the first light absorption layer (50a) and the second light absorption layer (50b) to produce white light ( L2) can be implemented.

This light conversion can be repeated by recycling between the reflective sheet (37, see FIGS. 7 and 8; 36, see FIGS. 12 and 13) and the optical sheet 40. However, the light conversion rate at a location adjacent to the edge of the light absorption layer 50 may be smaller than the light conversion rate at a location adjacent to the center of the light absorption layer 50. That is, near the edge of the light absorption layer 50, light with a strong intensity of blue light may be provided toward the display panel 10. In addition, near the edge of the light absorption layer 50, light with a strong intensity of blue light may be provided toward the display panel 10 through the gap between the horizontal portion 13H and the optical sheet 40. .

In this case, the fluorescent layer 901 (see FIG. 9) of the first pad 90 and the second pad 91 may include yellow phosphor (see FIGS. 7 and 8). The fluorescent layer 901' (see FIG. 14) of the first pad 90' may include yellow phosphor (see FIGS. 12 and 13). For example, the yellow phosphor may be YAG (Yttrium Aluminum Garnet), La3Si6N11, LuAG (Al5Lu3O12), or Silicate.

That is, near the edge of the light absorption layer 50, the light from the light source 34, 34' may be absorbed or reflected by the yellow phosphor of the fluorescent layer 901, 901', thereby exciting the yellow phosphor. , the yellow phosphor can emit yellow-based light. This yellow light can be mixed with the blue light of the light sources 34 and 34' that passed through the pads 90, 91, and 90' without being absorbed or reflected by the yellow phosphor, and white light can be realized. You can.

Alternatively, the fluorescent layers 901, 901' may include a yellow phosphor and a red phosphor, and the light from the light source 34, 34' passing through the fluorescent layers 901, 901'. can be implemented as white light. For example, the yellow phosphor may be YAG (Yttrium Aluminum Garnet), La3Si6N11, LuAG (Al5Lu3O12), or Silicate. For example, the red phosphor may be (Sr, Ca)AlSiN3:Eu, or (Sr, Ca, Ba)2SiN8:Eu.

Accordingly, the pads 90, 91, and 90' can minimize the formation of blue bands near the edges of the display panel 10.

Referring to FIGS. 18 and 19, the concentration of green phosphor GP may be reduced in the first light absorption layer 50a'. For example, the concentration of the green phosphor (GP) in the first light absorption layer (50a') may be 50 to 55% lower than the concentration of the green phosphor (GP) in the first light absorption layer (50a) described above with reference to FIG. 17. there is. For example, the concentration of the green phosphor GP in the first light absorption layer 50a' may be 45% of the concentration of the green phosphor GP in the first light absorption layer 50a described above with reference to FIG. 17. In this case, the light absorption layer 50' may be referred to as a low-concentration light absorption layer 50' or a low-concentration hybrid NOF (50').

The phosphor 34c may be located around the light sources 34 and 34'. For example, the phosphor 34c may be in powder form. The light sources 34 and 34' and the phosphor 34c may be collectively referred to as light assemblies 34, 34' and 34c.

For example, the housing 34a may provide a concave receiving space where the light sources 34 and 34' are located. The encapsulant 34b may include a phosphor 34c. The liquid encapsulant 34b mixed with the phosphor 34c may fill the receiving space of the housing 34a and be hardened, and may cover the light sources 34 and 34'.

The light from the light sources 34 and 34' may be blue light. For example, light sources 34 and 34' may be blue LEDs. The phosphor 34c may be yellow and/or a color (alpha) different from yellow. The phosphor 34c may include a yellow phosphor (YP) and a red phosphor (AP). For example, the yellow phosphor (YP) may be YAG (Yttrium Aluminum Garnet), La3Si6N11, LuAG (Al5Lu3O12), or Silicate. For example, the red phosphor (AP) may be (Sr, Ca)AlSiN3:Eu, or (Sr, Ca, Ba)2SiN8:Eu.

For example, in the phosphor 34c, the proportion of the yellow phosphor (YP) may be 42 to 62%, the proportion of the red phosphor (AP) may be 37 to 57%, and the phosphors (YP, AP) may be They can be mixed to 100% by adding them together within the range of the above ratio.

For example, the content ratio of red phosphor (AP) to yellow phosphor (YP) may be 0.71 to 0.93.

For example, the content of the phosphors (YP, AP) in the encapsulant 34b may be 5 to 10%. The encapsulant 34b may include a silicone material. Meanwhile, in comparison, if the content of the phosphors (YP, AP) in the encapsulant 34b is 25%, the light sources 34, 34' and the phosphors (YP, AP) can form a white LED assembly. there is.

Accordingly, the blue light from the light source (34, 34') can excite the phosphors (YP, AP) while being absorbed or reflected by the phosphors (YP, AP). ) may emit yellow and/or red light.

Light (L1', especially blue light) emitted as blue light from the light sources 34, 34' and passing through the phosphor 34c and the encapsulant 34b passes through the first light absorption layer 50a'. By being absorbed or reflected by the green phosphor (GP), the green phosphor (GP) can be excited, and the green phosphor (GP) can emit green light. The green light (L0') emitted by the green phosphor (GP) in the first light absorption layer (50a') passes through the second light absorption layer (50b) and is absorbed or reflected by the red phosphor (RP). can be excited, and the red phosphor (RP) can emit red light.

Accordingly, the light L2' passing through the low-concentration light absorption layer 50' can implement white light. In addition, the decrease in light conversion rate of the light absorption layer due to the use of the low-concentration light absorption layer 50' instead of the light absorption layer 50 described above with reference to FIG. 17 can be compensated for through the phosphor 34c. For example, the color temperature of the image provided from the front of the display panel 10 may be 8,000 to 12,000 K.

This light conversion can be repeated by recycling between the reflective sheet (37, see FIGS. 7 and 8; 36, see FIGS. 12 and 13) and the optical sheet 40. However, the light conversion rate at a location adjacent to the edge of the light absorption layer 50' may be smaller than the light conversion rate at a location adjacent to the center of the optical sheet 40. That is, near the edge of the light absorption layer 50', light with a strong intensity of blue light may be provided toward the display panel 10. In addition, near the edge of the light absorption layer 50', light with a strong intensity of blue light can be provided toward the display panel 10 through the gap between the horizontal portion 13H and the optical sheet 40. there is.

In this case, the fluorescent layer 901 (see FIG. 9) of the first pad 90 and the second pad 91 may include yellow phosphor (see FIGS. 7 and 8). The fluorescent layer 901' (see FIG. 14) of the first pad 90' may include yellow phosphor (see FIGS. 12 and 13). For example, the yellow phosphor may be YAG (Yttrium Aluminum Garnet), La3Si6N11, LuAG (Al5Lu3O12), or Silicate.

That is, near the edge of the light absorption layer 50', light from the light sources 34 and 34' may be absorbed or reflected by the yellow phosphor of the fluorescent layer 901 and 901' to excite the yellow phosphor. And, the yellow phosphor can emit yellow-based light. This yellow-based light may be mixed with the blue-based light of the light sources 34 and 34' that passed through the pads 90, 91, and 90' without being absorbed or reflected by the yellow phosphor, and white light may be realized. You can.

Alternatively, the fluorescent layers 901, 901' may include a yellow phosphor and a red phosphor, and the light from the light source 34, 34' passing through the fluorescent layers 901, 901'. can be implemented as white light. For example, the yellow phosphor may be YAG (Yttrium Aluminum Garnet), La3Si6N11, LuAG (Al5Lu3O12), or Silicate. For example, the red phosphor may be (Sr, Ca)AlSiN3:Eu, or (Sr, Ca, Ba)2SiN8:Eu.

Accordingly, the pads 90, 91, and 90' can minimize the formation of blue bands near the edges of the display panel 10.

1 to 19, a display device according to one aspect of the present disclosure includes: a display panel; an optical assembly providing light to the display panel; a light absorption layer located on an optical path provided from the optical assembly to the display panel and absorbing light of a certain range of wavelengths; an optical plate facing the display panel with respect to the light absorption layer; a guide panel extending along the periphery of the optical plate; a guide panel including a vertical portion covering the circumference of the optical plate and a horizontal portion extending from the vertical portion between the display panel and the light absorption layer; And, it may include a first pad located between the horizontal portion and the light absorbing layer, coupled to the horizontal portion, and adjacent to or in contact with the front surface of the light absorbing layer, wherein the first pad is: a fluorescent layer with a phosphor. may include.

The first pad may be adjacent to an edge of the light absorption layer.

The optical assembly may include a light source that provides blue light, and the fluorescent layer may have a yellow phosphor.

The optical assembly may include a light source that provides blue light, and the fluorescent layer may include a yellow phosphor and a red phosphor.

The first pad includes: a first upper pad adjacent to the upper side of the light absorbing layer and extending along the upper side of the light absorbing layer; a first lower pad adjacent to the lower side of the light absorbing layer and extending along the lower side of the light absorbing layer; a first left pad adjacent to the left side of the light absorbing layer and extending along the left side of the light absorbing layer; Additionally, it may further include a first right pad adjacent to the right side of the light absorption layer and extending along the right side of the light absorption layer.

The first upper pad and the first lower pad may meet the first left pad and the first right pad to form a corner.

The optical plate has: a first side; And, it may include a second side opposite to the first side, and the optical assembly may include: a light source that provides light to the first side of the optical plate, and the light absorption layer may include: may be offset from the plate in a direction from the first side toward the second side, wherein the display device is: adjacent to the first side, positioned between the horizontal portion and the optical plate, and It may further include a second pad coupled to the portion and adjacent to or in contact with the front surface of the optical plate, wherein the second pad may include: a phosphor layer having a phosphor.

The phosphor of the fluorescent layer of the second pad may be the same as the phosphor of the fluorescent layer of the first pad.

The first side may be a lower side of the optical plate, and the first pad may further include: a first lower pad adjacent to the lower side of the light absorbing layer and extending along the lower side of the light absorbing layer, , the second pad may be located between the lower side of the light absorption layer and the lower side of the optical plate, and may be arranged in parallel with the first lower pad.

The horizontal portion may further include a guide rib protruding from the horizontal portion between the first lower pad and the second pad.

The first pad may further include a plurality of layers disposed before and after the fluorescent layer.

The display device includes: a frame positioned behind the optical plate; a reflective sheet positioned between the optical plate and the frame; In addition, it may further include an optical sheet positioned between the light absorption layer and the display panel, and the first pad may be positioned on the optical sheet.

The optical assembly may include a light source that provides blue light, and the light absorption layer may include: a first light absorption layer including a green phosphor; Additionally, it may further include a second light absorbing layer that includes a red phosphor and is adhered to the first light absorbing layer.

The optical assembly includes: an encapsulant covering a periphery of the light source; Additionally, it may include a phosphor located inside the encapsulant, and the phosphor of the light assembly may include a yellow phosphor and a red phosphor.

The content of the phosphor of the optical assembly relative to the encapsulant may be 5 to 10%, and the color temperature of the image provided from the front of the display panel may be 8,000 to 12,000 K.

Any or other embodiments of the present disclosure described above are not exclusive or distinct from each other. In certain embodiments or other embodiments of the present disclosure described above, each configuration or function may be used in combination or combined.

For example, this means that configuration A described in a particular embodiment and/or drawing may be combined with configuration B described in other embodiments and/or drawings. In other words, even if the combination between components is not directly explained, it means that combination is possible, except in cases where it is explained that combination is impossible.

The above detailed description should not be construed as restrictive in any respect and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

Claims (15)

display panel;
An optical plate located behind the display panel;
a substrate extending along one side of the optical plate;
a plurality of optical assemblies located on one side of the substrate facing the one side of the optical plate and arranged along the longitudinal direction of the substrate;
a guard extending in the longitudinal direction of the substrate and positioned on the one surface of the substrate; a guard including a plurality of slots where the plurality of optical assemblies are positioned and spaced apart from each other;
a light absorption layer located between the display panel and the optical plate and absorbing light of a certain range of wavelengths;
a guide panel extending along the periphery of the optical plate; a guide panel including a vertical portion covering the circumference of the optical plate and a horizontal portion extending from the vertical portion between the display panel and the light absorption layer; and,
A first pad located between the horizontal portion and the light absorbing layer, coupled to the horizontal portion, and adjacent to or in contact with the front surface of the light absorbing layer,
The first pad is:
comprising a fluorescent layer having a phosphor,
The gap between the part of the guard excluding the slots and the one side of the optical plate is,
A display device that is smaller than a gap between the optical assemblies and the one side of the optical plate. According to claim 1,
The first pad is,
A display device adjacent to the edge of the light absorption layer. According to claim 1,
The optical assembly:
Includes a light source that provides blue light,
The fluorescent layer is,
A display device with yellow phosphor. According to claim 1,
The optical assembly:
Includes a light source that provides blue light,
The fluorescent layer is,
A display device having yellow phosphor and red phosphor. According to claim 1,
The first pad is:
a first upper pad adjacent to the upper side of the light absorbing layer and extending along the upper side of the light absorbing layer;
a first lower pad adjacent to the lower side of the light absorbing layer and extending along the lower side of the light absorbing layer;
a first left pad adjacent to the left side of the light absorbing layer and extending along the left side of the light absorbing layer; and,
The display device further includes a first right pad adjacent to the right side of the light absorption layer and extending along the right side of the light absorption layer. According to clause 5,
The first upper pad and the first lower pad are,
A display device where the first left pad and the first right pad meet to form a corner. According to claim 1,
The optical plate:
1st side; and,
Comprising a second side opposite to the first side,
The optical assembly:
A light source providing light to the first side of the optical plate,
The light absorption layer is,
Offset from the optical plate in a direction from the first side to the second side,
A second pad adjacent to the first side, located between the horizontal portion and the optical plate, coupled to the horizontal portion, and adjacent to or in contact with the front surface of the optical plate,
The second pad:
A display device comprising a fluorescent layer with phosphor. According to clause 7,
The phosphor of the fluorescent layer of the second pad is,
A display device, such as the phosphor of the phosphor layer of the first pad. According to clause 7,
The first side is a lower side of the optical plate,
The first pad is:
It further includes a first lower pad adjacent to the lower side of the light absorbing layer and extending along the lower side of the light absorbing layer,
The second pad is,
A display device located between the lower side of the light absorption layer and the lower side of the optical plate and disposed in parallel with the first lower pad. According to clause 9,
The horizontal portion:
A display device further comprising a guide rib protruding from the horizontal portion between the first lower pad and the second pad. According to claim 1,
The first pad is:
A display device further comprising a plurality of layers disposed before and after the fluorescent layer. According to claim 1,
A frame located behind the optical plate;
a reflective sheet positioned between the optical plate and the frame; and,
Further comprising an optical sheet positioned between the light absorption layer and the display panel,
The first pad is a display device located on the optical sheet. According to claim 1,
The optical assembly:
Includes a light source that provides blue light,
The light absorption layer is:
A first light absorption layer including a green phosphor; and,
A display device comprising a red phosphor and further comprising a second light absorption layer adhered to the first light absorption layer. According to claim 13,
The optical assembly:
an encapsulant covering the surroundings of the light source; and,
Comprising a phosphor located inside the encapsulant,
The phosphor of the optical assembly is,
A display device comprising a yellow phosphor and a red phosphor. According to claim 14,
The content of the phosphor of the optical assembly relative to the encapsulant is,
5 to 10%,
The color temperature of the image provided from the front of the display panel is,
A display device that is 8,000 to 12,000K.

Images