KR101891167B1 - Liquid crystal display device - Google Patents

Abstract

The present invention relates to a liquid crystal display, and more particularly, to a liquid crystal display including an edge type backlight unit capable of narrow bezel design and backlight scanning driving.
A feature of the present invention is to form a lenticular lens layer on the upper surface of the light guide plate.
This makes it possible to drive the backlight scanning and drive the backlight scanning even when using a lightweight, thin edge type backlight unit, thereby making the contrast image brighter by making the bright image brighter or darker the image darker There is an effect that can be improved. Therefore, a living image can be realized.
In particular, by forming the lenticular lens layer at a certain distance from the light incidence surface of the light guide plate, it is possible to prevent light incidence caused by the lenticular lens layer at the light incidence portion of the light guide plate, and a narrow bezel design can be realized.

Description

[0001] Liquid crystal display device [0002]

The present invention relates to a liquid crystal display, and more particularly, to a liquid crystal display including an edge type backlight unit capable of narrow bezel design and backlight scanning driving.

A liquid crystal display device (LCD), which is advantageous for moving picture display and has a large contrast ratio and is actively used in TVs and monitors, has optical anisotropy and polarization properties, And the like.

Such a liquid crystal display device has a liquid crystal panel in which a liquid crystal panel is interposed between two adjacent substrates through a liquid crystal layer as an essential component and changes the alignment direction of the liquid crystal molecules in an electric field in the liquid crystal panel to realize a difference in transmittance do.

However, since the liquid crystal panel does not have its own light emitting element, a separate light source is required to display the difference in transmittance as an image. To this end, a backlight having a light source is disposed on the back surface of the liquid crystal panel.

The backlight of the liquid crystal display device is classified into a direct type and an edge type according to the arrangement of light sources. In the edge type, one or a pair of light sources is divided into one side of the light guide plate and two or two pairs The light source has a structure in which the light sources are disposed on both side portions of the light guide plate, and the direct light type structure has a structure in which several light sources are disposed under the liquid crystal panel.

In this case, the direct-type type is mainly used in a liquid crystal display device in which brightness is more important than a thickness of a screen because of its limited thickness, and the edge type that is thinner than the direct type is thicker than a notebook PC or a monitor PC It is mainly used in important liquid crystal display devices.

In recent years, researches on thin type liquid crystal display devices have been actively conducted, and research on edge type backlights has been actively conducted.

However, such an edge-type backlight has a disadvantage that it is difficult to drive the backlight scanning which is recently required.

In recent years, a backlight scanning driving method has been proposed in which a liquid crystal display sequentially drives a plurality of light sources on / off to display a more vivid image and supplies light to specific areas of a liquid crystal panel.

Accordingly, the contrast ratio can be improved by making the bright image brighter or the dark image darker, thereby realizing a more vivid image.

However, as described above, in the liquid crystal display device including the backlight of the edge type as described above, the light source is disposed on one side of the light guide plate, and the light is distributed to the entire surface using the light guide plate to supply the surface light source to the liquid crystal panel, It is very difficult to supply light to specific areas of the panel.

That is, the backlight scanning driving method is difficult for the edge type backlight.

SUMMARY OF THE INVENTION It is a first object of the present invention to provide an edge type backlight capable of driving backlight scanning.

The second object of the present invention is to improve the contrast ratio and reduce the power consumption of the backlight unit.

A third object of the present invention is to prevent bright lines and light gaps from being generated.

In order to achieve the above-mentioned object, the present invention provides a liquid crystal display comprising: a reflection plate; A light guide plate mounted on the reflection plate; A dome-type lenticular lens layer arranged on an upper surface of the light guide plate and spaced a predetermined distance apart from the light incident surface of the light guide plate and having an obtuse angle and a valley repeated in a transverse plane; An LED assembly arranged along the light incident surface of the light guide plate; An optical sheet that is seated on the light guide plate; And a liquid crystal panel mounted on the optical sheet.

The light guide plate may include first and second light incidence surfaces on which light is incident, an upper surface on which light is emitted, a lower surface facing the reflection plate, and opposite side surfaces facing each other, A plurality of lenticular lenses arranged adjacent to each other along a direction transverse to the second light incidence surface from the light surface are protruded from the upper surface, the lenticular lens has first and second side surfaces at both ends of the lenticular lens, And a semicylindrical exit surface formed along the longitudinal direction of the light guide plate by connecting the second side surfaces.

The first and second side surfaces are inclined in directions opposite to each other to form an acute angle with the upper surface, and a lenticular lens layer having a negative shape corresponding to the lenticular lens layer formed on the upper surface is formed on the lower surface.

Further, the thickness of the light guide plate is thicker than the height of the lenticular lens layer, and the optical sheet is a diffusion sheet and a light condensing sheet.

The cover main body includes a support main which covers an edge of the liquid crystal panel, a cover bottom which is in close contact with the support main back surface, and a top cover which surrounds the edge of the liquid crystal panel and is assembled with the support main and cover bottom.

As described above, the backlight scanning drive can be performed by forming the lenticular lens layer on the upper surface of the light guide plate according to the present invention, so that the backlight scanning driving can be performed even though the light type thin edge type backlight unit is used, The contrast ratio can be improved by making the dark image darker or the dark image darker. Therefore, there is an effect that a living image can be realized.

Particularly, by forming the lenticular lens layer at a certain distance from the light incidence surface of the light guide plate, it is possible to prevent light incidence caused by the lenticular lens layer at the light incidence portion of the light guide plate, .

1 is an exploded perspective view of a liquid crystal display device according to an embodiment of the present invention;
2 is a perspective view schematically showing a light guide plate according to an embodiment of the present invention.
3A and 3B are diagrams for explaining backlight scanning driving according to an embodiment of the present invention;
4A is a cross-sectional view schematically showing a modular liquid crystal display device in which a bright line and a light leakage are generated.
FIG. 4B is a cross-sectional view schematically showing a partial cross-section of the modular FIG. 2; FIG.
5A is a perspective view schematically showing a light guide plate according to another embodiment of the present invention.
FIG. 5B is a cross-sectional view taken along the line V-V in FIG. 5A. FIG.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

1 is an exploded perspective view of a liquid crystal display device according to an embodiment of the present invention.

The liquid crystal display device includes a liquid crystal panel 110 and a backlight unit 120 and includes a top cover 140 for modularizing the liquid crystal panel 110 and the backlight unit 120, ), And a cover bottom 150.

Let's take a closer look at each of these.

First, the liquid crystal panel 110 plays a key role in image display of a liquid crystal display device. The liquid crystal panel 110 includes a first substrate 112 and a second substrate 114 which are bonded to each other and a liquid crystal layer (Not shown).

Although not shown in the drawing, a plurality of gate lines and data lines intersect each other on the inner surface of a first substrate 112 called a lower substrate or an array substrate, pixels are defined, and thin- and a thin film transistor (TFT), which are connected in a one-to-one correspondence with the transparent pixel electrodes formed in the respective pixels.

On the inner surface of the second substrate 114 called an upper substrate or a color filter substrate, color filters of red (R), green (G), and blue (B) And a black matrix for covering the gate lines, the data lines, and the thin film transistors.

In addition, color filters of red (R), green (G), and blue (B) colors and transparent common electrodes covering the black matrix are provided.

A polarizing plate (not shown) for selectively transmitting only specific light is attached to the outer surfaces of the first and second substrates 112 and 114, respectively.

A printed circuit board 117 is connected to at least one edge of the liquid crystal panel 110 via a connection member 116 such as a flexible circuit board or a tape carrier package (TCP) The support main body 130 or the cover bottom 150 is properly bent.

When the thin film transistor selected for each gate line is turned on by the on / off signal of the gate driving circuit, the liquid crystal panel 110 transmits the signal voltage of the data driving circuit to the corresponding pixel electrode through the data line. The alignment direction of the liquid crystal molecules in the liquid crystal layer is changed by the electric field between the pixel electrode and the common electrode to show a difference in transmittance.

In addition, a backlight unit 120 for supplying light to the back surface of the liquid crystal panel 110 is provided so that the difference in transmittance of the liquid crystal panel 110 is externally expressed.

The backlight unit 120 includes first and second LED assemblies 129a and 129b, a white or silver reflective plate 125, a light guide plate 200 mounted on the reflective plate 125, And a sheet 121.

The first and second LED assemblies 129a and 129b are positioned on opposite sides to face the first and second light incidence surfaces 201a and 201b of the light guide plate 200 and include a plurality of LEDs 127, And a PCB 128 on which a plurality of LEDs 127 are mounted with a predetermined spacing.

At this time, the plurality of LEDs 127 emit white light toward the light incoming surface of the light guide plate 200, including LED chips (not shown) that emit all the RGB colors or emit white light. The plurality of LEDs 127 emit light having colors of red (R), green (G) and blue (B), respectively. By lighting the plurality of RGB LEDs 127 at a time, white light It can also be implemented.

Particularly, the first and second LED assemblies 129a and 129b are driven independently of the LEDs 127, and can be divided into the LEDs 127 to perform block division driving.

That is, in order to display a more vivid image, the LCD 127 of the present invention is divided into a plurality of LEDs 127 along the longitudinal direction of the PCB 128, and each of the LEDs 127 is divided into a plurality of blocks It is possible to perform block division driving.

Accordingly, the first and second LED assemblies 129a and 129b of the present invention can implement a backlight scanning driving method that sequentially drives the LEDs 127 on and off.

Here, the backlight scanning driving is a driving method in which the block corresponding to the pixel is extinguished while the pixel is responding and the block is lighted after the response is completed. Each block is illuminated only for a predetermined time in each frame, Off.

By performing the backlight scanning drive through the blocks in which the respective LEDs 127 are divided and defined, only the light emitted for each block is supplied to the specific region of the liquid crystal panel 110 through the light guide plate 200, ) Can enhance the contrast ratio by brightening the bright image or making the dark image darker, thereby realizing a vivid image.

In addition, brightness suitable for an image can be adjusted, and an image with dark brightness has light of dark brightness, so that power consumption of the backlight unit 120 can be reduced.

The light guide plate 200 on which the light emitted from the first and second LED assemblies 129a and 129b is incident is formed such that the incident white light travels through the light guide plate 200 by total reflection several times and is incident on a specific area of the liquid crystal panel 110 And spreads evenly over a wide area of the corresponding light guide plate 200 to provide a surface light source to the liquid crystal panel 110.

In this case, when the first and second LED assemblies 129a and 129b are backlight-scanned and driven by the respective LEDs 127, the light incident to the inside of the light guide plate 200 is reflected by the light guide plate 200, The lenticular lens layer 210 is formed on the upper surface of the light guide plate 200 so as not to overlap with each other inside.

That is, the light incident from the first and second LED assemblies 129a and 129b into the light guide plate 200 through the lenticular lens layer 210 is improved in straightness, and the light guide plate 200 is divided into a plurality of areas .

Therefore, only the light emitted by each LED 127 can supply light to a specific region of the liquid crystal panel 110 through the divided region of the light guide plate 200.

Particularly, the lenticular lens layer 210 of the present invention is formed on the upper surface 201c of the light guide plate 200 at a predetermined distance from the first and second light entrance surfaces 201a and 201b of the light guide plate 200 do. Accordingly, it is possible to prevent light leakage and bright lines from being generated in the light-incident portion of the light guide plate 200.

Let me take a closer look at this later.

The reflection plate 125 is disposed on the back surface of the light guide plate 200 and reflects light passing through the back surface of the light guide plate 200 toward the liquid crystal panel 110 to improve the brightness.

The optical sheet 121 on the light guide plate 200 includes a diffusion sheet and at least one light collecting sheet and diffuses or condenses the light passing through the light guide plate 200 to form a more uniform surface light source to the liquid crystal panel 110 Let it enter.

The liquid crystal panel 110 and the backlight unit 120 are modularized through a top cover 140, a support main 130 and a cover bottom 150. The top cover 140 is disposed on the upper surface and the side surface of the liquid crystal panel 110, The top cover 140 is opened so that an image formed on the liquid crystal panel 110 is displayed.

The cover bottom 150 on which the liquid crystal panel 110 and the backlight unit 120 are mounted and the basis of assembling the entire structure of the liquid crystal display device includes a bottom surface which is in close contact with the back surface of the backlight unit 120.

The support main 130 mounted on the cover bottom 150 and having a rectangular frame shape covering the edges of the liquid crystal panel 110 and the backlight unit 120 is coupled with the top cover 140 and the cover bottom 150 .

Here, the top cover 140 may be referred to as a case top or a top case, and the support main 130 may be referred to as a guide panel or a main support or a mold frame, and the cover bottom 150 may be referred to as a bottom cover.

As described above, the liquid crystal display device of the present invention is a liquid crystal display device capable of driving backlight scanning by driving a plurality of LEDs 127 of the first and second LED assemblies 129a and 129b, respectively, Image representation can be implemented.

Also, the power consumption of the backlight unit 120 can be reduced.

Particularly, since the lenticular lens layer 210 provided on the upper surface 201c of the light guide plate 200 is formed at a predetermined distance from the light entrance surfaces 201a and 201b of the light guide plate 200, It is possible to prevent the occurrence of light leakage and bright lines in the light guide plate.

FIG. 2 is a perspective view schematically showing a light guide plate according to an embodiment of the present invention, and FIGS. 3A to 3B are views for explaining backlight scanning driving according to an embodiment of the present invention.

2, the light guide plate 200 is made of a plastic material such as polymethylmethacrylate (PMMA), which is an acrylic transparent resin, which is one of transparent materials capable of transmitting light, or a polycarbonate : PC) series. PMMA is widely used because it has excellent transparency, weatherability and colorability and induces diffusion of light when light is transmitted.

The light guide plate 200 includes a first light incidence surface 201a corresponding to the first LED assembly (129a in FIG. 1) and a second light incidence surface (corresponding to 129b in FIG. 1) A lower surface 201d facing the reflector (125 in FIG. 1) and a lower surface 201d connecting the first and second light incidence surfaces 201a and 201b and emitting light, 201e, 201f.

The upper surface 201c of the light guide plate 200 is arranged adjacent to the first and second light incidence surfaces 201a and 201b of the light guide plate 200 in a transverse direction to form a dome ) Lenticular lenses 211 protrude from the upper surface 201c to form a lenticular lens layer 210. [

The lenticular lens 211 has first and second side surfaces 213a and 213b which are both end surfaces of the lenticular lens 211 and second and third side surfaces 213a and 213b. And a semi-cylindrical exit surface 215 connecting the first and second side surfaces 213a and 213b and extending along the longitudinal direction of the light guide plate 200.

Therefore, the light incident into the light guide plate 200 has high linearity due to the lenticular lens layer 210.

At this time, when the ratio of the thickness d of the light guide plate 200 to the height h of the lenticular lens layer 210 is 1: 0.01, the straightness of light traveling in the light guide plate 200 is the highest.

As described above, since the linearity of the light incident into the light guide plate 200 is improved by the lenticular lens layer 210, the light guide plate 200 can be divided for each lenticular lens 211.

1) of the liquid crystal panel (110 in FIG. 1) through the lenticular lens layer 210 of the light guide plate 200 in the process of dividing the plurality of LEDs 127 of the LED assemblies 129a, Only light can be supplied.

3a to 3b, the plurality of LEDs 127 of the first LED assembly 129a may include first to sixth LED packages 124a, And the LEDs 127 of the second LED assembly 129b are divided into the LED packages 126a, 126b, 126c, 126d, 126d, 124c, 124d, 124e, 126e, and 126f.

The plurality of LED packages 124a, 124b, 124c, 124d, 124e, 124f, 126a, 126b, 126c, 126d, 126e, 126f of the first and second LED assemblies 129a, The lenticular lens 211 of the lenticular lens layer 210 provided on the upper surface 201c is divided into a first lenticular lens 211 of the first and second LED assemblies 129a and 129b 124a and the 2-1 LED package 126a correspond to the first to third lenticular lenses 211 defined as D1 on the drawing of the lenticular lens layer 210. [

Accordingly, the light guide plate 200 corresponds to the LED packages 124a, 124b, 124c, 124d, 124e, 124f, 126a, 126b, 126c, 126d, 126e, 126f of the first and second LED assemblies 129a, D2, D3, D4, D5, and D6, respectively.

At this time, in order to brighten the image implemented in the liquid crystal panel (110 in FIG. 1) corresponding to the first area D1, the third area D3 and the fifth area D5 of the light guide plate 200, The LED packages 124a, 124c and 124e of the LED assemblies 129a and the LED packages 12-1, 12-2 and 12-5 of the second LED assemblies 129b, 1-4, and 1-6 LED packages of the first and second LED assemblies 129a and 129b, respectively, by turning on the LEDs 126a, 126c, and 126e to cause the light to enter the light guide plate 200. At this time, And the LED packages 126b, 126d, and 126f are turned off to prevent light from being incident into the light guide plate 200.

At this time, the light incident on the first area D1, the third area D3 and the fifth area D5 of the light guide plate 200 passes through the lenticular lens layer 210 formed on the upper surface 201c of the light guide plate 200, The directivity of the light guide plate 200 is improved.

That is, the light guide plate 200 is defined by dividing the light incident from the inside of the light guide plate 200 through the lenticular lens layer 210 into the light guide plate 200 so as not to overlap each other.

1) corresponding to the first area D1, the third area D3 and the fifth area D5 of the light guide plate 200 is brightly displayed and the light emitted from the light guide plate 200 1) of the liquid crystal panel 110 corresponding to the second, fourth and sixth regions D2, D4 and D6 of the light guide plate 200 is the first region D1 of the light guide plate 200, (110 in Fig. 1) corresponding to the fifth area D3 and the fifth area D5, the contrast ratio of the image can be improved.

1-4 or 1-6 LED packages 124b, 124d, 124f of the first LED assembly 129a and the second LED assembly 124b, 124d, 124f of the second LED assembly 129b, as shown in FIG. 3B, The second, fourth, and sixth areas D2, D4, and D6 of the light guide plate 200 can be formed by lighting the LED packages 126a, 126b, 126d, and 126f, The first region D1, the third region D3 and the fifth region D5 of the light guide plate 200 are displayed in a bright state. The first region D1, the third region D3, and the fifth region D5 of the light guide plate 200, 1) corresponding to the second region, the fourth region, and the six regions D2, D4, and D6 of the light guide plate 200 are formed on the liquid crystal panel 110 The contrast ratio of the image can be improved.

Accordingly, the liquid crystal display of the present invention can drive the backlight scanning even though the light type thin type edge type backlight unit (120 in FIG. 1) is used, thereby making the bright image brighter or darker the image darker, The contrast ratio can be improved. Therefore, a living image can be realized.

The light guide plate 200 of the present invention is characterized in that the lenticular lens layer 210 is formed at a predetermined distance from the first and second light incidence surfaces 201a and 201b of the light guide plate 200. [

That is, the first and second side surfaces 213a and 213b of each lenticular lens 211 of the lenticular lens layer 210 are not formed to extend from the light entrance surfaces 201a and 201b of the light guide plate 200, And is formed on the upper surface 201c by being spaced from the light incidence surfaces 201a and 201b at regular intervals.

Therefore, the upper surface 201c of the light guide plate 200 on the side of the first and second light entrance surfaces 201a and 201b is partially exposed.

The first and second side surfaces 213a and 213b of the lenticular lens 211 are formed to be inclined in directions opposite to each other so as to form an acute angle with the upper surface 201c of the light guide plate 200. [

Accordingly, the liquid crystal display device of the present invention can prevent a bright line and a light leakage from being generated in correspondence with the light-incident portion of the light guide plate 200.

More specifically, recently, a liquid crystal display device has a large display area and has a remarkably reduced weight and volume. In recent years, a narrow bezel of a peripheral edge, which is a non-light emitting area excluding an effective light emitting area in which an image is displayed, bezel) design.

However, such a narrow bezel design causes a problem of generating a bright line and a light leakage of the liquid crystal display device.

Particularly, the liquid crystal display of the present invention improves the straightness of light by the lenticular lens layer 210 formed on the upper surface 201c of the light guide plate 200, so that light is emitted from the light entrance portion of the light guide plate 200 to the lenticular lens layer 210, The liquid crystal display device of the present invention is configured such that the lenticular lens layer 210 is disposed on the light guide plate 200 in order to reduce the directivity of the light in the light-incident portion of the light guide plate 200, (201a, 201b) of the light source (200).

This will be described in more detail with reference to FIGS. 4A to 4B.

FIG. 4A is a cross-sectional view schematically showing a modular liquid crystal display device in which a bright line and a light gap are generated, and FIG. 4B is a cross-sectional view schematically showing a partially cross-sectional view of FIG.

The light guide plate 200 and the first and second LED assemblies 129a and 129a provided on both sides of the light guide plate 200 and the optical sheet 121 Are stacked to form a backlight unit (120 in FIG. 1).

A liquid crystal panel 110 in which a liquid crystal layer (not shown) is interposed between the first and second substrates 112 and 114 and the first and second substrates 112 and 114 is positioned above the backlight unit 120 On the outer surfaces of the substrates 112 and 114, polarizers 119a and 119b selectively transmitting only specific light are attached.

The backlight unit 120 and the liquid crystal panel 110 are surrounded by the support main body 130 and the cover bottom 150 is coupled to the back side of the backlight unit 120 A top cover 140 is coupled to the support main 130 and the cover bottom 150.

At this time, the liquid crystal display devices of Figs. 4A to 4B are made of a narrow bezel design which is recently required.

On the other hand, a lenticular lens layer 210 in which a plurality of lenticular lenses 211 in the form of repeating mountains and valleys are arranged on the upper surface (201c in Fig. 2) of the light guide plate 200 is formed by projecting light from the light guide plate 200 do.

4A, the lenticular lens 211 of the lenticular lens layer 210 protrudes from the upper surface 201c of the light guide plate 200 directly from the light incidence surface 201a of the light guide plate 200 The light emitted from the LED 127 of the first LED assembly 129a is incident on the light guide plate 200 through the light entrance surface 201a of the light guide plate 200, Scattered and diffused directly against the lenticular lens 211 formed on the surface (201c in Fig. 2).

That is, the lenticular lens 211 causes a phenomenon of light brilliance at the light-incoming portion of the light guide plate 200.

Therefore, in the liquid crystal display device with a narrow bezel design, light leakage and bright lines appear relatively bright in the light-incident portion of the light guide plate 200 as compared with other portions due to the light leakage phenomenon of the light guide plate 200. This causes a problem that the quality of a liquid crystal display device such as brightness and image quality deteriorates.

4B according to an embodiment of the present invention is configured such that a lenticular lens 211 formed on the upper surface 201c of the light guide plate 200 is spaced apart from the light incidence surface 201a of the light guide plate 200 It is possible to prevent light emitted from the LED 127 of the first LED assembly 129a from directly scattering and diffusing against the lenticular lens 211.

As a result, no light leakage occurs in the light-incident portion of the light guide plate 200, and no light leakage and bright line are generated in the light-incident portion of the light guide plate 200.

Accordingly, the lenticular lens layer 210 is formed on the upper surface 201c of the light guide plate 200 (FIG. 2) to improve the straightness of light incident into the light guide plate 200, thereby driving backlight scanning backlight scanning , It is possible to improve the contrast ratio by brightening the bright image or making the dark image darker, thereby realizing a lively image.

Further, even when the narrow bezel design is implemented, it is possible to prevent light leakage and bright lines from being generated in the light-incident portion of the light guide plate 200, thereby preventing a problem that the quality of the liquid crystal display device such as brightness and image quality deteriorates .

On the other hand, in order to supply a uniform surface light source corresponding to a specific area of the liquid crystal panel 110, a pattern of a specific shape may be included on the back surface of the light guide plate 200 (201d in FIG. 2) An elliptical pattern, a polygon pattern, a hologram pattern, and the like may be used to guide the light incident into the light guide plate 200. The light guide plate 200 (201d in Fig. 2) of the printing apparatus or the printing apparatus.

Alternatively, as shown in FIGS. 5A to 5B, a lenticular lens layer 220 of a negative-angled shape may be further formed on the lower surface 201d of the light guide plate 200. FIG.

The lenticular lens layer 220 formed on the lower surface 201d of the light guide plate 200 has a shape corresponding to the lenticular lens 211 formed on the upper surface 201c of the light guide plate 200, Shaped lenticular lens layer 220 is also formed to be spaced apart from the light incidence surfaces 201a and 201b of the light guide plate 200 by a predetermined distance.

By forming the lenticular lens layer 220 having a depressed shape on the lower surface 201d of the light guide plate 200 as described above, the directivity of light incident into the light guide plate 200 can be further improved.

As described above, the liquid crystal display device of the present invention can perform backlight scanning driving by forming the lenticular lens layer 210 on the upper surface 201c of the light guide plate 200, so that the lightweight thin edge type backlight unit 120), the backlight scanning driving can be performed. Accordingly, a bright image is made brighter or a dark image is made darker so that a contrast ratio can be improved. Therefore, a living image can be realized.

Particularly, since the lenticular lens layer 210 is formed at a predetermined distance from the light incidence surfaces 201a and 201b of the light guide plate 200, a light incidence phenomenon is generated by the lenticular lens layer 210 in the light incidence portion of the light guide plate 200 It is possible to realize a narrow bezel design.

The present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

110: liquid crystal panel (112: first substrate, 114: second substrate)
119a and 119b: first and second polarizing plates
(LED), a first LED assembly (LED), and a second LED assembly
130: support main, 140: top cover, 150: cover bottom
200: light guide plate, 201a: incidence surface, 210: lenticular lens layer, 211: lenticular lens

Claims (8)

A reflector;
A light guide plate mounted on the reflection plate;
A dome-shaped lenticular lens layer which is arranged on the upper surface of the light guide plate and has an oblique angle with the first surface and the second light-incoming surface of the light guide plate, ;
An LED assembly arranged along the light incident surface of the light guide plate;
An optical sheet that is seated on the light guide plate;
And a liquid crystal panel
/ RTI >
Wherein the lenticular lens layer has a plurality of lenticular lenses arranged adjacently along a direction crossing the second light incidence surface from the first light incidence surface to protrude from the upper surface,
Wherein the lenticular lens comprises first and second side surfaces of both ends of the lenticular lens and a semi-cylindrical emitting surface provided along the longitudinal direction of the light guide plate by connecting the first and second side surfaces,
Wherein the first and second side surfaces are inclined in directions opposite to each other so as to form an acute angle with the upper surface.
The method according to claim 1,
Wherein the light guide plate includes first and second light incidence surfaces on which light is incident, an upper surface on which light is emitted, a lower surface facing the reflection plate, and opposite side surfaces facing each other.
delete delete 3. The method of claim 2,
And a lenticular lens layer having a concave shape corresponding to the lenticular lens layer formed on the upper surface is formed on the lower surface.
The method according to claim 1,
Wherein the thickness of the light guide plate is thicker than the height of the lenticular lens layer.
The method according to claim 1,
Wherein the optical sheet is a diffusion sheet and a light condensing sheet.
The method according to claim 1,
And a top cover covering the edge of the liquid crystal panel and being assembled to the support main and cover bottoms. The liquid crystal display device of claim 1, wherein the support main and the bottom cover are integrally formed.

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