Display device

Abstract

A display device is disclosed. The display device includes: a display panel; a light guide plate positioned behind the display panel and facing the display panel; and a light source positioned on one side of the light guide plate and providing light to the inside of the light guide plate. The light guide plate includes: a plurality of regions disposed in parallel with the one side surface or the other side surface between the one side surface and the other side surface opposite to the one side surface and sequentially partitioned from the one side surface toward the other side surface, wherein the plurality of regions include: a first region which is adjacent to the light source and includes the one side surface, and in which a first plurality of dots are formed; a second region which is adjacent to the first region and in which a second plurality of dots are formed; a third region which is adjacent to the second region and includes the other surface and in which a third plurality of dots are formed, wherein the density of the second plurality of dots may be greater than the density of the first plurality of dots, and the density of the third plurality of dots may be greater than the density of the second plurality of dots, and in the first region, the density of the first plurality of dots may decrease toward the light source.

Description

display device

[0001] The present disclosure relates to a display device.

[0002] As the information society develops, the demand for display devices is also increasing in various forms, and in response to this, various display devices such as LCD (Liquid Crystal Display Device), PDP (Plasma Display Panel), ELD (Electro luminescent Display), VFD (Vacuum Fluorescent Display), and OLED (Organic Light Emitting Diode) are being researched and used in recent years.

[0003] 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 an image using light provided from a backlight unit.

[0004] Recently, much research has been conducted to improve the color quality of display devices to improve the high resolution of display devices.

[0005] The present disclosure aims to solve the above-mentioned and other problems.

[0006] Another purpose may be to provide a display device with improved color reproduction of the backlight unit.

[0007] Another purpose may be to provide a display device that implements high definition.

[0008] Another purpose may be to provide a display device that improves color distortion due to manufacturing tolerances.

[0009] According to one aspect of the present disclosure for achieving the above or other purposes, a display device may include: a display panel; a light guide plate positioned at the rear of the display panel and facing the display panel; and a light source positioned at one side of the light guide plate and providing light to the inside of the light guide plate.

[0010] The light guide plate includes: a plurality of regions arranged parallel to the one side or the other side between the other side opposite the one side and sequentially partitioned from the one side toward the other side, wherein the plurality of regions include: a first region adjacent to the light source and including the one side, and in which a first plurality of dots are formed; a second region adjacent to the first region and including the other side, and in which a second plurality of dots are formed; and a third region adjacent to the second region and including the other side, and in which a third plurality of dots are formed, wherein a density of the second plurality of dots is greater than a density of the first plurality of dots, and a density of the third plurality of dots is greater than a density of the second plurality of dots, and in the first region, the density of the first plurality of dots may decrease as it gets closer to the light source.

[0011] The effects of the display device according to the present disclosure are described as follows.

[0012] According to at least one of the embodiments of the present disclosure, a display device having improved color perception of a backlight unit can be provided.

[0013] According to at least one of the embodiments of the present disclosure, a display device implementing high definition can be provided.

[0014] According to at least one of the embodiments of the present disclosure, a display device can be provided that improves color distortion due to manufacturing tolerances.

[0015] Further scope of the applicability of the present disclosure will become apparent from the detailed description below. However, since various modifications and variations within the spirit and scope of the present disclosure will become apparent to those skilled in the art, it should be understood that the detailed description and specific examples, such as preferred embodiments of the present disclosure, are given by way of example only.

[0016] Figures 1 to 15 are drawings illustrating examples of display devices according to embodiments of the present disclosure.

[0017] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Regardless of the drawing numbers, identical or similar components are given the same reference numbers and redundant descriptions thereof will be omitted.

[0018] The suffixes "module" and "part" used for components in the following description are given or used interchangeably only for the convenience of writing specifications, and do not have distinct meanings or roles in themselves.

[0019] In addition, when describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, the attached drawings are only intended to facilitate easy understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and technical scope of the present disclosure.

[0020] Terms that include ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by these terms. These terms are used solely to distinguish one component from another.

[0021] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components intervening. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components intervening.

[0022] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0023] In this application, terms such as “include” or “have” are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but should be understood not to exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0024]

[0025] Referring to FIG. 1, a display device (1) may include a display panel (10). The display panel (10) may display an image.

[0026] The display device (1) may include a first long side (First Long Side, LS1), a second long side (Second Long Side, LS2) opposite to the first long side (LS1), a first short side (First Short Side, SS1) adjacent to the first long side (LS1) and the second long side (LS2), and a second short side (Second Short Side, SS2) opposite to the first short side (SS1). Meanwhile, for convenience of explanation, the lengths of the first and second long sides (LS1, LS2) are illustrated and described as being longer than the lengths of the first and second short sides (SS1, SS2), but it may also be possible for the lengths of the first and second long sides (LS1, LS2) to be approximately equal to the lengths of the first and second short sides (SS1, SS2).

[0027] The direction parallel to the long sides (LS1, LS2) of the display device (1) may be referred to as the left-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 up-down 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).

[0028] The direction in which the display panel (10) displays an image 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) may be referred to as the upper side (U, y). The second long side (LS2) may be referred to as the lower side (D). The first short side (SS1) may be referred to as the left side (Le, x). The second short side (SS2) may be referred to as the right side (Ri).

[0029] 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). In addition, 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 referred to as a corner.

[0030] For example, the point where the first short side (SS1) and the first long side (LS1) meet can be called the first corner (C1). The point where the first long side (LS1) and the second short side (SS2) meet can be called the second corner (C2). The point where the second short side (SS2) and the second long side (LS2) meet can be called the third corner (C3). The point where the second long side (LS2) and the first short side (SS1) meet can be called the fourth corner (C4).

[0031]

[0032] Referring to FIG. 2, the display device (1) may include a display panel (10), a front cover (15), a guide panel (13), a backlight unit (20), a frame (60), and a back cover (70).

[0033] The display panel (10) can form the front surface of the display device (1) and can display an image. 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) can include a front substrate and a rear substrate that face each other with a liquid crystal layer therebetween. The display panel (10) can be referred to as an LCD panel.

[0034] The front substrate may include a plurality of pixels composed of red, green, and blue sub-pixels. The front substrate may output light corresponding to the color red, green, or blue according to a control signal.

[0035] The rear substrate may include switching elements. The rear substrate may switch the pixel electrode. For example, the pixel electrode may change the molecular arrangement of the liquid crystal layer according to a control signal input from the outside. The liquid crystal layer may include liquid crystal molecules. The arrangement of the liquid crystal molecules may change in accordance with a 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.

[0036] The front cover (15) can 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 positioned on the front of the display panel (10) and a side cover positioned on the side. The front cover and the side cover may be provided separately or as one body. At least one of the front cover or the side cover may be omitted.

[0037] The guide panel (13) can surround the periphery of the display panel (10) and cover the side of the display panel (10). The guide panel (13) can be combined with the display panel (10) or support the display panel (10). The guide panel (13) can be referred to as a panel guide or a side frame.

[0038] The backlight unit (20) may be positioned at the rear of the display panel (10). The backlight unit (20) may include light sources. The backlight unit (20) may be coupled to the frame (60) at the front of the frame (60). The backlight unit (20) may be driven by a full driving method or a partial driving method such as local dimming or impulsive. The backlight unit (20) may include an optical sheet (40) and an optical layer (30).

[0039] The optical sheet (40) can evenly transmit light from a light source to the display panel (10). The optical sheet (40) may be composed of multiple layers. For example, the optical sheet (40) may include a prism sheet or a diffusion sheet. Meanwhile, the joining portion (40d) of the optical sheet (40) may be joined to the front cover (15), the frame (60), or the back cover (70).

[0040] The frame (60) may be positioned at the rear of the backlight unit (20) and may support components of the display device (1). For example, components such as the backlight unit (20), a PCB (Printed Circuit Board) on which a plurality of electronic components are positioned, and the like may be combined with the frame (60). The frame (60) may include a metal material such as an aluminum alloy. The frame (60) may be referred to as a main frame or a module cover.

[0041] The back cover (70) can cover the rear of the frame (60). The back cover (70) can be coupled to the frame (60) and / or the front cover (15). For example, the back cover (70) can be an injection-molded resin material. As another example, the back cover (70) can include a metal material.

[0042]

[0043] Referring to FIG. 3, the optical layer (30) may include a substrate (31), at least one optical assembly (32), a reflective sheet (37), and a light guide plate (36). The optical sheet (40) may be positioned in front of the optical layer (30).

[0044] The substrate (31) may extend left and right and may be adjacent to the periphery of the light guide plate (36). For example, the substrate (31) may be adjacent to the lower side of the light guide plate (36). At least one light assembly (32) may be mounted on the substrate (31). That is, the light source of the backlight unit (20) may be disposed at the edge of the backlight unit (20). An electrode pattern may be formed on the substrate (31) to connect the adapter and the light assembly (32). For example, the electrode pattern may be a carbon nanotube electrode pattern. The substrate (31) may be composed of at least one of polyethylene terephthalate (PET), glass, polycarbonate (PC), or silicon. The substrate (31) may be a PCB (Printed Circuit Board) on which at least one light assembly (32) is mounted.

[0045] The optical assembly (32) may be a light emitting diode (LED) chip or a light emitting diode package including at least one light emitting diode chip. The optical assembly (32) may be composed of a colored LED or a white LED that emits at least one color, such as red, green, and blue. The colored LED may include at least one of a red LED, a green LED, or a blue LED.

[0046] A light guide plate (36) may be positioned at the rear of the optical sheet (40). Most of the light provided from the optical assembly (32) may be transmitted to the interior of the light guide plate (36). The light guide plate (36) may reflect the light transmitted from the optical assembly (32) forward.

[0047] The reflective sheet (37) may be positioned at the rear of the light guide plate (36). The reflective sheet (37) may reflect light provided from the light assembly (32) or reflected from the light guide plate (36) forward. 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).

[0048] The optical sheet (40) may include at least one sheet. For example, the optical sheet (40) may include one or more prism sheets and / or one or more diffusion sheets. The multiple sheets of the optical sheet (40) may be adhered or adhered to each other.

[0049] Specifically, the optical sheet (40) may be composed of a plurality of sheets having different functions. For example, the optical sheet (40) may include a first optical sheet (40a), a second optical sheet (40b), and a third optical sheet (40c). For example, 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 may prevent the light coming from the diffusion plate (35) from being partially concentrated, thereby making the distribution of the light more uniform. The prism sheet may collect the light coming from the diffusion plate (35) and provide it to the display panel (10). Meanwhile, the number and / or positions of the diffusion sheets and the prism sheets may be changed.

[0050] Meanwhile, the optical layer (30) may include a diffusion plate (35) positioned between the light guide plate (36) and the optical sheet (40).

[0051]

[0052] Referring to FIGS. 4 and 5, the frame (60) may include a flat portion (61) and a banding portion (62). The flat portion (61) may form the front surface of the frame (60) and may be formed to be generally flat. The banding portion (62) may be bent forward from the edge of the flat portion (61) and may extend along the edge of the flat portion (61).

[0053] The housing (80) may be positioned on the flat portion (61). The housing (80) may be adjacent to the lower side of the frame (60). The housing (80) may include a rear part (81), a protrusion (82), and a side part (85). The rear part (81) may be coupled or fixed to the flat portion (61). The protrusion (82) may protrude forward from the front of the rear part (81). The side part (85) may be bent forward from the lower end of the rear part (81) and may protrude further forward than the protrusion (82). The side part (85) may be positioned between the bending part (62) and the protrusion (82), and may be spaced apart from the bending part (62) and the protrusion (82). The housing (80) may include a metal material such as aluminum (Al). The housing (80) may be referred to as a heat sink (80).

[0054] 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 outer side of the bending portion (62). The horizontal portion (13H) may intersect the vertical portion (13V) and cover a portion of the front of the frame (60) and the housing (80).

[0055] The light guide plate (36) can be positioned between the horizontal portion (13H) and the protrusion (82). The reflective sheet (37) can be coupled to the rear surface of the light guide plate (36). The pad (37a) can be positioned between the reflective sheet (37) and the protrusion (82), and can be coupled to the protrusion (82). The optical sheet (40) can be coupled to the front surface of the light guide plate (36), and may include, for example, a first optical sheet (40a) and a second optical sheet (40b). Accordingly, a portion adjacent to the lower side of the light guide plate (36) can be supported by the protrusion (82). Meanwhile, portions adjacent to the upper side, the left side, and the right side of the light guide plate (36) can be supported by the frame (60).

[0056] The display panel (10) can face the optical sheet (40) with respect to the horizontal portion (13H). The front pad (FP) can be positioned between the display panel (10) and the horizontal portion (13H) and can be coupled to the horizontal portion (13H). The first rear pad (RP1) can be positioned between the horizontal portion (13H) and the optical sheet (40) and can be coupled to the horizontal portion (13H). The second rear pad (RP2) can be positioned between the horizontal portion (13H) and the light guide plate (36) and can be coupled to the horizontal portion (13H).

[0057] The end frame (17) may include a first part (17V) and a second part (17H). The first part (17V) may extend along the vertical portion (13V) and cover the outer side of the vertical portion (13V). The second part (17H) may intersect the first part (17V) and cover a portion of the front of the guide panel (13) and the display panel (10). The pad (DP) may be positioned between the second part (17H) and the display panel (10) and may be coupled to the second part (17H).

[0058] Meanwhile, the cable (C) can be electrically connected to the display panel (10) and the source PCB (B, Source Printed Circuit Board). The cable (C) can pass between the guide panel (13) and the end frame (17) and can be connected to the source PCB (B) at the rear of the frame (60). For example, the cable (C) can be an FFC (Flexible Flat Cable).

[0059]

[0060] Referring to FIGS. 6 and 7, the housing (80) may be elongated in the left-right direction. The housing (80) may be adjacent to the lower side of the frame (60) (see FIG. 4). In the front-back direction, the height (h2) of the side part (85) may be greater than the height (h1) of the protrusion (82).

[0061] Press portions (83, 84) can be formed by pressing from the rear to the front of the housing (80). The press portions (83, 84) can face the side part (85) with respect to the protrusion (82).

[0062] The substrate (31) may be positioned between the side part (85) and the protrusion (82), and may be coupled to the side part (85). The substrate (31) may be spaced downward from the protrusion (82). The substrate (31) may extend along the side part (85). For example, the substrate (31) may be a MCPCB (Metal Core Printed Circuit Board).

[0063] A plurality of light sources (32) may be positioned on the substrate (31) between the substrate (31) and the protrusion (82). The plurality of light sources (32) may be spaced apart from each other in the longitudinal direction of the substrate (31), i.e., in the left-right direction. The plurality of light sources (32) may be arranged in a row in the left-right direction.

[0064] A guard (33) may be positioned on the substrate (31) between the substrate (31) and the protrusion (82). The guard (33) may extend in the longitudinal direction of the substrate (31), i.e., in the left-right direction. The guard (33) may be positioned closer to the front end than the rear end of the side part (85). For example, the guard (33) may be an injection-molded product made of resin or silicone.

[0065] And, the guard (33) may include a plurality of slots (33S) in the shape of long holes extending left and right. The plurality of light sources (32) may be grouped into a plurality of groups, and for example, each group may include three light sources. Each of the plurality of groups may be positioned in each of the plurality of slots (33S). In other words, one slot may surround the light sources of one group. The guard (33) may be referred to as a protector or a barrier.

[0066]

[0067] Referring to Fig. 8, the light source (32) may be directed toward one side, i.e., the lower side, of the light guide plate (36). The light source (32) may be an LED and may be operated by receiving power from a power supply (not shown) through the substrate (31). The thickness (t3) of the guard (33) may be greater than the thickness of the light source (32). Accordingly, the guard (33) may prevent collision between the light guide plate (36) and the light source (32).

[0068] The vertical pad (38) may be positioned between the substrate (31) and the side part (85), and may be bonded to the substrate (31) and the side part (85). The vertical pad (38) may have adhesive performance. Accordingly, heat generated from the light source (32) may be easily transferred to the side part (85) through the substrate (31) and the vertical pad (38). The vertical pad (38) may include a silicone-based material. The vertical pad (38) may be referred to as a vertical heat dissipation pad.

[0069] An air gap (80h) may be formed between the banding portion (62) and the side part (85). A plurality of grooves (86) may be formed in the air gap and may be formed on the lower surface of the side part (85). The plurality of grooves (86) may extend in the longitudinal direction of the side part (85), i.e., in the left-right direction, and may be spaced apart from each other in the front-back direction. The plurality of grooves (86) may have an uneven shape that is repeated at regular intervals overall. Accordingly, the heat of the side part (85) may be easily released into the air gap (80h).

[0070]

[0071] Fig. 9 is a drawing showing an example of a cross-sectional view of a first long side (LS1), a first short side (SS1), or a second short side (SS2) of a display device (1). The display panel (10) may include an active area (AA) and an inactive area (DA). The display panel (10) may display an image in the active area (AA).

[0072] The frame (60) may include a flat portion (61), an inclined portion (63), and a support portion (64). The inclined portion (63) may extend from the flat portion (61) to form an incline. The support portion (64) may extend from the inclined portion (63) and form the outer edge of the frame (60) at the rear of the display panel (10).

[0073] The reflective sheet (37) is positioned in front of the frame (60) and can be placed on the support (64). The light guide plate (36) can be positioned on the reflective sheet (37). Light can be guided while being totally reflected inside the light guide plate (36). The area of ​​the reflective sheet (37) can correspond to the area of ​​the light guide plate (36). The optical sheet (40) can be positioned on the light guide plate (36). For example, light traveling while being totally reflected in the light guide plate (36) can be blue or green, and the optical sheet (40) can convert the blue or green into white light.

[0074] The guide panel (13) can be coupled to the support (64) of the frame (60). The horizontal portion (13H) of the guide panel (13) can cover the perimeter of the light guide plate (36). The horizontal portion (13H) of the guide panel (13) can cover the perimeter of the optical sheet (40). The first rear pad (RP1) can be positioned between the guide panel (13) and the optical sheet (40). The first rear pad (RP1) is fixed or adhered to the rear surface of the horizontal portion (13H) of the guide panel (13) and can press the upper surface of the optical sheet (40). For example, the first rear pad (RP1) can include black.

[0075] The front pad (FP) may be positioned on the front of the horizontal portion (13H) of the guide panel (13). The display panel (10) may be placed on the front pad (FP). The front pad (FP) may be fixed or adhered to the horizontal portion (13H) of the guide panel (13). The display panel (10) may be fixed on the front pad (FP).

[0076] The boundary of the active area (AA) of the display panel (10) may be aligned with the end of the horizontal portion (13H) of the guide panel (13). The inactive area (DA) of the display panel (10) may be an area where the display panel (10) and the horizontal portion (13H) of the guide panel (13) overlap. The bezel area (BZ) of the display device (1) may be defined by the vertical portion (13V) of the guide panel (13). The light guide plate (36) emits light by the light provided from the light guide plate (36), and uniform light may be provided to the display panel (10) by the optical sheet (40).

[0077] When a gap is created between the first rear pad (RP1) and the optical sheet (40), the color light provided from the light guide plate (36) through the gap can be recognized from the outside of the display device (1).

[0078] To improve the luminous efficiency of the light provided by the light guide plate (36) to the display panel (10) and to improve color differences that may occur at the outer periphery of the display panel (10), a side reflective sheet (36R) may cover the side of the light guide plate (36). The side reflective sheet (36R) may be adhered to the side of the light guide plate (36). For example, the side reflective sheet (36R) may be a white-colored tape adhered to the side of the light guide plate (36).

[0079] Accordingly, it is possible to improve the difference in color that may occur depending on the color of the light source at the upper side (LS1), left side (SS1) and / or right side (SS2) of the display device (1).

[0080]

[0081] Fig. 10 is a drawing showing an example of a cross-sectional view of a second long side (LS2) of a display device (1). The frame (60) may include a flat portion (61) and a bending portion (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 from the edge of the flat portion (61) and may extend along the edge of the flat portion (61).

[0082] The housing (80) may be positioned on the flat portion (61). The housing (80) may be adjacent to the lower side of the frame (60). The housing (80) may include a rear part (81), a protrusion (82), and a side part (85). The rear part (81) may be coupled or fixed to the flat portion (61). The protrusion (82) may protrude forward from the front of the rear part (81). The side part (85) may be bent forward from the lower end of the rear part (81) and may extend so as to protrude further forward than the protrusion (82). The side part (85) may be positioned between the bending part (62) and the protrusion (82), and may be spaced apart from the bending part (62) and the protrusion (82). The housing (80) may include a metal material such as aluminum (Al). The housing (80) may be referred to as a heat sink (80).

[0083] 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 outer side of the bending portion (62). The horizontal portion (13H) may intersect the vertical portion (13V) and cover a portion of the front of the frame (60) and the housing (80).

[0084] The light guide plate (36) can be positioned between the horizontal portion (13H) and the protrusion (82). The reflective sheet (37) can be coupled to the rear surface of the light guide plate (36). The pad (37a) can be positioned between the reflective sheet (37) and the protrusion (82), and can be coupled to the protrusion (82). The optical sheet (40) can be coupled to the front surface of the light guide plate (36), and can include, for example, a first optical sheet (40a) and a second optical sheet (40b). The optical sheet (40) can convert blue or green light into white light.

[0085] The display panel (10) can face the optical sheet (40) with respect to the horizontal portion (13H). The front pad (FP) can be positioned between the display panel (10) and the horizontal portion (13H), and can be coupled, fixed, or adhered to the horizontal portion (13H). The first rear pad (RP1) can be positioned between the horizontal portion (13H) and the optical sheet (40), and can be coupled, fixed, or adhered to the horizontal portion (13H). The second rear pad (RP2) can be positioned between the horizontal portion (13H) and the light guide plate (36), and can be coupled, fixed, or adhered to the horizontal portion (13H).

[0086] The end frame (17) may include a first part (17V) and a second part (17H). The end frame (17) may be referred to as a top case (17). The first part (17V) may extend along the vertical portion (13V) and cover the outer side of the vertical portion (13V). The second part (17H) may intersect the first part (17V) and cover a portion of the front of the guide panel (13) and the display panel (10). The pad (DP) may be positioned between the second part (17H) and the display panel (10) and may be coupled or fixed to the second part (17H).

[0087] The display panel (10) may include an active area (AA) and an inactive area (DA). The display panel (10) may display an image in the active area (AA).

[0088] The light guide plate (36) may be positioned on the reflective sheet (37). Light may be guided while being totally reflected inside the light guide plate (36). The area of ​​the reflective sheet (37) may correspond to the area of ​​the light guide plate (36). The optical sheet (40) may be positioned on the light guide plate (36). For example, light traveling while being totally reflected in the light guide plate (36) may be blue or green, and the optical sheet (40) may convert the blue or green into white light.

[0089] The guide panel (13) can be coupled to the bending portion (62) of the frame (60). The horizontal portion (13H) of the guide panel (13) can cover the perimeter of the light guide plate (36). The horizontal portion (13H) of the guide panel (13) can cover the perimeter of the optical sheet (40). The first rear pad (RP1) can be positioned between the guide panel (13) and the optical sheet (40). The first rear pad (RP1) is fixed or adhered to the rear surface of the horizontal portion (13H) of the guide panel (13) and can press the upper surface of the optical sheet (40). For example, the first rear pad (RP1) can include black.

[0090] The front pad (FP) may be positioned on the front of the horizontal portion (13H) of the guide panel (13). The display panel (10) may be placed on the front pad (FP). The front pad (FP) may be fixed or adhered to the horizontal portion (13H) of the guide panel (13). The display panel (10) may be fixed on the front pad (FP).

[0091] The boundary of the active area (AA) of the display panel (10) may be aligned with the end of the horizontal portion (13H) of the guide panel (13). The inactive area (DA) of the display panel (10) may be an area where the display panel (10) and the horizontal portion (13H) of the guide panel (13) overlap. The bezel area (BZ) of the display device (1) may be defined by the vertical portion (13V) of the guide panel (13) and may also be defined by the second part (17H) of the end frame (17).

[0092] By the light provided from the light guide plate (36), the light guide plate (36) emits light on the surface, and uniform light can be provided to the display panel (10) by the optical sheet (40).

[0093] The light source (32) can provide blue or green light. The light provided from the light source (32) is incident on the side of the light guide plate (36) and is totally reflected by the light guide plate (36), thereby causing the light guide plate (36) to emit light on its surface. The optical sheet (40) can absorb blue or green light and convert it into white light.

[0094] If a gap is created between the first rear pad (RP1) and the optical sheet (40) or between the second rear pad (RP2) and the light guide plate (36) due to manufacturing tolerances of the housing (80) and / or the frame (60), colored light provided from the light guide plate (36) through the gap may be visible from the outside of the display device (1). For example, a blueish or greenish color may occur on the second long side (LS2) of the display panel (10).

[0095] In order to improve the luminous efficiency of the light provided by the light guide plate (36) to the display panel (10) and to improve the color difference that may occur at the periphery of the display panel (10), a top reflective sheet (36T) may cover the upper surface adjacent to the edge of the lower side (LS2) of the light guide plate (36). The top reflective sheet (36T) may be adhered to a portion of the upper surface of the light guide plate (36). For example, the top reflective sheet (36T) may be a black series tape adhered to a portion of the upper surface of the light guide plate (36). The top reflective sheet (36T) may be referred to as a top reflective pad (36T), a top cover sheet (36T), or a top cover pad (36T).

[0096] The area of ​​the optical sheet (40) may be smaller than the area of ​​the upper surface of the light guide plate (36). A portion of the upper surface adjacent to the lower side (LS2) of the light guide plate (36) may not be covered by the optical sheet (40). A portion of the upper surface adjacent to the lower side (LS2) of the light guide plate (36) may be exposed to the outside by the optical sheet (40). The top reflective sheet (36T) may be fixed or adhered to the upper surface adjacent to the lower side (LS2) of the light guide plate (36) that is exposed to the outside by the optical sheet (40).

[0097] Accordingly, it is possible to improve the difference in color that may occur depending on the color of the light source at the lower side (LS2) of the display device (1).

[0098]

[0099] Referring to FIG. 11 together with FIG. 10, a pattern (36a) may be formed on the light guide plate (36). For example, the pattern (36a) may be dots (36a). The light guide plate (36) may include a first region (AR1), a second region (AR2), and / or a third region (AR3). The regions (AR1, AR2, AR3) of the light guide plate (36) may divide the light guide plate (36) into three equal parts in the longitudinal direction of the first short side (SS1) and / or the second short side (SS2) of the light guide plate (36). That is, the regions (AR1, AR2, AR3) of the light guide plate (36) may be partitioned parallel to the long sides (LS1, LS2) of the light guide plate (36).

[0100] The pattern (36a) may be formed on the front and / or rear surface of the light guide plate (36). The pattern (36a) may be formed convexly on the front and / or rear surface of the light guide plate (36), or may be formed concavely on the front and / or rear surface of the light guide plate (36). The pattern (36a) may be formed integrally with the light guide plate (36) or may be printed on the front and / or rear surface of the light guide plate (36). The sizes of the dots (36a) forming the pattern (36a) may be the same.

[0101] Light may be incident from a light source (32) on the side of the first region (AR1). Light incident on the first region (AR1) may be totally reflected from the inside of the light guide plate (36) to the second region (AR2). Light incident on the second region (AR2) may be totally reflected from the inside of the light guide plate (36) to the third region (AR3). The density of dots (36a) in the second region (AR2) may be higher than the density of dots (36a) in the first region (AR1). The density of dots (36a) in the third region (AR3) may be higher than the density of dots (36a) in the second region (AR2).

[0102] The first region (AR1) may include a first sub-region (DTA1) and a second sub-region (DTA2). The first sub-region (DTA1) may be adjacent to the light source (32), and the second sub-region (DTA2) may be adjacent to the first sub-region (DTA1).

[0103] The light guide plate (36) may include an incident area (GPE, see FIG. 10). The incident area (GPE) is located at the end of the lower side (LS2) of the light guide plate (36), and light provided from a light source (32) may be incident thereon. For example, the distance (Ga, see FIG. 10) from the light source (32) to the side of the light guide plate (36) in the incident area (GPE) may be about 0.2 to 0.5 millimeters. For another example, the distance (Ga, see FIG. 10) from the light source (32) to the side of the light guide plate (36) in the incident area (GPE) may be about 0.33 millimeters. The first sub-area (DTA1) may be located adjacent to the incident area (GPE). The first sub-area (DTA1) may be located between the incident area (GPE) and the second sub-area (DTA2). The distance from the end of the incident area (GPE) to the first sub-area (DTA1) (GPE, see FIG. 10) may be 1.5 millimeters to 4.5 millimeters. The first sub-area (DTA1) may overlap with the horizontal portion (13H) of the guide panel (13). The boundary of the second sub-area (DTA2) may be aligned with the end of the horizontal portion (13H) of the guide panel (13) and may overlap with the active area (AA) of the display panel (10).

[0104] In the longitudinal direction of the first short side (SS1) and / or the second short side (SS2) of the light guide plate (36), the width (DTA2, see FIG. 10) of the second sub-area (DTA2) may be greater than the width (DTA1, see FIG. 10) of the first sub-area (DTA1). The density of the dots (36a) of the second sub-area (DTA2) may be lower than the density of the dots (36a) of the first area (DTA1) adjacent to the second sub-area (DTA2) as an outer area of ​​the second sub-area (DTA2). The dots (36a) may not be formed in the first sub-area (DTA1).

[0105] Accordingly, it is possible to improve the difference in color at the lower side (LS2) or the second long side (LS2) of the display panel (10).

[0106]

[0107] Referring to FIG. 12 together with FIG. 10, the pattern (36a) may be formed on the front and / or rear surface of the light guide plate (36). The pattern (36a) may be formed convexly on the front and / or rear surface of the light guide plate (36), or may be formed concavely on the front and / or rear surface of the light guide plate (36). The pattern (36a) may be formed integrally with the light guide plate (36) or may be printed on the front and / or rear surface of the light guide plate (36). The sizes of the dots (36a) forming the pattern (36a) may be the same.

[0108] Light may be incident from a light source (32) on the side of the first region (AR1). The light incident on the first region (AR1) may be totally reflected from the inside of the light guide plate (36) to the second region (AR2). The light incident on the second region (AR2) may be totally reflected from the inside of the light guide plate (36) to the third region (AR3). The density of the dots (36a) of the second region (AR2) may be higher than the density of the dots (36a) of the first region (AR1). The density of the dots (36a) of the third region (AR3) may be higher than the density of the dots (36a) of the second region (AR2). The difference in the density of the dots (36a) may be controlled by the size of the dots (36a), the number of dots (36a) per unit area, etc.

[0109] The first region (AR1) may include a first sub-region (DTA1) and a second sub-region (DTA2). The first sub-region (DTA1) may be adjacent to the light source (32), and the second sub-region (DTA2) may be adjacent to the first sub-region (DTA1). An incident area (GPE, see FIG. 10) may be located between the first sub-region (DTA1) and the light source (32).

[0110] The density of the dots (36a) of the second sub-area (DTA2) may be lower than the density of the dots (36a) of the first area (DTA1) adjacent to the second sub-area (DTA2) as an outer area of ​​the second sub-area (DTA2). The density of the dots (36a) of the second sub-area (DTA2) may be higher than the density of the dots (36a) of the first sub-area (DTA1).

[0111] Accordingly, it is possible to improve the difference in color at the lower side (LS2) or the second long side (LS2) of the display panel (10).

[0112]

[0113] Referring to FIG. 13, the pattern (36a) may be formed on the front and / or rear surface of the light guide plate (36). The pattern (36a) may be formed convexly on the front and / or rear surface of the light guide plate (36), or may be formed concavely on the front and / or rear surface of the light guide plate (36). The pattern (36a) may be formed integrally with the light guide plate (36) or may be printed on the front and / or rear surface of the light guide plate (36). The sizes of the dots (36a) forming the pattern (36a) may be the same.

[0114] Light may be incident from a light source (32) on the side of the first region (AR1). The light incident on the first region (AR1) may be totally reflected from the inside of the light guide plate (36) to the second region (AR2). The light incident on the second region (AR2) may be totally reflected from the inside of the light guide plate (36) to the third region (AR3). The density of the dots (36a) of the second region (AR2) may be higher than the density of the dots (36a) of the first region (AR1). The density of the dots (36a) of the third region (AR3) may be higher than the density of the dots (36a) of the second region (AR2). The difference in the density of the dots (36a) may be controlled by the size of the dots (36a), the number of dots (36a) per unit area, etc.

[0115] The first region (AR1) may include a first sub-region (DTA1) and a second sub-region (DTA2). The first sub-region (DTA1) may be adjacent to the light source (32), and the second sub-region (DTA2) may be adjacent to the first sub-region (DTA1). An incident area (GPE, see FIG. 10) may be located between the first sub-region (DTA1) and the light source (32).

[0116] The density of the dots (36a) of the second sub-area (DTA2) may be lower than the density of the dots (36a) of the first area (DTA1) adjacent to the second sub-area (DTA2) as an outer area of ​​the second sub-area (DTA2). The density of the dots (36a) of the second sub-area (DTA2) may be higher than the density of the dots (36a) of the first sub-area (DTA1). The size of the dots (36a) of the first sub-area (DTA1) may be smaller than the size of the dots (36a) of the second sub-area (DTA2).

[0117] Accordingly, it is possible to improve the difference in color at the lower side (LS2) or the second long side (LS2) of the display panel (10).

[0118]

[0119] Referring to FIGS. 14 and 15, the light guide plate (36, see FIGS. 11 to 13) can be divided into 30 sub-areas (DTA) in the longitudinal direction of the first short side (SS1) and / or the second short side (SS2) parallel to the first long side (LS1) and / or the second long side (LS2). The 30 sub-areas (DTA) can have the same width.

[0120] Fig. 14 shows an example of the density of dots (36a) of a light guide plate (36) divided into 30 sub-areas (DTA). Fig. 15 shows an example of an enlarged view of the dotted line in Fig. 14.

[0121] The density of the dots (36a) of the first sub-area (DTA1) may be reduced compared to the density of the dots (36a) of the second sub-area (DTA2). The density of the dots (36a) of the first sub-area (DTA1) may further be reduced as the light source (32) approaches. For example, the density of the dots (36a) of the first sub-area (DTA1) may be reduced by 10 to 40 percent compared to the density of the dots (36a) of the second sub-area (DTA2). For another example, the density of the dots (36a) of the first sub-area (DTA1) may be reduced by 10 to 30 percent compared to the density of the dots (36a) of the second sub-area (DTA2). For another example, the density of the dots (36a) of the first sub-area (DTA1) may be reduced by about 20 percent compared to the density of the dots (36a) of the second sub-area (DTA2).

[0122] Accordingly, it is possible to improve the difference in color at the lower side (LS2) or the second long side (LS2) of the display panel (10).

[0123]

[0124] Referring to FIGS. 1 to 15, a display device includes: a display panel (10); a light guide plate (36) positioned at the rear of the display panel (10) and facing the display panel (10); and a light source (32) positioned on one side (LS2) of the light guide plate (36) and providing light to the inside of the light guide plate (36), wherein the light guide plate (36) includes: a plurality of regions (AR1, AR2, AR3) arranged between the other side (LS1) opposite the one side (LS2) and parallel to the one side (LS2) or the other side (LS1), and sequentially partitioned from the one side (LS2) toward the other side (LS1), wherein the plurality of regions (AR1, AR2, AR3) include: a first region (AR1) adjacent to the light source (32) and including the one side (LS2), and in which a first plurality of dots (36a) are formed; A second region (AR2) adjacent to the first region (AR1) and having a second plurality of dots (36a) formed thereon; and a third region (AR3) adjacent to the second region (AR2), including the other side surface (LS1), and having a third plurality of dots (36a) formed thereon, wherein a density of the second plurality of dots (36a) is greater than a density of the first plurality of dots (36a), and a density of the third plurality of dots (36a) is greater than a density of the second plurality of dots (36a), and in the first region (AR1), the density of the first plurality of dots (36a) may decrease as it gets closer to the light source (32).

[0125] The first region (AR1) of the light guide plate (36) includes: an incident region (GPE) located adjacent to the light source (32) and onto which light provided from the light source (32) is incident; a first sub-region (DTA1) adjacent to the incident region (GPE) and having a first dot density; and a second sub-region (DTA2) adjacent to the first sub-region (DTA1) and having a second dot density, wherein the second dot density may be greater than the first dot density.

[0126] The above first sub-area (DTA1) may not include a dot (36a).

[0127] The number of dots (36a) of the first sub-area (DTA1) may be smaller than the number of dots (36a) of the second sub-area (DTA2), and the sizes of the dots (36a) of the first sub-area (DTA1) and the second sub-area (DTA2) may be the same.

[0128] The number of dots (36a) of the first sub-area (DTA1) may be the same as the number of dots (36a) of the second sub-area (DTA2), and the size of the dots (36a) of the first sub-area (DTA1) may be smaller than the size of the dots (36a) of the second sub-area (DTA2).

[0129] The first dot density may be 10 to 30 percent less than the second dot density.

[0130] The display panel (10) includes: an active area (AA) for displaying an image; and an inactive area (DA) forming a perimeter of the active area (AA) and not displaying an image, wherein the second sub-area (DTA2) overlaps the active area (AA) of the display panel (10), and the first sub-area (DTA1) can overlap the inactive area (DA) of the display panel (10).

[0131] The second sub-area (DTA2) overlapping with the active area (AA) of the display panel (10) may be larger than the first sub-area (DTA1) overlapping with the inactive area (DA) of the display panel (10).

[0132] The above light guide plate (36) may include: one side surface (LS2) through which light is incident to the incident area (GPE); and a side upper surface facing the display panel (10) and connected to the one side surface (LS2).

[0133] A reflective sheet (37) facing the display panel (10) with respect to the light guide plate (36) and covering the lower surface of the light guide plate (36); and an optical sheet (40) facing the reflective sheet (37) with respect to the light guide plate (36) and covering the upper surface of the light guide plate (36), wherein the upper side surface of the light guide plate (36) is adjacent to the upper surface of the light guide plate (36) and can be exposed to the outside next to the optical sheet (40).

[0134] It further includes a top cover sheet (36T) covering the upper side surface of the light guide plate (36), and the top cover sheet (36T) may include a black color.

[0135] The optical sheet (40) may overlap the first sub-area (DTA1) and the second sub-area (DTA2), and the reflective sheet (37) may overlap the first sub-area (DTA1), the second sub-area (DTA2), and the incident area (GPE).

[0136] The above top cover sheet (36T) can overlap with the above reflective sheet (37).

[0137] A frame (60) facing the light guide plate (36) with respect to the above reflective sheet (37); and a guide panel (13) including a horizontal portion (13H) coupled to the frame (60) and positioned between the optical sheet (40) and the display panel (10) to support the display panel (10), wherein the horizontal portion (13H) of the guide panel (13) can overlap with the first sub-area (DTA1) and the incident area (GPE).

[0138] A first rear pad (PR1) positioned between the horizontal portion (13H) of the guide panel (13) and the optical sheet (40) and fixed to the horizontal portion (13H) of the guide panel (13); a second rear pad (RP2) positioned between the horizontal portion (13H) of the guide panel (13) and the light guide plate (36) and fixed to the horizontal portion (13H) of the guide panel (13), wherein the second rear pad (RP2) can face the upper side surface of the light guide plate (36).

[0139] At least a portion of the second rear pad (RP2) can be in contact with the top cover sheet (36T) or the upper side surface of the light guide plate (36).

[0140]

[0141] Any or all of the embodiments of the present disclosure described above are not mutually exclusive or distinct. Any or all of the embodiments of the present disclosure described above may have their respective components or functions combined or used together.

[0142] For example, it means that a configuration A described in a particular embodiment and / or drawing can be combined with a configuration B described in another embodiment and / or drawing. That is, even if a combination between configurations is not directly described, it means that a combination is possible, except in cases where a combination is described as impossible.

[0143] The above detailed description should not be construed as limiting in any respect and should be considered illustrative only. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are intended to be included within the scope of the present invention.

Claims

1. Display panel; A light guide plate located at the rear of the display panel and facing the display panel; and A light source positioned on one side of the light guide plate and providing light to the inside of the light guide plate, The above light guide plate: Between the other side opposite to the one side, a plurality of regions are arranged parallel to the one side or the other side, and are sequentially partitioned from the one side toward the other side, The above multiple areas are: A first region adjacent to the light source and including the one side, in which a first plurality of dots are formed; A second region adjacent to the first region, in which a second plurality of dots are formed; and A third region adjacent to the second region, including the other side, and in which a third plurality of dots are formed, The density of the second plurality of dots is greater than the density of the first plurality of dots, The density of the third plurality of dots is is greater than the density of the second plurality of dots, In the above first area, The density of the first plurality of dots is, A display device that decreases as it gets closer to the light source.

2. In paragraph 1, The first area of ​​the above light guide plate is: An incident area located adjacent to the light source and into which light provided from the light source is incident; A first sub-region adjacent to the above incident region and having a first dot density; and A second sub-region adjacent to the first sub-region and having a second dot density, The above second dot density is, A display device having a dot density greater than the first dot density.

3. In paragraph 2, The above first sub-area is, A display device that does not contain dots.

4. In paragraph 2, The number of dots in the first sub-area is is less than the number of dots in the second sub-area, A display device in which the sizes of the dots of the first sub-area and the second sub-area are the same.

5. In paragraph 2, The number of dots in the first sub-area is The number of dots in the second sub-area is the same as that of the above, The size of the dots in the first sub-area is A display device smaller than the size of the dots of the second sub-area.

6. In paragraph 2, The above first dot density is, A display device having a second dot density that is 10 to 30 percent smaller than the first dot density.

7. In paragraph 2, The above display panel: The active area that displays the image; and forming a perimeter of the above active area and including an inactive area that does not display an image, The above second sub-area is, Overlapping the active area of ​​the above display panel, The above first sub-area is, A display device overlapping the inactive area of ​​the above display panel.

8. In paragraph 7, The second sub-area overlapping the active area of ​​the above display panel is A display device larger than the first sub-area overlapping the inactive area of ​​the above display panel.

9. In paragraph 2, The above light guide plate: The above one side surface through which light is incident on the above incident area; and, A display device comprising a side upper surface facing the display panel and connected to the one side surface.

10. In paragraph 9, A reflective sheet facing the display panel and covering the lower surface of the light guide plate; and The light guide plate further includes an optical sheet facing the reflective sheet and covering the upper surface of the light guide plate, The upper side surface of the above light guide plate is A display device adjacent to the upper surface of the light guide plate and exposed to the outside from the side of the optical sheet.

11. In paragraph 10, Further comprising a top cover sheet covering the upper side surface of the above light guide plate, The above top cover sheet, A display device that contains black.

12. In paragraph 11, The above optical sheet, Overlapping the first sub-area and the second sub-area, The above reflective sheet, A display device overlapping the first sub-area, the second sub-area, and the incident area.

13. In paragraph 12, The above top cover sheet, A display device overlapping the above reflective sheet.

14. In paragraph 13, A frame facing the light guide plate with respect to the above reflective sheet; and, A guide panel is coupled to the frame and includes a horizontal portion positioned between the optical sheet and the display panel to support the display panel, The horizontal part of the above guide panel is, A display device overlapping the first sub-area and the incident area.

15. In paragraph 14, A first rear pad positioned between the horizontal portion of the guide panel and the optical sheet and fixed to the horizontal portion of the guide panel; and Further comprising a second rear pad positioned between the horizontal portion of the guide panel and the light guide plate and fixed to the horizontal portion of the guide panel, The above second rear pad, A display device facing the upper side of the above light guide plate.

16. In paragraph 15, The above second rear pad, A display device in which at least a portion of the top cover sheet or the upper side surface of the light guide plate is in contact with the top cover sheet or the upper side surface of the light guide plate.

Images