KR102450081B1 - display - Google Patents

Abstract

In an embodiment, the display device includes a display panel, a guide panel under the display panel, a backlight unit including optical sheets accommodated in the guide panel, a light guide plate, and a reflective sheet, and at least one or more under both sides parallel to a minor axis direction of the guide panel. and a second support part under both sides parallel to the long axis direction of the first support part and the guide panel, and the optical sheets have an edge of the diffusion sheet at the lowermost part protruding outward than the other sheets to overlap the first and second support parts, Since the first and second support portions simultaneously press and support the diffusion sheet and the light guide plate, generation of foreign substances due to flow and friction between the diffusion sheet and the light guide plate may be improved. The embodiment may improve the occurrence of foreign matter between the diffusion sheet and the light guide plate, thereby improving image quality deterioration such as spotting and light leakage.

Description

display device {DISPLAY DEVICE}

The present invention relates to a display device.

Recently, various flat panel displays (FPDs) capable of reducing weight and volume, which are disadvantages of cathode ray tubes, have been developed. Such flat panel displays include a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP), and an organic light emitting diode display (OLED). display), and an electroluminescence device (ED).

A general liquid crystal display (LCD) is a device that displays a desired image by adjusting the light transmittance of liquid crystal cells arranged in a matrix form according to image signal information. to form

A display device using this principle tends to have a wider application range due to features such as light weight, thin shape, and low power consumption driving.

According to this trend, the display device is used for office automation equipment, audio/video equipment, and the like.

Since a general liquid crystal display device is a nonmissive type display device, a backlight unit including a separate light source for irradiating light to the liquid crystal display panel is required.

A general backlight unit includes a light source, a light guide plate, and optical sheets, and the light source, light guide plate, and optical sheets may be fastened to a guide panel having a rectangular frame shape.

In a general display device, a liquid crystal display panel may be disposed on a guide panel, and a predetermined distance from the backlight unit may be maintained by protrusions or pads under the guide panel, and flow of components of the backlight unit may be prevented. .

However, in a general display device, since the optical sheets and the light guide plate of the backlight unit are fixed by the pad, there is a problem in that the flow of the optical sheets and the light guide plate that are contracted or expanded by heat cannot be considered. In particular, a general display device has a problem of causing deterioration in image quality, such as a speckled image and light leakage, due to the generation of foreign matter due to friction between the optical sheets and the light guide plate.

The embodiment may provide a display device that can stably support the contraction or expansion of the optical sheets and the light guide plate.

Also, the embodiment may provide a display device capable of improving the generation of foreign substances due to friction between the optical sheets and the light guide plate.

In an embodiment, the display device includes a display panel, a guide panel under the display panel, a backlight unit including optical sheets accommodated in the guide panel, a light guide plate, and a reflective sheet, and at least one or more under both sides parallel to a minor axis direction of the guide panel. A first support and a second support under both sides parallel to the long axis direction of the guide panel, the optical sheets include a diffusion sheet at the lowermost portion, and the edge of the diffusion sheet protrudes outward from the other sheets to form first and second Since the support portion overlaps, the first and second support portions may simultaneously press and support the diffusion sheet and the light guide plate. Accordingly, the embodiment may improve the generation of foreign substances due to flow and friction between the diffusion sheet and the light guide plate. The embodiment may improve the occurrence of foreign matter between the diffusion sheet and the light guide plate, thereby improving image quality deterioration such as spotting and light leakage.

In an embodiment of the present invention, since the diffusion sheet disposed at the bottom of the optical sheets extends more outward than the other sheets and overlaps the first and second supports, the first and second supports simultaneously press the diffusion sheet and the light guide plate, and can support Accordingly, the embodiment may improve the occurrence of foreign matter due to flow and friction between the diffusion sheet and the light guide plate, and may improve image quality deterioration such as spotting and light leakage due to foreign matter.

In addition, another embodiment may improve the separation of the contact portion from the first support portion by a guide protrusion surrounding the contact portion in direct contact with the diffusion sheet, thereby improving the stability of the diffusion sheet and the support structure.

Another embodiment may reduce friction between the diffusion sheet, the light guide plate, and the reflective sheet when the diffusion sheet, the light guide plate, and the reflective sheet are contracted and expanded by the first support part having a flexibility that surrounds all of the diffusion sheet, the light guide plate and the reflective sheet. .

Further, in another embodiment, the diffusion sheet, the light guide plate, and the reflective sheet may be stably supported by the first support part having flexibility without friction with each other at different shrinkage and expansion coefficients.

1 is a perspective view illustrating a display device according to an embodiment.
2 is a plan view illustrating a lower surface of a guide panel according to an embodiment.
FIG. 3 is a perspective view illustrating a cross-section of the display device taken along line I-I' of FIG. 1 .
FIG. 4 is a cross-sectional view illustrating the display device cut along line I-I' of FIG. 1 .
5 is a cross-sectional view illustrating the guide panel cut along the line II-II' of FIG. 1 .
6 is a plan view illustrating a lower surface of a guide panel according to another exemplary embodiment.
7 is a perspective view illustrating a cross-section of a display device according to another exemplary embodiment.
8 is a perspective view illustrating a cross-section of a display device according to another exemplary embodiment.
9 is a cross-sectional view illustrating the display device of FIG. 8 .

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are illustrative and the present invention is not limited to the illustrated matters. Like reference numerals refer to like elements throughout. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

When 'including', 'having', 'consisting', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, the case in which the plural is included is included unless specifically stated otherwise.

In interpreting the components, it is interpreted as including an error range even if there is no separate explicit description.

In the case of a description of the positional relationship, for example, when the positional relationship of two parts is described as 'on', 'on', 'on', 'beside', etc., 'right' Alternatively, one or more other parts may be positioned between two parts unless 'directly' is used.

In the case of a description of a temporal relationship, for example, when the temporal relationship is described as 'after', 'following', 'after', 'before', etc., 'immediately' or 'directly' Unless ' is used, cases that are not continuous may be included.

Although the first, second, etc. are used to describe various components, these components are not limited by these terms. These terms are only used to distinguish one component from another. Accordingly, the first component mentioned below may be the second component within the spirit of the present invention.

Each feature of the various embodiments of the present invention can be partially or wholly combined or combined with each other, technically various interlocking and driving are possible, and each embodiment can be implemented independently of each other or can be implemented together in a related relationship. may be

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. And in the drawings, the size and thickness of the device may be exaggerated for convenience. Like reference numerals refer to like elements throughout.

1 is a perspective view illustrating a display device according to an embodiment, FIG. 2 is a plan view illustrating a lower surface of a guide panel according to an embodiment, and FIG. 3 is a display device cut along line I-I' in FIG. 4 is a cross-sectional view showing the display device cut along line I-I' of FIG. 1, and FIG. 5 is a guide panel cut along line II-II' of FIG. It is one cross section.

1 to 5 , the liquid crystal display 100 of the embodiment includes a liquid crystal display panel 110 , a backlight unit including a guide panel 180 , an upper cover 120 and a bottom cover 130 . may include Here, the bottom cover 130 may be included in the configuration of the backlight unit.

The liquid crystal display panel 110 may include an upper substrate 113 , a lower substrate 111 , an upper polarizing plate 117 , and a lower polarizing plate 115 . Although not shown in the drawing, the liquid crystal display panel 110 may include a liquid crystal layer (not shown) between the upper substrate 113 and the lower substrate 111 , and is connected to the lower substrate 111 to be driven. It may include a driving printed circuit board (PCB, not shown) that provides a signal.

In the liquid crystal display panel 110 , liquid crystal cells constituting a pixel unit are arranged in a matrix form, and the liquid crystal cells adjust light transmittance according to image signal information transmitted from the driving PCB to display an image.

In the lower substrate 111 , a plurality of gate lines and a plurality of data lines may be disposed in a matrix form, and a thin film transistor (TFT) may be disposed in a region where the gate lines and the data lines cross each other.

A color filter may be disposed on the upper substrate 113 , but the present invention is not limited thereto.

The upper cover 120 may be disposed on the upper edge of the liquid crystal display panel 110 , and may be coupled to the guide panel 180 . The upper cover 120 is described by limiting a structure that covers all four edges of the liquid crystal display panel 110 , but is not limited thereto. For example, the upper cover 120 may have a structure that covers one or two or more edges of the liquid crystal display panel 110 .

The bottom cover 130 may have an open top surface. The bottom cover 130 may be coupled to the guide panel 180 . For example, the bottom cover 130 may be fastened to the guide panel 180 by a hook fastening structure, a screw fastening structure, or the like. The side surfaces of the bottom cover 130 may be in contact with the inner surface of the guide panel 180 , but the present invention is not limited thereto. The bottom cover 130 may be coupled to the guide panel 180 to constitute a backlight unit, but is not limited thereto. For example, the bottom cover 130 may be omitted.

The backlight unit may include a guide panel 180 , a light guide plate 140 , a light source 153 , optical sheets 160 , and a reflective sheet 170 .

The light source 153 may include at least one of a Cold Cathode Fluorescent Lamp (CCFL), an External Electrode Fluorescent Lamp (EEFL), and a Light Emitting Diode (LED), The present invention is not limited thereto. As the light source 153 of the embodiment, a light emitting diode will be described as an example. At least one light source 153 may be disposed on the light source substrate 151 .

The optical sheets 160 may include functions such as diffusion, light collection, and protection. For example, the optical sheets 160 may include at least one diffusion sheet 161 , and first and second prism sheets 163 and 165 , but are not limited thereto.

The diffusion sheet 161 may include a function for realizing uniform luminance by diffusing light from the light source 153 . The diffusion sheet 161 may be disposed on the light guide plate 140 . The diffusion sheet 161 may directly contact the upper surface of the light guide plate 140 . The lower surface of the diffusion sheet 161 may directly contact the upper surface of the light guide plate 140 . An area of the diffusion sheet 161 may be smaller than an area of the light guide plate 140 . For example, the area of the upper surface and the lower surface of the diffusion sheet 161 may be smaller than the area of the upper surface and the lower surface of the light guide plate 140 . In the drawings, the diffusion sheet 161 having a smaller area than that of the light guide plate 140 is described as an example, but the present invention is not limited thereto, and the area of the diffusion sheet 161 may be the same as the area of the light guide plate 140 . . An area of the diffusion sheet 161 may be larger than that of other optical sheets 160 . For example, the area of the upper surface and the lower surface of the diffusion sheet 161 may be larger than the area of the upper surface and the lower surface of the first prism sheet 163 . The area of the upper surface and the lower surface of the diffusion sheet 161 may be larger than the area of the upper surface and the lower surface of the second prism sheet 165 . The outer surfaces 161a and 161b of the diffusion sheet 161 may be disposed adjacent to the outer surfaces 143 of the light guide plate 140 .

The first and second prism sheets 163 and 165 may include a light collecting pattern having a triangular cross-section having mountains and valleys. The first and second prism sheets 163 and 165 may include a function of vertically condensing light diffused from the diffusion sheet 161 in the direction of the liquid crystal display panel 110 . Although the first and second prism sheets 163 and 165 have a structure in which the light collecting patterns are arranged in two orthogonal to each other, the structure is not limited thereto, and may be at least three or more. The optical sheets 160 may include protective sheets disposed on the first and second prism sheets 163 and 165 to protect the light collecting pattern.

The light guide plate 140 may be disposed parallel to the light source 153 in a horizontal direction. The light guide plate 140 may be disposed directly under the liquid crystal display panel 110 , and may be disposed under the optical sheets 160 . One side of the light guide plate 140 facing the light source 153 is an area on which light is incident, and may be defined as a light incident part 143 . The light guide plate 140 converts incident light into surface light and provides it to the optical sheets 160 . The light guide plate 140 may be made of a material having high transmittance and high strength. For example, the light guide plate 140 may be polymethy-methacrylate (PMMA), but is not limited thereto. The light guide plate 140 may have a flat upper surface, a wedge-shaped lower surface inclined with respect to the light incident surface, and a plate-shaped upper surface and a lower surface both parallel to each other.

The reflective sheet 170 may be disposed under the lower surface of the light guide plate 140 to reflect light traveling in the lower direction of the light guide plate 140 toward the liquid crystal display panel 110 to improve luminous efficiency.

The guide panel 180 may have a rectangular frame shape. The guide panel 180 may support or fix the liquid crystal display panel 110 , the light source 153 , the light source substrate 151 , the light guide plate 140 , the optical sheets 160 , and the reflective sheet 170 . . To this end, the guide panel 180 may include a stepped structure, a protruding structure, and a groove structure. The step structure, the protrusion structure, and the groove structure may be disposed on the lower surface of the guide panel 180 . The guide panel 180 may include first side surfaces 181 parallel to the minor axis and second side surfaces 183 parallel to the major axis direction. The short axis direction may be parallel to the first direction X-X', and the long axis direction may be parallel to a second direction Y-Y' perpendicular to the first direction X-X'. The first side surfaces 181 may face each other in a second direction (Y-Y'), and the second side surfaces 183 may face each other in the first direction (X-X'). .

The guide panel 180 may include a first support part 190 and a second support part 195 . The first and second support parts 190 and 195 may be disposed on the lower surface of the guide panel 180 .

The first support part 190 may be disposed under the first side surfaces 181 . The number of the first support parts 190 may be at least two. The first support parts 190 may be spaced apart from each other by a predetermined interval. The first support part 190 may include guide protrusions 191 protruding downward of the guide panel 180 and a contact part 193 disposed between the guide protrusions 191 .

The guide protrusions 191 may be spaced apart from each other by a predetermined interval. The guide protrusion 191 may extend in the first direction (X-X'). The guide protrusion 191 may prevent the contact portion 193 from flowing.

A seating portion 192 in contact with the contact portion 193 may be disposed between the guide protrusions 191 . The seating part 192 may connect between the guide protrusions 191 and provide a space in which the contact part 193 is disposed. An area of the seating part 192 may be larger than an area of the contact part 193 . The seating portion 192 may protrude downward of the guide panel 180 . The height of the seating part 192 with respect to the lower surface of the guide panel 180 may be lower than the height of the guide protrusions 191 . Cross sections of the guide protrusions 191 and the seating portion 192 may have a stepped structure. That is, the contact portion 193 is not separated from the first support portion 190 due to the step structure between the guide protrusions 191 and the seating portion 192 . The guide protrusions 191 and the seating part 192 may be formed when the guide panel 180 is manufactured. For example, the guide protrusions 191 and the seating portion 192 may be formed on the lower surface of the guide panel 180 by an injection process or the like.

The contact part 193 may be disposed on the seating part 192 . The contact portion 193 may include an adhesive material on its upper surface. The contact part 183 may be joined to the seating part 192 by the adhesive material in a configuration separate from the seating part 192 . An upper surface of the miscellaneous part 193 may face the seating part 192 . The contact portion 193 may be a buffer structure capable of absorbing an impact caused by friction. For example, the contact portion 193 may be a pad. The contact portion 193 may overlap an edge of the diffusion sheet 161 . The entire lower surface of the contact portion 193 may overlap the upper surface of the edge of the diffusion sheet 161 . The contact portion 193 may directly contact the diffusion sheet 161 . The end of the contact portion 193 may directly contact the upper surface of the edge of the diffusion sheet 161 . The contact portion 193 may reduce friction between the diffusion sheet 161 and the light guide plate 140 by pressing the diffusion sheet 161 in the direction of the light guide plate 140 .

The second support part 195 may be disposed under the second side surfaces 183 . The second support part 195 may be disposed in a second direction (Y-Y'). The second support part 195 may extend in a second direction (Y-Y') corresponding to the long axis direction of the guide panel 180 . The second support part 195 may protrude downward of the guide panel 180 . The second support part 195 may overlap an edge of the diffusion sheet 161 . The second support part 195 may be spaced apart from the diffusion sheet 161 by a predetermined interval. The second support part 195 does not directly contact the diffusion sheet 161 . For example, a predetermined distance W may be provided between the protruding end of the second support 195 and the upper surface of the diffusion sheet 161 . The distance W between the second support part 195 and the diffusion sheet 161 provides a certain degree of freedom in the long axis direction of the diffusion sheet 161 when the diffusion sheet 161 is contracted or expanded. 161), it is possible to improve the unevenness caused by the bending. In particular, since the phenomenon of staining due to the bending of the diffusion sheet 161 is concentrated around the light source 153 arranged in parallel with the long axis direction of the guide panel 1680, the embodiment provides for the second support 195 and the diffusion sheet ( 161) may have a predetermined interval (W) between them.

The embodiment may include the reflectors 171 disposed on side surfaces of the light guide plate 140 that do not face the light source 153 . The reflector 171 may improve light efficiency by reflecting the light emitted from the side surface of the light guide plate 140 into the light guide plate 140 .

In the embodiment, the diffusion sheet 161 disposed at the bottom of the optical sheets 160 extends outward more than the other sheets, and the first and second support portions 190 and 195 of the guide panel 180 are the diffusion sheets. By simultaneously pressing and supporting the sheet 161 and the light guide plate 140 , the generation of foreign substances due to flow and friction between the diffusion sheet 161 and the light guide plate 140 may be improved. In the embodiment, the occurrence of foreign matter between the diffusion sheet 161 and the light guide plate 140 may be improved, thereby improving image quality deterioration such as spotting and light leakage.

6 is a plan view illustrating a lower surface of a guide panel according to another exemplary embodiment, and FIG. 7 is a perspective view illustrating a cross-section of a display device according to another exemplary embodiment.

As shown in FIGS. 6 and 7 , in another embodiment, all configurations except for the first support part 290 may adopt the technical characteristics of the display device of the embodiment of FIGS. 1 to 5 .

In another embodiment, the first support 290 may be disposed under the first side surfaces 181 . The number of the first support parts 290 may be at least two. The first support parts 290 may be spaced apart from each other by a predetermined interval. The first support part 290 may include a guide protrusion 291 protruding downward of the guide panel 180 and a contact part 293 disposed inside the guide protrusion 291 .

The guide protrusion 291 may have a structure surrounding the contact portion 293 . The guide protrusion 291 may have a structure in which four partition walls are connected in a top view, but is not limited thereto. For example, the guide protrusion 291 may be a partition wall having a top view of a circular structure, an elliptical structure, a triangular structure, and a polygonal structure. The guide protrusion 291 may prevent the contact portion 293 from flowing.

A seating portion 292 in contact with the contact portion 293 may be disposed between the guide protrusions 291 . The seating portion 292 may correspond to the shape of the guide protrusion 291 . For example, the seating portion 292 may have a square plate structure in which a top view extends from the guide protrusion 291 having a structure of four partition walls. The seating portion 292 may extend from the guide protrusion 291 . The seating part 292 may provide a space in which the contact part 293 is disposed. An area of the seating part 292 may be larger than an area of the contact part 293 . The seating portion 292 may protrude downward of the guide panel 180 . A height of the seating part 292 with respect to a lower surface of the guide panel 180 may be lower than a height of the guide protrusion 291 . Cross sections of the guide protrusion 291 and the seating portion 292 may have a stepped structure. That is, the contact portion 293 is not separated from the first support portion 290 due to the step structure between the guide protrusion 291 and the seating portion 292 . The guide protrusion 291 and the seating portion 292 may be formed when the guide panel 180 is manufactured. For example, the guide protrusion 291 and the seating portion 292 may be formed on the lower surface of the guide panel 180 by an injection process or the like.

The contact part 293 may be disposed on the seating part 292 . The contact portion 293 may include an adhesive material on its upper surface. The contact portion 283 is separated from the seating portion 292 and may be bonded to the seating portion 292 by the adhesive material. An upper surface of the miscellaneous part 293 may face the seating part 292 . The contact portion 293 may have a buffer structure capable of absorbing an impact caused by friction. For example, the contact portion 293 may be a pad. The contact portion 293 may overlap an edge of the diffusion sheet 161 . The entire lower surface of the contact part 293 may overlap the upper surface of the edge of the diffusion sheet 161 . The contact portion 293 may directly contact the diffusion sheet 161 . An end of the contact portion 293 may directly contact an upper surface of an edge of the diffusion sheet 161 . The contact portion 293 may reduce friction between the diffusion sheet 161 and the light guide plate 140 by pressing the diffusion sheet 161 in the direction of the light guide plate 140 .

In another embodiment, the diffusion sheet 161 disposed at the bottom of the optical sheets 160 extends more outward than the other sheets, and the first and second support portions 290 and 195 of the guide panel 180 are By simultaneously pressing and supporting the diffusion sheet 161 and the light guide plate 140 , the generation of foreign substances due to flow and friction between the diffusion sheet 161 and the light guide plate 140 may be improved. In another embodiment, by improving the occurrence of foreign matter between the diffusion sheet 161 and the light guide plate 140 , it is possible to improve image quality deterioration such as spotting and light leakage.

In another embodiment, the diffusion sheet ( 161), and the stability of the support structure can be improved.

8 is a perspective view illustrating a cross-section of a display device according to another exemplary embodiment, and FIG. 9 is a cross-sectional view illustrating the display device of FIG. 8 .

As shown in FIGS. 8 and 9 , in another embodiment, all components except for the first support part 390 may adopt the technical characteristics of the display device of the embodiment of FIGS. 1 to 5 . Although not shown in the drawings, the guide panel 180 according to another embodiment may include a second support portion ( 195 in FIGS. 2 to 6 ).

The first support part 390 according to another embodiment may be disposed under side surfaces parallel to the minor axis direction of the guide panel 180 . The first support part 390 may have a structure surrounding both side surfaces parallel to the minor axis direction of the light guide plate 140 . The side surfaces may be side surfaces of the light guide plate 140 that are symmetrical to each other in the second direction (Y-Y'). The number of the first support parts 390 may be at least two. The first support parts 390 may be spaced apart from each other by a predetermined interval. The first support 390 may include an adhesive material on one surface. The first support part 390 may be an adhesive tape having a certain elasticity. The first support portion 390 includes a side portion 391 corresponding to the side surface of the light guide plate 140 , an upper portion 393 extending from the side portion 391 and disposed on the upper surface of the light guide plate 140 , and the side portion It may include a lower portion 395 extending from 391 and disposed on the lower surface of the light guide plate 140 . The first support part 390 may be divided into the side part 391 , the upper part 393 , and the lower part 395 by a cross-sectional structure. The side portions 391 may face the reflection portions 171 disposed on both side surfaces of the light guide plate 140 . The side portion 391 may be in direct contact with the reflection portion 171 . For example, the side portion 391 may be attached to the outer surface of the reflective portion 171 by an adhesive material on one surface. The upper portion 393 may be bent in a vertical direction from the side portion 391 . The upper portion 393 may be disposed on the upper surface of the edge of the diffusion sheet 161 . The upper portion 393 may be in direct contact with an upper surface of the edge of the diffusion sheet 161 . For example, the upper portion 393 may be attached to the upper surface of the edge of the diffusion sheet 161 by an adhesive material on one surface. The lower portion 395 may be bent in a vertical direction from the side portion 391 . The lower portion 395 may be disposed on an edge lower surface of the reflective sheet 170 . The lower portion 395 may be in direct contact with an edge lower surface of the reflective sheet 170 . For example, the lower portion 395 may be attached to the lower edge of the reflective sheet 170 by an adhesive material on one surface. The first support part 390 may allow the diffusion sheet 161 , the light guide plate 140 , and the reflective sheet 170 to be in surface contact with each other in a third direction (Z-Z′). Here, the third direction Z-Z' may be defined as the vertical direction of the cross-section of the display device.

In another embodiment, the diffusion sheet 161 , the light guide plate 140 , and the reflection sheet 170 are formed by the first support 390 surrounding all of the diffusion sheet 161 , the light guide plate 140 , and the reflection sheet 170 . It is possible to reduce friction between the diffusion sheet 161 , the light guide plate 140 , and the reflective sheet 170 even when the diffusion sheet 161 is contracted and expanded.

In another embodiment, the diffusion sheet 161 , the light guide plate 140 , and the reflective sheet 170 are stably supported by the first support part 390 having flexibility to each other in different shrinkage and expansion coefficients without friction. can do.

In another embodiment, by improving the occurrence of foreign matter between the diffusion sheet 161 and the light guide plate 140 , it is possible to improve image quality deterioration such as spotting and light leakage.

Features, structures, effects, etc. described in the above embodiments are included in at least one embodiment, and are not necessarily limited to only one embodiment. Furthermore, features, structures, effects, etc. illustrated in each embodiment can be combined or modified for other embodiments by a person skilled in the art to which the embodiments belong. Accordingly, the contents related to such combinations and modifications should be interpreted as being included in the scope of the embodiments.

In the above, the embodiment has been mainly described, but this is only an example and not a limitation on the embodiment, and those of ordinary skill in the art to which the embodiment belongs may have several not illustrated above in the range that does not deviate from the essential characteristics of the embodiment. It can be seen that variations and applications of branches are possible. For example, each component specifically shown in the embodiment can be implemented by modification. And differences related to such modifications and applications should be interpreted as being included in the scope of the embodiments set forth in the appended claims.

180: guide panel
190, 290, 390: first support
191, 291: guide turn
192, 292: seating part
193, 293: contact
195: second support

Claims (9)

display panel;
a backlight unit disposed under the display panel and including a light source, optical sheets, a light guide plate, and a reflective sheet;
a guide panel disposed on side surfaces of the display panel and the backlight unit, a portion of the side surface extending between the display panel and the backlight unit;
at least one or more first support portions provided under both side surfaces parallel to the minor axis of a part of the extended guide panel; and
and a second support part provided under both side surfaces parallel to the long axis direction of a part of the extended guide panel,
The optical sheets include a diffusion sheet at a lowermost portion, and an edge of the diffusion sheet protrudes outward from the other sheets to overlap the first and second supports,
The first support portion includes inner and outer guide projections protruding downward from the lower surface of the guide panel, a seating portion disposed between the guide projections, and a contact portion disposed on the seating portion,
The end of the contact part is in contact with the upper surface of the edge of the diffusion sheet so that the inner and outer guide protrusions are spaced apart from the light guide plate,
The inner guide protrusion is spaced apart from the ends of the other sheets.
delete The method of claim 1,
The inner and outer guide protrusions and the seating portion constitute a stepped structure.
The method of claim 1,
The contact portion is a pad having a buffer structure having an adhesive material on one surface, and is in direct contact with an upper surface of an edge of the diffusion sheet.
The method of claim 1,
The guide protrusion further includes guide protrusions on both sides in addition to the inner and outer guide protrusions so as to surround the contact portion.
The method of claim 1,
The first support part surrounds the diffusion sheet, the light guide plate, and the reflective sheet.
7. The method of claim 6,
The first support portion may include side portions corresponding to both side surfaces of the light guide plate;
an upper portion extending from the side portion and disposed on an upper surface of the light guide plate; and
and a lower portion extending from the side portion and disposed on a lower surface of the light guide plate.
The method of claim 1,
The second support portion protrudes in a lower direction of the guide panel and extends in the long axis direction.
The method of claim 1,
The second support portion is spaced apart from the upper surface of the diffusion sheet by a predetermined distance.

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