KR101984037B1 - Liquid crystal display device - Google Patents

Abstract

A liquid crystal display device according to the present invention for preventing occurrence of dark portions due to overlapping between a panel supporting member for supporting a liquid crystal display panel and an effective display region includes a liquid crystal display panel having an effective display region and a non-display region; A backlight unit for emitting light to the liquid crystal display panel; A panel supporting member for supporting a non-display area of the liquid crystal display panel and a border area of the effective display area; A bottom cover for receiving the backlight unit and supporting the panel support member; And a front case enclosing a non-display area of the liquid crystal display panel and a side surface of the panel support member, wherein the edge area of the effective display area is irradiated with light transmitted through the panel support member.

Description

[0001] LIQUID CRYSTAL DISPLAY DEVICE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device capable of preventing occurrence of dark portions due to overlapping between a panel supporting member for supporting the liquid crystal display panel and an effective display area.

A typical liquid crystal display device displays an image using a thin film transistor as a switching element. Such a liquid crystal display device is widely used as a display device for a notebook computer, a tablet computer, a smart phone, a portable display device, and a portable information device in addition to a display device for a television or a monitor. Since such a liquid crystal display device is not a self-emission type, an image is displayed using the light emitted from the backlight unit.

FIG. 1 is a cross-sectional view schematically showing a part of a general liquid crystal display device, and FIG. 2 is a view for explaining a supporting structure of the liquid crystal display panel and the guide panel shown in FIG.

1, a typical liquid crystal display device includes a liquid crystal display panel 10, a back light unit 20, a bottom cover 30, a guide panel 40, a front case 50 is provided.

The liquid crystal display panel 10 is composed of a lower substrate (not shown) and an upper substrate (not shown) which are adhered to each other with a liquid crystal layer sandwiched therebetween, and includes an effective display area DA And an inactive area IA (or a dummy area) surrounding the peripheral area of the effective display area AA. The liquid crystal display panel 10 displays a desired image in the effective display area AA by driving the liquid crystal of the liquid crystal layer according to the data voltage applied to each pixel to adjust the light transmittance of each pixel.

The backlight unit 20 is disposed below the liquid crystal display panel 10 and irradiates light on the lower surface of the liquid crystal display panel 10. [

The bottom cover 30 is formed to have a storage space to house the backlight unit 20 and support the guide panel 40.

The guide panel 40 supports a bottom edge portion of the liquid crystal display panel 10 which is superimposed on the non-display area IA of the liquid crystal display panel 10. The guide panel 40 is formed of a black polymer resin, which is an opaque material. The guide panel 40 includes the panel support portion 42 and the guide side wall 44.

The panel supporting portion 42 supports a bottom edge portion of the liquid crystal display panel 10. The panel supporting portion 42 has an area capable of stably supporting the liquid crystal display panel 10 and can be fixed to the liquid crystal display panel 10 within a range that does not cover the effective display area AA of the liquid crystal display panel 10. [ The non-display area IA of the display area 10 is supported.

The guide sidewall 44 is vertically formed from the panel supporting portion 42 and surrounds the side wall of the bottom cover 30. [

The front case 50 is formed in the shape of a rectangular band so that one side thereof has a cross-sectional shape of "┏" shape, and covers the upper surface edge portion of the liquid crystal display panel 10 and each side surface of the guide frame 40.

3, by minimizing the non-display area IA of the liquid crystal display panel 10, the liquid crystal display device 10 having the same effective display area AA and having a narrow bezel width, Is being developed.

However, in the liquid crystal display device having the narrow bezel width, the panel supporting portion 42 must have an area capable of stably supporting the liquid crystal display panel 10, Display area IA of the panel 10 in accordance with the minimization of the non-display area IA. The panel support portion 42 of the guide panel 40 is superimposed on the effective display area AA of the liquid crystal display panel 10 to stably support the liquid crystal display panel 10, Light from the backlight unit 20 is not irradiated to the edge area EA of the effective display area AA overlaid on the panel supporting part 42 by the light blocking of the panel supporting part 42. [

As a result, in the liquid crystal display device in which the non-display area IA is minimized to reduce the width of the bezel, an overlapping area is generated between the panel support part 42 of the guide panel 40 and the effective display area AA, There is a problem that a dark portion occurs in the edge area EA of the effective display area AA overlapping the panel supporting part 42 of the guide panel 40. [

SUMMARY OF THE INVENTION It is an object of the present invention to provide a liquid crystal display device capable of preventing the occurrence of dark portions due to overlapping between a panel supporting member for supporting a liquid crystal display panel and an effective display region.

According to an aspect of the present invention, there is provided a liquid crystal display device including: a liquid crystal display panel having an effective display area and a non-display area; A backlight unit for emitting light to the liquid crystal display panel; A panel supporting member for supporting a non-display area of the liquid crystal display panel and a border area of the effective display area; A bottom cover for receiving the backlight unit and supporting the panel support member; And a front case enclosing a non-display area of the liquid crystal display panel and a side surface of the panel support member, wherein the edge area of the effective display area is irradiated with light transmitted through the panel support member. Here, the panel supporting member is made of a transparent material.

Wherein the panel support member includes a panel support portion for supporting a non-display region of the liquid crystal display panel and a border region of the effective display region, and the panel support portion, which overlaps the border region of the effective display region, The plurality of photorefractive layers may be formed to have different refractive indexes along the first direction or a second direction perpendicular to the first direction.

Wherein the panel supporting member supports the lower surface of the liquid crystal display panel and advances the light incident from the backlight unit to the entire area of the effective display area including the edge area; And a guide panel coupled to a side surface of the bottom cover and supporting a bottom edge portion of the optical member overlapping a bottom edge portion of the liquid crystal display panel.

According to the present invention, the light transmitted through the panel support member made of a transparent material is irradiated to the edge region of the effective display region, thereby stably supporting the liquid crystal display panel through the panel support member, There is an effect that it is possible to prevent a dark portion occurring in a border region of the overlapping effective display region.

1 is a cross-sectional view schematically showing a part of a general liquid crystal display device.
FIG. 2 is a view for explaining a supporting structure of the liquid crystal display panel and the guide panel shown in FIG. 1. FIG.
FIGS. 3 and 4 are diagrams for explaining an arm portion generated in a border region of an effective display region overlapping with a guide panel by minimizing a non-display region in a general liquid crystal display device. FIG.
5 is a cross-sectional view illustrating a liquid crystal display device according to a first embodiment of the present invention.
FIG. 6 is a view for explaining light incident on a border region of the effective display region through the panel support shown in FIG. 5. FIG.
FIGS. 7 to 11 are views for explaining various modifications of the panel support member shown in FIGS. 5 and 6. FIG.
12 is a cross-sectional view illustrating a liquid crystal display device according to a second embodiment of the present invention.
FIG. 13 is a view for explaining light incident on the edge region of the effective display region through the optical member shown in FIG. 12; FIG.
Figs. 14 to 18 are views for explaining various modifications of the optical member shown in Figs. 12 and 13. Fig.
19 is a diagram showing the luminance distribution of the effective display region in the liquid crystal display device according to the embodiment of the present invention.

The meaning of the terms described herein should be understood as follows.

The word " first, " " second, " and the like, used to distinguish one element from another, are to be understood to include plural representations unless the context clearly dictates otherwise. The scope of the right should not be limited by these terms.

It should be understood that the terms "comprises" or "having" does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

It should be understood that the term " at least one " includes all possible combinations from one or more related items. For example, the meaning of " at least one of the first item, the second item and the third item " means not only the first item, the second item or the third item, but also the second item and the second item among the first item, Means any combination of items that can be presented from more than one.

The term " on " means not only when a configuration is formed directly on top of another configuration, but also when a third configuration is interposed between these configurations.

Hereinafter, preferred embodiments of the liquid crystal display according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 5 is a cross-sectional view illustrating a liquid crystal display device according to a first embodiment of the present invention, and FIG. 6 is a view for explaining light incident on a border region of an effective display region through the panel support shown in FIG. 5 .

5 and 6, the liquid crystal display device according to the first embodiment of the present invention includes a liquid crystal display panel 110 having an effective display area AA and a non-display area IA, a liquid crystal display panel 110, A back light unit 120 for emitting light to the liquid crystal display panel 110 and a panel support member 130 for supporting a border area EA of the non-display area IA of the liquid crystal display panel 110 and the effective display area AA A bottom cover 140 which houses the backlight unit 120 and supports the panel supporting member 130 and a non-display area IA of the liquid crystal display panel 110 and the panel supporting member 130, And a front case 150 surrounding the side surface of the front case 150.

The liquid crystal display panel 110 includes an effective display area DA including a plurality of pixels for displaying an image and an inactive area IA surrounding the peripheral area of the effective display area AA Dummy area). The liquid crystal display panel 110 displays the desired image in the effective display area AA by driving the liquid crystal of the liquid crystal layer according to the data voltage applied to each pixel to adjust the light transmittance of each pixel. The liquid crystal display panel 110 includes a lower substrate 112, an upper substrate 114, a lower polarizing film 116, and an upper polarizing film 118.

The lower substrate 112 includes an effective display area AA and a non-display area IA surrounding the periphery of the effective display area AA.

The effective display area AA includes a plurality of gate lines (not shown), a plurality of data lines (not shown), and a plurality of pixels (not shown) formed in each pixel region so as to intersect with each other to define pixel regions .

Each pixel may include a thin film transistor (not shown) connected to a gate line and a data line, a pixel electrode connected to the thin film transistor, and a common electrode formed adjacent to the pixel electrode and supplied with a common voltage.

The non-display area IA is formed with a plurality of gate lines and a plurality of data lines, a link wiring formed in the non-display area IA to supply signals to the corresponding lines, (Not shown). The non-display area IA has a minimum area such that the bezel width of the liquid crystal display device is reduced.

The upper substrate 114 includes a black matrix (not shown) defining an aperture region of each pixel, and a color filter layer formed in the aperture region and filtering the light incident through the liquid crystal layer with predetermined color light. The upper substrate 114 is adhered to the lower substrate 112 with the liquid crystal layer interposed therebetween.

A specific configuration of the lower substrate 112 and the upper substrate 114 may be a driving mode of the liquid crystal layer such as TN (Twisted Nematic) mode, VA (Vertical Alignment) mode, IPS A Fringe field switching (FFS) mode, and the like.

The lower polarizing film 116 is attached to the lower surface of the lower substrate 112 to polarize light emitted from the backlight unit 120 to the lower substrate 112.

The upper polarizing film 118 is attached to the upper surface of the upper substrate 114 to polarize light emitted to the outside through the upper substrate 114.

On the other hand, an optical member (not shown) for three-dimensional image may be additionally attached or disposed on the upper surface of the upper polarizing film 118. In this case, the left eye image and the right eye image are temporally or spatially divided and displayed in the liquid crystal display panel 110 according to the display method of the three-dimensional image, and the optical member for three-dimensional image separates the left eye image and the right eye image, Lt; / RTI > Here, the optical member for three-dimensional image is attached to the upper surface of the upper polarizing member, and a three-dimensional image of a retarder film or a non-spectacles system for providing a three-dimensional image of a polarization method to a viewer And a lens film for providing the lens.

The backlight unit 120 is disposed below the liquid crystal display panel 110 and irradiates light on the lower surface of the liquid crystal display panel 110. [ To this end, the backlight unit 120 includes a light guide plate 121, a light source module 123, a reflective sheet 125, and an optical sheet 127.

The light guide plate 121 is formed in the shape of a flat plate (or wedge) so as to have at least one light entrance portion provided on at least one side face. The light guide plate 121 guides the light incident from the light source module 123 through the light-incident portion toward the liquid crystal display panel 110.

The light source module 123 is arranged to face the light entrance portion of the light guide plate 121 and emits light to the light guide plate 121. To this end, the light source module 123 includes an LED (Light Emitting Diode) array substrate 123a, and a plurality of LED packages 123b.

The LED array substrate 123a is a flexible flexible printed circuit board (FPCB) having flexibility. The LED array substrate 123a is bent in an " L " shape to cover the light- And can be attached to the cover 140. The LED array substrate 123a is provided with a driving power supply line for supplying driving power to each of the plurality of LED packages 123b and is connected to a backlight driving circuit (not shown) through a signal cable .

Each of the plurality of LED packages 123b is mounted on the LED array substrate 123a at regular intervals so as to face the light-incident portion of the light guide plate 121 and to be spaced apart by a predetermined distance. Each of the plurality of LED packages 123b emits light by a driving power source supplied from a driving power source line of the LED array substrate 123a to irradiate light having a predetermined brightness to a light-incoming portion of the light guide plate 121. [ The light emitted from each of the plurality of LED packages 123b is incident on the light incoming portion of the light guide plate 121 and then reflected and refracted inside the light guide plate 121 to be transmitted through the optical sheet 127 to the liquid crystal display panel 110).

The reflective sheet 125 is disposed on the lower surface of the light guide plate 121 and reflects incident light passing through the lower surface of the light guide plate 121 toward the liquid crystal display panel 110. At this time, the edge portion of the reflective sheet 125 may be bent so as to surround the side surface of the light guide plate 121 except for the light entrance portion of the light guide plate 121.

The optical sheet 127 is disposed on the light guide plate 121 to improve the brightness characteristic of light traveling from the light guide plate 121 toward the liquid crystal display panel 110. [ To this end, the optical sheet 127 may be configured to include at least one diffusion sheet and a prism sheet.

The panel supporting member 130 supports the bottom edge portion of the liquid crystal display panel 110, that is, the non-display area IA of the liquid crystal display panel 110 and the edge area EA of the effective display area AA, And transmits the light incident from the light unit 120 toward the edge area EA of the effective display area AA. To this end, the panel support member 130 is configured to include a panel support 132 and a guide sidewall 134 such that the cross-section of one side has a "┏", "┗", or "┣" . The panel supporting member 130 is formed of a transparent material having a transmittance of 10% to 100% and capable of transmitting incident light, and having a predetermined refractive index. For example, the panel supporting member 130 may be formed of a plastic material such as polycarbonate, polymethylmethacrylate, or polysulfone.

The panel support 132 is formed to have a constant area and width to support the non-display area IA of the liquid crystal display panel 110 and the edge area EA of the effective display area AA. The panel support 132 serves as a physical support for stably supporting the liquid crystal display panel 110 and at the same time, the light incident from the backlight unit 120 is guided to the outside of the effective display area AA And is transmitted through the edge area EA. That is, the panel supporting part 132 is formed of a transparent material having an area (or width) overlapping the edge area EA of the effective display area AA for stable support of the liquid crystal display panel 110 The incident light is transmitted to the edge area EA of the effective display area AA without interrupting the incident light. A part of the light IL emitted from the backlight unit 120 is transmitted through the panel supporting part 132 made of a transparent material and irradiated to the edge area EA of the effective display area AA, As a result, dark areas are not generated in the edge area EA of the effective display area AA overlapping the panel supporting part 132. [

The guide sidewall 132 is formed to be perpendicular to the outer surface of the panel support 132 to cover the side surface of the bottom cover 140 or each side surface of the bottom cover 140 and the liquid crystal display panel 110.

The bottom cover 140 is formed in a box shape so as to have a storage space for storing the backlight unit 120. The bottom cover 140 includes a bottom plate that supports the backlight unit 120 and a side wall that is bent perpendicularly from the bottom plate and supports the panel support portion 132 of the panel support member 130. The side wall of the bottom cover 30 may be coupled to the guide side wall 134 of the panel supporting member 130 by a side coupling method using a hook or a screw.

The front case 150 is formed in the shape of a rectangular band so as to have a cross section in the form of a "┏" shape so that the front edge of the liquid crystal display panel 110, that is, the front surface of the non- 130).

In the liquid crystal display device according to the first embodiment of the present invention, light transmitted through the panel support member 130 made of a transparent material is irradiated to the edge area EA of the effective display area AA, The edge portions EA of the effective display area AA can be prevented from being darkened while stably supporting the liquid crystal display panel 110 through the through holes 130.

FIGS. 7 to 11 are views for explaining various modifications of the panel support member shown in FIGS. 5 and 6, which is a modification of the structure of the panel support portion so that the amount of light irradiated to the edge region of the effective display region is increased . Hereinafter, only the panel supporting portion will be described.

7, the panel supporting portion 132 of the panel supporting member 130 according to the first modification may include a concave and convex pattern 132a formed to overlap the edge area IA of the effective display area AA, .

The concavo-convex pattern 132a may be regularly or irregularly formed on the upper surface of the panel supporting portion 132 overlapping the edge area IA of the effective display area AA, The amount of light irradiated to the edge area IA of the effective display area AA is increased by converging the light toward the edge area EA. For this, the concavo-convex pattern 132a may be formed in a stripe shape having a pyramid shape, a truncated pyramid shape, or a triangular shape, but is not limited thereto and may be formed in a concavo-convex shape of various structures .

8, the panel supporting portion 132 of the panel supporting member 130 according to the second modification includes a plurality of light refraction layers formed to overlap the edge area IA of the effective display area AA, (132b1, 132b2, 132b3).

Each of the plurality of photorefractive layers 132b1, 132b2 and 132b3 is horizontally (X-axis) (or a panel supporting part (not shown)) on the panel supporting part 132 which overlaps the edge area IA of the effective display area AA 132) of the effective display area AA to increase the amount of light irradiated to the edge area IA of the effective display area AA.

The refractive index of each of the plurality of photorefractive layers 132b1, 132b2, and 132b3 may be set to increase as the amount of light irradiated to the edge area EA is closer to the non-display area IA. For example, the refractive index of each of the plurality of photorefractive layers 132b1, 132b2, and 132b3 may be set to gradually increase from the inside of the rim area EA toward the non-display area IA. The refractive index of each of the plurality of photorefractive layers 132b1, 132b2 and 132b3 may be set by a combination of different materials having a light transmittance and a refractive index or may be set by adjusting a composition ratio of a single material having a light transmittance and a refractive index have.

8, the plurality of photorefractive layers 132b1, 132b2, and 132b3 are formed along the X-axis. However, the present invention is not limited thereto, and the plurality of photorefractive layers 132b1, 132b2, 132b3 may be formed so as to have inclined surfaces of a constant inclination. In this case, light passing through the plurality of photorefractive layers 132b1, 132b2, and 132b3 is refracted more than in the inclined plane, so that more light is emitted to the outside of the edge area IA of the effective display area AA It can proceed to the negative side.

9, the panel supporting portion 132 of the panel supporting member 130 according to the third modification includes a plurality of light refraction layers formed to overlap the edge area IA of the effective display area AA, (132c1, 132c2, 132c3).

Each of the plurality of photorefractive layers 132c1, 132c2 and 132c3 is provided with a Z-axis (or a panel supporting part (not shown)) on the panel supporting part 132, which overlaps the edge area IA of the effective display area AA 132 in the thickness direction of the effective display area AA), thereby increasing the amount of light irradiated to the edge area IA of the effective display area AA. For example, the refractive index of each of the plurality of photorefractive layers 132c1, 132c2, 132c3 may be set so as to gradually increase from the lower surface of the panel supporting portion 132 toward the upper surface. The refractive index of each of the plurality of photorefractive layers 132c1, 132c2 and 132c3 may be set by a combination of dissimilar materials having a light transmittance and a refractive index or may be set by adjusting a composition ratio of a single substance having a light transmittance and a refractive index have.

The panel supporting portion 132 of the panel supporting member 130 according to the fourth modified example includes the light diffusing member 132d added therein as shown in Fig.

The light diffusion member 132d is formed of a plurality of air pores or a plurality of bead particles and is formed inside the panel support 132 by being added to a transparent material forming the panel support 132. The light diffusion member 132d increases the amount of light irradiated to the edge area IA of the effective display area AA by diffusing incident light.

Each of the plurality of bead particles may be formed of a single material or a heterogeneous material. Further, each of the plurality of bead particles may be configured to include a core portion and a skin portion surrounding the core portion. In this case, the light incident on the bead particle is refracted when the light passes through the skin portion, passes through the core portion, and passes through the skin portion after passing through the core portion. It can be refracted again when passing.

11, the panel supporting portion 132 of the panel supporting member 130 according to the fourth modified example includes a refractive layer (not shown) formed to overlap the edge area IA of the effective display area AA 132e.

The refraction layer 132e is formed on the upper surface of the panel supporting part 132 which overlaps the edge area IA of the effective display area AA to have a predetermined thickness to diffuse the light diffused by the light diffusion member 132d The amount of light irradiated to the edge area IA of the effective display area AA is increased by refraction to the edge area IA of the effective display area AA.

The refraction layer 132e may be formed on the lower surface of the panel support 132 which overlaps the edge area IA of the effective display area AA to a predetermined thickness. In this case, the light incident on the panel supporting portion 132 is refracted by the refraction layer 132e, and the refracted light is diffused by the light diffusion member 132d and is reflected by the edge region of the effective display region AA (IA).

The refraction layer 132e may be formed on the upper surface and the lower surface of the panel support 132 overlapping the edge area IA of the effective display area AA with a constant thickness. In this case, the light incident on the panel supporting portion 132 is refracted by the refraction layer 132e formed on the lower surface of the panel supporting portion 132, is diffused by the light diffusing member 132d, 132 are refracted by the refraction layer 132e formed on the upper surface of the effective display area AA and irradiated to the edge area IA of the effective display area AA.

On the other hand, the panel supporting portion 132 according to another modified example may be constituted by a combination of the panel supporting portions according to the first to fourth modified examples described above. For example, the panel supporting part 132 according to another modified example is made of a transparent material, and the protrusion pattern 132a, the plurality of photorefractive layers 132b1, 132b2, 132b3, the plurality of photorefractive layers 132c1 , 132c2, 132c3, the light diffusion member 132d, and the refraction layer 132e may be selectively combined.

FIG. 12 is a cross-sectional view for explaining a liquid crystal display device according to a second embodiment of the present invention, FIG. 13 is a view for explaining light incident on a border region of an effective display region through the optical member shown in FIG. 12 , Which is a modification of the configuration of the panel supporting member. Hereinafter, only different configurations will be described.

The panel support member 230 includes a guide panel 232, and an optical member 234.

The guide panel 232 is formed in the shape of a rectangular band so that the cross section of one side has "┗" or "┣" shape so as to include the panel supporting portion 232a and the guide side wall 232b. The guide panel 232 is formed of a black color polymer resin, which is an opaque material.

The panel supporting portion 232a is formed to have a certain area and width and is made of an optical member 234 which overlaps the non-display area IA of the liquid crystal display panel 110 and the edge area EA of the effective display area AA And supports the edge portion. That is, since the panel supporting portion 232a is formed to have an area (or width) overlapping the edge area EA of the effective display area AA in order to stably support the liquid crystal display panel 110, Blocking the light traveling toward the edge area EA of the area AA.

The guide sidewall 232b is formed to be perpendicular to the outer surface of the panel support 232a so as to cover the side surface of the bottom cover 140 or each side surface of the bottom cover 140 and the liquid crystal display panel 110. [

The optical member 234 is seated on the panel support portion 232a of the guide panel 232 to support the entire lower surface of the liquid crystal display panel 110. [ That is, the optical member 234 is disposed between the panel supporting portion 232a of the guide panel 232 and the liquid crystal display panel 110. The optical member 234 is transparent and has a flat plate shape so as to have a refractive index so that the light incident from the backlight unit 120 is guided to the effective display area AA including the rim area EA of the liquid crystal display panel 110, Thereby preventing dark portions generated in the edge area EA of the effective display area AA overlapping the panel supporting part 232a of the guide panel 232. [

More specifically, the optical member 234 irradiates the light incident from the backlight unit 120 to the effective display area AA of the liquid crystal display panel 110 and displays the effective display area (superimposed on the panel supporting part 232a) AA is irradiated to the edge area EA. That is, the light emitted from the backlight unit 120 is transmitted through the optical member 234 to be irradiated to the effective display area AA of the liquid crystal display panel 110, and reflected and reflected by the refractive index of the optical member 234 The edge portion EA of the effective display region AA overlapping the panel support portion 232a by being bent is not irradiated to the edge region EA of the effective display region AA.

On the other hand, a reflective member 234a may be formed on each side surface of the optical member 234. In this case, the reflective member 234a reflects the light incident on each side of the optical member 234 to the inside of the optical member 234, thereby preventing light loss and preventing lateral light leakage of the optical member 234 . The reflective member 234a may be a tape or a coating layer made of a light reflective material.

In the liquid crystal display device according to the second embodiment of the present invention, the light emitted from the backlight unit 120 is transmitted to the effective display area AA of the liquid crystal display panel 110 by the optical member 234 made of a transparent material. The entire area of the effective display area AA including the rim area EA of the effective display area AA can be stably supported through the guide panel 232 while being stably supported by the rim area AA of the effective display area AA EA) can be prevented.

Meanwhile, in the above-described liquid crystal display device according to the second embodiment of the present invention, the guide panel 232 is formed of an opaque material, but the present invention is not limited thereto. In this case, the guide panel 232 may be made of a plastic material such as polycarbonate, polymethylmethacrylate, or polysulfone.

Figs. 14 to 18 are diagrams for explaining various modifications of the optical member shown in Figs. 12 and 13, which is a modification of the structure of the optical member so that the amount of light irradiated to the edge region of the effective display region is increased. Hereinafter, only the optical member will be described.

The optical member 234 according to the first modified example includes an uneven pattern 234b formed to overlap the edge area IA of the effective display area AA as shown in Fig.

The concave-convex pattern 234b is regularly or irregularly formed on the upper surface of the optical member 234b which overlaps the edge area IA of the effective display area AA. The concavo-convex pattern 234b condenses the internal reflection and refraction of the optical member 234 and the light incident obliquely from the backlight unit 120 toward the edge area EA of the effective display area AA, The amount of light irradiated to the edge area IA of the display area AA is increased. For this, the concave-convex pattern 234b may be formed in a stripe shape having a pyramid shape, a truncated pyramid shape, or a triangular shape, but is not limited thereto and may be formed in a concavo-convex shape of various structures .

The optical member 234 according to the second modified example includes a light reflecting portion 234c formed to overlap the edge area IA of the effective display area AA as shown in Fig.

The light reflection part 234c is formed on the lower surface of the optical member 234b which overlaps the edge area IA of the effective display area AA. The light reflecting portion 234c reflects the internal reflection and refraction of the optical member 234 and the light incident obliquely from the backlight unit 120 toward the edge area EA of the effective display area AA, The amount of light irradiated to the edge area IA of the effective display area AA is increased.

The light reflecting portion 234c according to one embodiment is formed on the lower surface of the optical member 234b which overlaps the edge area IA of the effective display area AA and is a tape or a coating layer made of a light reflecting material .

16, the light reflecting portion 234c according to another embodiment includes a plurality of reflection patterns 234a formed on the lower surface of the optical member 234b superimposed on the edge area IA of the effective display area AA, . Here, the interval between the plurality of reflection patterns 234c may be set so that the amount of light irradiated to the edge area EA of the effective display area AA increases as it approaches the non-display area IA. For example, the interval between the plurality of reflection patterns 234c is preferably set to be gradually narrower from the inside of the rim area EA toward the non-display area IA.

The optical member 234 according to the third modification includes the photorefractive layer 234d formed so as to overlap the edge area IA of the effective display area AA as shown in Fig.

The light refraction layer 234d is formed on the upper surface of the optical member 234b which overlaps the edge area IA of the effective display area AA and is made of a transparent material having a refractive index different from that of the optical member 234. [ . The light refraction layer 234d refracts the incident light transmitted through the upper surface of the optical member 234b toward the edge area IA of the effective display area AA so that the edge area of the effective display area AA The amount of light to be irradiated to the non-display area IA is increased, and the amount of light irradiated to the outer area of the edge area IA adjacent to the non-display area IA is increased.

17, the optical refraction layer 234d is formed on the upper surface of the optical member 234b. However, the present invention is not limited to this, Or may be formed on the upper surface and the lower surface so as to have different refractive indexes.

The optical member 234 according to the fourth modified example includes the light diffusion member 234e added therein, as shown in Fig.

The light diffusing member 234e is formed in the interior of the optical member 234 by being added to a transparent material which is composed of a plurality of air pores or a plurality of bead particles and forms an optical member 234. The light diffusion member 234e diffuses the light reflected from the backlight unit 120 by diffusing the light reflected from the backlight unit 120 and the internal reflection and refraction of the optical member 234 and thereby irradiates the edge area IA of the effective display area AA Thereby increasing the amount of light.

Each of the plurality of bead particles may be formed of a single material or a heterogeneous material. Further, each of the plurality of bead particles may be configured to include a core portion and a skin portion surrounding the core portion. In this case, the light incident on the bead particle is refracted when the light passes through the skin portion, passes through the core portion, and passes through the skin portion after passing through the core portion. It can be refracted again when passing.

On the other hand, the optical member 234 according to another modified example may be constituted by a combination of the optical members according to the first to fourth modified examples described above. For example, the optical member 234 according to another modified example may include at least two of the concave-convex pattern 234b, the light reflection portion 234c, the light refraction layer 234d, and the light diffusion member 234e Configurations may be selectively combined.

19 is a diagram showing the luminance distribution of the effective display region in the liquid crystal display device according to the embodiment of the present invention.

19, the light emitted from the backlight unit is irradiated to the edge area EA of the effective display area AA through the panel supporting member 130/230, and the whole area of the effective display area AA It can be confirmed that the dark areas generated in the edge area EA of the effective display area AA overlapping the panel supporting member 130/230 are prevented.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents. Will be clear to those who have knowledge of.

110: liquid crystal display panel 112: lower substrate
114: upper substrate 120: backlight unit
130, 230: a panel supporting member 132, 232a:
134, 232b: guide side wall 140: bottom cover
150: front case 232: guide panel
234: Optical member

Claims (13)

A liquid crystal display panel having an effective display area and a non-display area;
A backlight unit for emitting light to the liquid crystal display panel;
A panel support member that supports a non-display area of the liquid crystal display panel and a border area of the effective display area, and is made of a transparent material;
A bottom cover for receiving the backlight unit and supporting the panel support member; And
And a front case enclosing a non-display area of the liquid crystal display panel and a side surface of the panel support member,
Wherein the edge area of the effective display area is irradiated with light transmitted through the panel support member,
Wherein the panel supporting member includes a panel supporting portion for supporting a non-display region of the liquid crystal display panel and a frame region of the effective display region,
And a concavo-convex pattern for converging the incident light toward the edge region is formed in the panel support portion overlapping the edge region of the effective display region. delete delete A liquid crystal display panel having an effective display area and a non-display area;
A backlight unit for emitting light to the liquid crystal display panel;
A panel support member that supports a non-display area of the liquid crystal display panel and a border area of the effective display area, and is made of a transparent material;
A bottom cover for receiving the backlight unit and supporting the panel support member; And
And a front case enclosing a non-display area of the liquid crystal display panel and a side surface of the panel support member,
Wherein the edge area of the effective display area is irradiated with light transmitted through the panel support member,
Wherein the panel supporting member includes a panel supporting portion for supporting a non-display region of the liquid crystal display panel and a frame region of the effective display region,
And a plurality of light refraction layers for refracting incident light toward the edge region are formed in the panel support portion overlapping the edge region of the effective display region. 5. The method of claim 4,
Wherein the plurality of photorefractive layers have refractive indices different from each other along a first direction or a second direction perpendicular to the first direction. The method according to any one of claims 1, 4, and 5,
Wherein the panel support includes a light diffusion member formed of a plurality of air pores or a plurality of bead particles. A liquid crystal display panel having an effective display area and a non-display area;
A backlight unit for emitting light to the liquid crystal display panel;
A panel support member that supports a non-display area of the liquid crystal display panel and a border area of the effective display area, and is made of a transparent material;
A bottom cover for receiving the backlight unit and supporting the panel support member; And
And a front case enclosing a non-display area of the liquid crystal display panel and a side surface of the panel support member,
Wherein the edge area of the effective display area is irradiated with light transmitted through the panel support member,
Wherein the panel supporting member includes a panel supporting portion for supporting a non-display region of the liquid crystal display panel and a frame region of the effective display region,
Wherein the panel support member includes a light diffusion member made of a plurality of air pores or a plurality of bead particles,
Wherein a refraction layer is provided on the panel support portion that overlaps the edge region of the effective display region to refract light diffused by the light diffusion member toward the edge region. A liquid crystal display panel having an effective display area and a non-display area;
A backlight unit for emitting light to the liquid crystal display panel;
A panel supporting member for supporting a non-display area of the liquid crystal display panel and a border area of the effective display area;
A bottom cover for receiving the backlight unit and supporting the panel support member; And
And a front case enclosing a non-display area of the liquid crystal display panel and a side surface of the panel support member,
Wherein the edge area of the effective display area is irradiated with light transmitted through the panel support member,
The panel support member
An optical member that supports the lower surface of the liquid crystal display panel and advances the light incident from the backlight unit to the entire area of the effective display area including the edge area; And
And a guide panel coupled to a side surface of the bottom cover and supporting a bottom edge portion of the optical member overlapping a bottom edge portion of the liquid crystal display panel. 9. The method of claim 8,
And a concavo-convex pattern is formed on the optical member superimposed on the edge area of the effective display area to condense incident light toward the edge area. 9. The method of claim 8,
And a light reflection part for reflecting the incident light toward the edge area is formed on the lower surface of the optical member overlapping the edge area of the effective display area. 9. The method of claim 8,
And a light refraction layer for refracting light incident on at least one side of the upper surface and the lower surface of the optical member overlapping the edge region of the effective display region toward the edge region. The method according to any one of claims 8 to 11,
And a reflective member is formed on each side surface of the optical member. The method according to any one of claims 8 to 11,
Wherein the optical member includes a light diffusion member formed of a plurality of air pores or a plurality of bead particles.

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