KR101920697B1 - Polarizer And Liquid Crystal Display Device Including The Same - Google Patents

Abstract

The present invention relates to a liquid crystal display device including a light absorbing layer, wherein the light absorbing layer absorbs light in a wavelength band between red and green. Accordingly, the overlap region between the red and green wavelength ranges of the light emitted from the light emitting diode package can be removed, and pure red and green can be realized, thereby increasing the color reproduction rate of the liquid crystal display device. Such a light absorbing layer can be variously positioned in the upper or lower polarizer of the liquid crystal panel.

Description

[0001] The present invention relates to a polarizing plate and a liquid crystal display device including the polarizing plate.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display, and more particularly, to a polarizing plate having a high color gamut including a light absorbing layer that absorbs light of a specific wavelength and a liquid crystal display including the same.

A liquid crystal display (LCD) device includes a liquid crystal layer formed between two substrates and two substrates, and displays an image by transmitting light by adjusting the arrangement of liquid crystal molecules in the liquid crystal layer.

In general, a liquid crystal display device includes a plurality of pixels arranged in a matrix, and each pixel includes a thin film transistor, a pixel electrode, and a common electrode. By applying voltages to the pixel electrodes and the common electrode of each pixel, an electric field is generated between the pixel electrode and the common electrode, and the liquid crystal molecules of the liquid crystal layer are rearranged by the generated electric field, thereby changing the transmittance of the liquid crystal layer. Therefore, by controlling the voltages applied to the pixel electrodes and the common electrode of the liquid crystal display device, the transmittance of the liquid crystal layer of each pixel can be adjusted so as to have a value corresponding to the video signal, and as a result, the liquid crystal display device displays an image.

Since the liquid crystal display device is not a self-luminous device, it needs to supply light separately. Therefore, the liquid crystal display device includes a liquid crystal panel for displaying an image and a backlight unit for supplying light to the liquid crystal panel.

BACKGROUND ART A backlight unit includes a light source, and a fluorescent lamp such as a cold cathode fluorescent lamp (CCFL) or an external electrode fluorescent lamp (EEFL) has been used as a light source of a backlight unit .

The backlight unit can be divided into a direct type and an edge type depending on the path of the light emitted from the lamp. The direct-type backlight unit is a method of directly supplying light emitted from the lamp to the liquid crystal panel by disposing a plurality of lamps under the liquid crystal panel. In the side-type backlight unit, a light guide plate is disposed under the liquid crystal panel, and a lamp is disposed on at least one side of the light guide plate, so that light emitted from the lamp is indirectly supplied to the liquid crystal panel using refraction and reflection of light in the light guide plate.

BACKGROUND ART In recent years, a side-type backlight unit has been widely used in accordance with the trend toward thinness and weight of a liquid crystal display device, and a light emitting diode (LED) lamp having an advantage in terms of power consumption, weight, It is replacing.

1 is a cross-sectional view schematically showing a liquid crystal display device including a conventional side-type backlight unit.

1, a conventional liquid crystal display device includes a liquid crystal panel 10, a backlight unit 20, a main frame 30, a top frame 40, and a bottom frame 50.

The liquid crystal panel 10 includes a lower substrate 12 and an upper substrate 14 and a liquid crystal layer (not shown) is disposed between the two substrates 12 and 14. A lower polarizer 18 is disposed under the lower substrate 12 and an upper polarizer 19 is disposed on the upper substrate 14.

A driving unit (not shown) including a driver integrated circuit (driver IC) is connected to one side of the liquid crystal panel 10 to transmit a signal to a plurality of pixels (not shown) in the liquid crystal panel 10 Supply.

A backlight unit 20 is disposed under the liquid crystal panel 10. The backlight unit 20 includes a reflective sheet 22 and a light guide plate 24 and an optical sheet 26 sequentially arranged from the bottom. On the other hand, a light emitting diode (LED) assembly 28 is disposed as a light source on one side of the light guide plate 24. The LED assembly 28 includes an LED printed circuit board 28a and an LED package 28b.

The main frame 30 surrounds the side surfaces of the liquid crystal panel 10 and the backlight unit 20 and the top frame 40 on the front surface of the liquid crystal panel 10 and the bottom frame 50 on the back surface of the backlight unit 20 Thereby forming a module.

However, such a conventional liquid crystal display device has a relatively low color gamut and can not display many colors, so it is difficult to display a high-quality image.

FIG. 2 is a diagram showing the color reproduction ratio of a conventional liquid crystal display device on a CIE 1976 chromaticity distribution diagram, together with a digital cinema initiative (DCI) color standard.

In general, in order to realize a high color reproduction rate, the color reproduction ratio of the display device should have an overlap ratio of 95% or more with respect to the DCI color specification (DCI). However, as shown in Fig. 2, the color reproduction ratio (NCG) of the conventional liquid crystal display device has an area smaller than the DCI color standard (DCI) and the overlap ratio is about 81.0%. Therefore, it is difficult for conventional liquid crystal display devices to realize a high color reproduction rate.

Disclosure of Invention Technical Problem [8] The present invention has been made in order to solve the above problems, and it is an object of the present invention to solve the problem of a low color gamut of a liquid crystal display device.

In order to achieve the above object, a liquid crystal display device according to the present invention includes a liquid crystal panel including first and second substrates, first and second polarizing plates respectively disposed on the outer surfaces of the first and second substrates, And a backlight unit disposed under the liquid crystal panel and including a light emitting diode package, wherein the light emitting diode package includes a blue light emitting diode chip and yellow and red phosphors, and the first polarizer absorbs light in a wavelength band between red and green And a light absorbing layer. The first polarizing plate may be a lower polarizing plate positioned between the first substrate and the backlight unit, or the first polarizing plate may be an upper polarizing plate, and the first substrate may be positioned between the first polarizing plate and the backlight unit.

In this case, the light emitting diode package has a relatively low intensity of blue light emitted by adjusting the total content and mixing ratio of the yellow and red phosphors, relatively high intensity of yellow and red light, and light emitted from the light emitting diode package By eliminating overlapping areas between the red and green wavelength bands, pure red and green are realized.

The light absorbing layer of the present invention may be positioned between the polarizing film of the first polarizing plate and the backlight unit, and may further include beads.

Alternatively, the light absorbing layer may be positioned between the polarizing film and the first substrate, and may further include an adhesive.

In the present invention, the total content and blending ratio of the yellow and red phosphors of a light emitting diode package including a blue light emitting diode chip are controlled, and a light absorbing layer for absorbing light in a wavelength band between red and green is applied to the upper or lower polarizer of the liquid crystal panel , It is possible to realize a liquid crystal display device having a high color reproducibility in a simple manner while minimizing the change of parts.

Since such a light absorbing layer can be manufactured at a relatively low cost, an increase in the manufacturing cost of the liquid crystal display device can be minimized, thereby enhancing the price competitiveness.

Further, the light absorbing layer can be applied in various positions in the upper or lower polarizing plate of the liquid crystal panel, and can be provided with additional functions including beads or an adhesive, thereby enhancing the degree of freedom of design.

On the other hand, when the light absorbing layer is applied to the upper polarizer of the liquid crystal panel, the reflection of external light can be lowered, and the front contrast ratio and the viewing angle characteristics can be improved.

1 is a cross-sectional view schematically showing a liquid crystal display device including a conventional side-type backlight unit.
2 is a diagram showing a color reproduction ratio of a conventional liquid crystal display device on a CIE 1976 chromaticity distribution diagram.
3 is an exploded perspective view schematically showing a liquid crystal display device according to an embodiment of the present invention.
4 is a cross-sectional view schematically showing a liquid crystal display device according to an embodiment of the present invention.
FIG. 5A is a perspective view schematically showing the structure of an LED package according to an embodiment of the present invention, and FIG. 5B is a sectional view schematically showing the structure of an LED package according to an embodiment of the present invention.
FIG. 6A is a view showing an emission spectrum of an LED package of a liquid crystal display according to an embodiment of the present invention, FIG. 6B is a diagram showing an absorption spectrum of a light absorption layer of a liquid crystal display device according to an embodiment of the present invention, FIG. 6C is a view showing a spectrum of light passing through the LED package and the light absorption layer of the liquid crystal display according to the embodiment of the present invention. FIG.
7 is a diagram showing a color reproduction ratio of a liquid crystal display according to an embodiment of the present invention on a CIE 1976 chromaticity distribution diagram.
8 is a cross-sectional view schematically showing a first polarizer including a light absorbing layer according to a first embodiment of the present invention.
9 is a cross-sectional view schematically showing a first polarizer including a light absorbing layer according to a second embodiment of the present invention.
10 is a cross-sectional view schematically showing a third polarizer including a light absorbing layer according to a third embodiment of the present invention.
11 is a cross-sectional view schematically showing a second polarizing plate including a light absorbing layer according to a fourth embodiment of the present invention.
12 is a cross-sectional view schematically showing a second polarizing plate including a light absorbing layer according to a fifth embodiment of the present invention.

A liquid crystal display device of the present invention comprises a liquid crystal panel including first and second substrates, first and second polarizing plates respectively disposed on the outer surfaces of the first and second substrates, Wherein the light source includes a first light emitter having a first peak wavelength, a second light emitter having a second peak wavelength larger than the first peak wavelength, and a third light emitter having a third peak wavelength larger than the second peak wavelength, Wherein the first polarizer includes a light absorbing layer having an absorption peak between the second peak wavelength and the third peak wavelength.

The first light emitting body includes a light emitting diode chip, the second light emitting body includes a first phosphor, and the third light emitting body includes a second phosphor.

The weight ratio between the first phosphor and the second phosphor is 55% and 45%, respectively.

The light source further comprises a resin layer, wherein the first phosphor and the second phosphor are located in a resin layer, and the total content of the first phosphor and the second phosphor is 5.8 wt% of the resin layer content.

The light emitting diode chip is a blue light emitting diode chip, the first phosphor is a yellow phosphor, and the second phosphor is a red phosphor.

The first polarizing plate may further include a polarizing film, and the light absorbing layer may be positioned between the first substrate and the polarizing film.

The light absorbing layer may further include an adhesive.

The first polarizing plate may further include a polarizing film, and the polarizing film may be positioned between the light absorbing layer and the first substrate.

Wherein the first polarizing plate is positioned between the first substrate and the backlight unit and the first polarizing plate further comprises first and second base films positioned between the polarizing film and the backlight unit, And may be positioned between the first and second base films.

The first polarizer is positioned between the first substrate and the backlight unit, and the light absorbing layer may further include a bead.

On the other hand, the polarizing plate of the present invention includes a polarizing film and a light absorbing layer which is located on one side of the polarizing film and absorbs light in a wavelength band between red and green.

The light absorbing layer comprises a metal coordination-tetraazaporphyrin compound of the following formula.

The

Wherein M is Ni, Mg, Mn, CO, Cu, Ru, or V, or Mn or Ru coordinated with at least one ligand selected from ammonia, water and halogen atoms, and each of R1, R2, R3, A C1-C10 alkyl group or a C6-C30 aromatic group, and each of a, b, c and d is 1 or 2.

The light absorption layer further comprises a binder, and the content of the metal coordination-tetraazaporphyrin compound is 0.6 to 1.2 wt% based on the binder.

The light absorbing layer of the polarizing plate of the present invention may include beads. Alternatively, the light absorbing layer of the polarizing plate of the present invention may further comprise an adhesive.

Alternatively, the polarizing plate may further include first and second base films on one side of the polarizing film, and the light absorbing layer may be positioned between the first and second base films.

The light absorbing layer may be in contact with the polarizing film.

The polarizing plate of the present invention may further include a surface treatment layer, and the light absorbing layer may be positioned between the surface treatment layer and the polarizing film.

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

FIG. 3 is an exploded perspective view schematically showing a liquid crystal display device according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view schematically illustrating a liquid crystal display device according to an embodiment of the present invention.

3 and 4, a liquid crystal display device according to an embodiment of the present invention includes a liquid crystal panel 110, a backlight unit 120, a main frame 130, a top frame 140, Frame 150 as shown in FIG.

The liquid crystal panel 110 displays an image and includes a first substrate 112 on the lower side, a second substrate 114 on the upper side, a liquid crystal layer (not shown) positioned between the two substrates 112 and 114, And first and second polarizers 118 and 119 located outside the first substrate 112 and the second substrate 114, respectively.

Although not shown, the first substrate 112 includes a plurality of gate wirings and data wirings on the inner surface, and the gate wirings and the data wirings intersect to define a plurality of pixel regions. A thin film transistor connected to the gate wiring and the data wiring and a pixel electrode connected to the thin film transistor are disposed in each pixel region. This first substrate 112 is referred to as a lower substrate or an array substrate.

Although not shown, the second substrate 114 includes a black matrix and a color filter layer on the inner surface thereof. The black matrix has openings corresponding to the pixel regions, and the red, green, and blue color filter patterns of the color filter layer are sequentially positioned corresponding to the openings of the black matrix. This second substrate 114 is referred to as an upper substrate or a color filter substrate.

On the other hand, a common electrode is formed on the first substrate 112 or the second substrate 114 to form a liquid crystal capacitor together with the pixel electrode and the liquid crystal layer. For example, the common electrode may be formed in the pixel region of the first substrate 114 together with the pixel electrode. In this case, the common electrode and the pixel electrode may be alternately arranged in a pattern of a rod shape or the like.

The first and second polarizers 118 and 119 are attached to the outer surfaces of the first substrate 112 and the second substrate 114 to selectively transmit only specific light. The first polarizing plate 118 and the second polarizing plate 118 transmit only linearly polarized light parallel to the respective light transmission axes and the light transmission axis of the first polarizing plate 118 and the light transmission axis of the second polarizing plate 119 are perpendicular to each other .

Here, the first polarizing plate 118 or the second polarizing plate 119 according to the embodiment of the present invention includes a light absorbing layer that absorbs light in a wavelength band between red and green, which will be described in detail later.

A driver integrated circuit (driver IC) 116 is attached to at least one edge of the liquid crystal panel 110 via a connection member such as a tape carrier package (TCP), and the driving integrated circuit 116 Is connected to a printed circuit board (PCB) 117. The printed circuit board 117 is folded in the modularization process and placed on the side of the main frame 130 or the back side of the bottom frame 150.

A backlight unit 120 is disposed below the liquid crystal panel 110 and a backlight unit 120 supplies light to the liquid crystal panel 110. The backlight unit 120 includes a reflective sheet 122, a light guide plate 124, an optical sheet 126, and a light emitting diode (LED) assembly 128.

The LED assembly 128 is a light source of the backlight unit 120. The LED assembly 128 includes an LED printed circuit board 128a and a plurality of LED packages 128b. The LED package 128b is mounted on one side of the LED printed circuit board 128a and is spaced apart along the length direction of the LED printed circuit board 128a. Here, the structure in which the LED packages 128b are arranged in one line is shown, but the LED packages 128b may be arranged in two or more lines.

The LED package 128b according to an embodiment of the present invention emits white light including a blue (B) LED chip, a yellow (Y) phosphor, and a red (R) phosphor, which will be described in detail later.

The LED assembly 128 is disposed on one side of the light guide plate 124, and may correspond to the short side of the light guide plate 124. The light guide plate 124 reflects and refracts light that is emitted from each of the plurality of LED packages 128b through one side of the light guide plate 124 and transmits the light to the front surface of the LED package 128b, As a surface light source. Here, one side of the light guide plate 124 on which light is incident is referred to as a light incidence surface.

The light guide plate 124 may include a pattern of a specific shape on a back surface thereof to supply a uniform surface light source. For example, the light guide plate 124 may include an elliptical pattern, a polygon pattern, a hologram pattern, and the like in order to guide light incident into the light guide plate 124 , And this pattern may be formed on the lower surface of the light guide plate 124 by a printing method or an injection method.

The reflective sheet 122 is disposed on the back surface of the light guide plate 124 and reflects light passing through the back surface of the light guide plate 124 toward the liquid crystal panel 110 to improve the brightness of light.

An optical sheet 126 is positioned above the light guide plate 124. The optical sheet 126 includes a diffusion sheet and at least one light collecting sheet and diffuses or condenses light passing through the light guide plate 124 to allow a more uniform surface light source to be incident on the liquid crystal panel 110. The optical sheet 126 may include first to third optical sheets 126a, 126b, and 126c sequentially disposed on the light guide plate 124. [

In one example, each of the first and second optical sheets 126a and 126b may be a light collecting sheet, and the third optical sheet 126c may be a diffusing sheet. The light condensing sheet may include a prism pattern or a lenticular pattern, the first optical sheet 126a including a lenticular pattern and the second optical sheet 126b including a prism pattern.

On the other hand, the third optical sheet 126c may be a brightness enhancement film. The brightness enhancement film may have a structure in which layers having different refractive indices are alternately laminated.

The liquid crystal panel 110 and the backlight unit 120 are modularized through the main frame 130, the top frame 140, and the bottom frame 150.

The main frame 130 has a square shape and includes a vertical portion and a horizontal portion. A liquid crystal panel 110 is disposed on a horizontal portion of the main frame 130 and a backlight unit 120 is disposed on a lower portion of the main frame 130. A vertical portion of the main frame 130 surrounds a side surface of the liquid crystal panel 110.

The bottom frame 150 includes a horizontal surface on which the backlight unit 120 is mounted and a side surface perpendicular thereto. On the side of the bottom frame 150, the LED assembly 128 is positioned.

The top frame 140 has a rectangular frame shape and has a cross-sectional shape such that it covers the front edge and the side surface of the liquid crystal panel 110. The top frame 140 includes an opening at the center of the front surface so that an image displayed on the liquid crystal panel 110 is displayed on the outside through the opening.

The top frame 140, the main frame 130, and the bottom frame 150 are assembled and fastened to each other, so that the liquid crystal display of the present invention is modularized. At this time, the top frame 140 may be omitted.

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

As described above, the liquid crystal display according to the embodiment of the present invention includes an LED package 128b including a blue (B) LED chip and a yellow (Y) phosphor and a red (R) The package 128b will be described in more detail below.

FIG. 5A is a perspective view schematically showing the structure of an LED package according to an embodiment of the present invention, and FIG. 5B is a sectional view schematically showing the structure of an LED package according to an embodiment of the present invention.

5A and 5B, the LED package 128b according to the embodiment of the present invention includes an LED chip 210, a resin layer 220 including a phosphor, and a mold frame 230. As shown in FIG.

The LED chip 210 may include first and second chips 210a and 210b, each emitting blue light. Each of the first and second chips 210a and 210b is electrically connected to the LED printed circuit board (128a in FIG. 3) through wire bonding. Here, the case where the first and second chips 210a and 210b are used is described, but the number of chips is not limited thereto.

The mold frame 230 has a cavity therein, and the first and second chips 210a and 210b are located in the cavity. More specifically, the first and second chips 210a and 210b are spaced apart from each other on the bottom surface of the mold frame 230 corresponding to the cavity, and the side surface of the mold frame 230 corresponding to the cavity is formed as an oblique reflection surface (230a) so that light from the first and second chips (210a, 210b) is sent upward. Here, the cavity may further include a concave portion corresponding to each of the first and second chips 210a and 210b.

Although not shown, such a mold frame 230 may include a separate lower frame and an upper frame, and a lead frame may be positioned between the lower frame and the upper frame. The lead frame is connected to the first and second chips 210a and 210b to apply a voltage so that electrons and holes are recombined in each of the first and second chips 210a and 210b.

A resin layer 220 including a phosphor is formed in the cavity to cover the first and second chips 210a and 210b. For example, the phosphor may be dispersed in a silicone resin. Further, the phosphor may include a yellow (Y) phosphor and a red (R) phosphor.

Each of the first and second chips 210a and 210b has a peak wavelength of about 444 nanometers and a yellow phosphor has a peak wavelength of about 540 nanometers. The phosphor has a peak wavelength region of about 650 nanometers.

The LED package 128b according to the embodiment of the present invention relatively lowers the intensity of the blue light and relatively increases the intensity of the yellow and red light as compared with a typical LED package. For this, the total content of the yellow (Y) and red (R) phosphors is preferably about 5.8 wt% of the resin layer (220) content. At this time, the weight mixing ratios of the yellow (Y) phosphor and the red (R) phosphor are preferably 55% and 45%, respectively.

However, in the LED package 128b, an overlapping region exists between the red light and the green light, so that the color reproduction ratio of the liquid crystal display device is lowered. Therefore, in the liquid crystal display device according to the embodiment of the present invention including the LED package 128b, the first polarizer (118 in FIG. 4) or the liquid crystal panel (110 in FIG. 4) under the liquid crystal panel (119 in Fig. 4) including the light absorbing layer absorbs the light in the wavelength band between red and green, the color reproduction ratio of the liquid crystal display device can be increased.

At this time, the light absorbing layer may include a light absorbing agent having an absorption peak in the 590 nm wavelength region. For example, the light absorber comprises a metal coordination-tetra-azaporphyrin compound of formula 1:

Formula 1

Wherein M is Ni, Mg, Mn, CO, Cu, Ru, or V, or Mn or Ru coordinated with at least one ligand selected from ammonia, water and halogen atoms. Each of R1, R2, R3 and R4 may be independently selected from C1-C10 alkyl groups or C6-C30 aromatic groups, and each of a, b, c, 1 or 2. < / RTI > For example, the alkyl group may be a methyl, ethyl, propyl, or butyl group, and the aromatic group may be a phenyl group.

FIG. 6A is a view showing an emission spectrum of an LED package of a liquid crystal display according to an embodiment of the present invention, FIG. 6B is a diagram showing an absorption spectrum of a light absorption layer of a liquid crystal display device according to an embodiment of the present invention, FIG. 6C is a view showing a spectrum of light passing through the LED package and the light absorption layer of the liquid crystal display according to the embodiment of the present invention. FIG.

As shown in FIG. 6A, light emitted from an LED package of a liquid crystal display according to an embodiment of the present invention has a peak wavelength of blue, and an overlapped region exists in a wavelength band between red and green.

On the other hand, as shown in FIG. 6B, the light absorption layer of the liquid crystal display device according to the embodiment of the present invention has a strong absorption peak in the wavelength band between red and green.

Therefore, when the liquid crystal display device according to the embodiment of the present invention includes a light absorbing layer and light emitted from the LED package passes through the light absorbing layer, as shown in FIG. 6C, the overlapped region of the red- And can implement pure red and green.

The color reproduction ratio of the liquid crystal display device including the LED package and the light absorbing layer is shown in Fig. FIG. 7 is a diagram showing a color reproduction ratio of a liquid crystal display device according to an embodiment of the present invention on a CIE 1976 chromaticity distribution diagram, and shows a digital cinema initiative (DCI) color standard.

The CIE 1976 chromaticity distribution diagram is a chromaticity coordinate system proposed to improve the uniformity of the color space of the color space and the color space interval on the coordinate system, which is a disadvantage of the XYZ chromaticity coordinates, and shows the human color perception with u 'and v'. Similar distances on this CIE 1976 chromaticity distribution map represent a similar perceived color difference

7, the color reproduction ratio (LAS) of the liquid crystal display device including the LED package and the light absorbing layer according to the embodiment of the present invention achieves a high color reproduction rate with an overlap ratio of DCI color specification (DCI) of 95% .

As described above, the liquid crystal display according to the embodiment of the present invention controls the total content and blending ratio of the yellow (Y) and red (R) phosphors of the LED package including the blue (B) LED chip, It is possible to realize a high color reproduction at a relatively low cost by using a light absorbing layer for absorbing the light of the band.

On the other hand, the white color condition of the liquid crystal display device used for the TV is required to have a color coordinate of CIE 1931 (Wx, Wy) = (0.278, 0.288) and a color temperature of 10,000 K. By using the LED package and the light absorbing layer according to the present invention White conditions according to DCI color standard can be satisfied within ± 0.015 tolerance.

In addition, the relative light efficiency of light passing through the light absorbing layer with respect to the light emitted from the LED package is about 70% or more, which is relatively low in luminance, thereby preventing an increase in power consumption. At this time, when the optical sheet including the brightness enhancement film is disposed below the first polarizing plate including the light absorbing layer, the relative optical efficiency is about 80% or more, and higher optical efficiency can be obtained.

Hereinafter, a polarizing plate including a light absorbing layer according to various embodiments of the present invention will be described in detail with reference to the drawings.

- First Embodiment -

8 is a cross-sectional view schematically showing a first polarizer including a light absorbing layer according to a first embodiment of the present invention.

8, the first polarizing plate 118 according to the first embodiment of the present invention includes a polarizing film 310, first and second supporting films 322 and 324, an adhesive layer 330, and And a light absorbing layer 340.

The polarizing film 310 is disposed between the first and second supporting films 322 and 324 and the adhesive layer 330 is disposed on the outer surface of the first supporting film 322 and the outer surface of the second supporting film 324 A light absorption layer 340 is disposed.

The polarizing film 310 may be formed of polyvinyl alcohol (PVA). The polarizing film 310 may be formed by drawing an iodine ion or a dichroic dye onto a PVA film and then drawing the film. The polarizing film 310 has an absorption axis in the stretching direction, absorbs light oscillating in a direction parallel to the absorption axis, and transmits light oscillating in a direction perpendicular to the absorption axis. The polarizing film 310 may have a thickness of about 25 micrometers.

Each of the first and second support films 322 and 324 may be formed of one selected from the group consisting of triacetyl cellulose (TAC), cyclic olefin polymer (COP), polyethylene terephthalate (PET) ). The first support film 322 corresponds to the inner support film adjacent to the first substrate 112 of Fig. 4, and the second support film 324 corresponds to the outer support film adjacent to the optical sheet , The thickness of the first support film 322 may be smaller than the thickness of the second support film 324. In one example, the thickness of the first support film 322 may be about 40 micrometers, and the thickness of the second support film 324 may be about 60 micrometers. However, the thickness of the first and second supporting films 322 and 324 may be the same, but is not limited thereto. Here, the first support film 322 may have a retardation value in the thickness direction and the in-plane direction for the viewing angle compensation. At this time, the retardation value in the thickness direction and the in-plane direction may be in the range of -250 nm to +250 mm. Alternatively, the first support film 322 may not have a retardation value in the thickness direction and the in-plane direction, thereby reducing the cost.

The adhesive layer 330 on the outer surface of the first support film 322 may include a pressure sensitive adhesive PSA and the first polarizer plate 118 may be bonded to the first substrate 4 112).

Although the first polarizing plate 118 includes the adhesive layer 330 in the present invention, the adhesive layer 330 may be formed on the first substrate 112 (see FIG. 4).

The light absorbing layer 340 on the outer surface of the second support film 324 includes a binder and a light absorbing agent 340a distributed in the binder. The binder may be made of acrylic, and the light absorber 340a includes a material that absorbs light in the wavelength band between red and green. Such a light absorber 340a may comprise a metal coordination-tetraazaporphyrin compound of formula (I).

At this time, based on the acrylic binder, the metal coordination-tetraazaporphyrin compound may be contained in an amount of 0.6 to 1.2 wt%.

When the content of the metal coordination-tetraazaporphyrin compound is greater than 1.2 wt%, the intensity of the absorption spectrum in the 590 nm wavelength region increases and the light absorption rate to the 590 nm wavelength region increases. As a result, the color reproduction rate is improved but the luminance is lowered.

On the other hand, when the content of the metal coordination-tetraazaporphyrin compound is less than 0.6 wt%, the intensity of the absorption spectrum in the 590 nm wavelength region decreases and the light absorption rate to the 590 nm wavelength region decreases. Thus, the luminance is increased but the color reproduction rate is lowered.

Here, preferably, the metal coordination-tetraazaporphyrin compound may be contained in an amount of 0.8 to 1.1 wt%, more preferably about 1.0 wt%, based on the acrylic binder.

Meanwhile, the light absorption layer 340 may further include beads 340b therein. The beads 340b may be made of poly (methyl methacrylate) (PMMA). The beads 340b have a function of diffusing light and form irregularities on the surface of the light absorbing layer 340 to prevent wet-out phenomenon between the films and to prevent scratches on the surface of the film have.

In the present invention, the light absorption layer 340 includes the beads 340b, but the beads 340b may be omitted.

The light absorption layer 340 may be formed through a coating method or the like, and the light absorption layer 340 may have a thickness of about 3 to 10 micrometers.

As described above, the first polarizing plate 118 according to the first embodiment of the present invention includes the light absorbing layer 340 on one side thereof to remove the overlapped region of the red and green wavelength bands among the light from the LED package, The color reproduction rate of the device can be increased.

- Second Embodiment -

9 is a cross-sectional view schematically showing a first polarizer including a light absorbing layer according to a second embodiment of the present invention.

9, the first polarizing plate 118 according to the second embodiment of the present invention includes a polarizing film 410, first and second supporting films 422 and 424, an adhesive layer 430, and And a light absorbing sheet 440.

The polarizing film 410 is positioned between the first and second supporting films 422 and 424 and the adhesive layer 430 is disposed on the outer surface of the first supporting film 422 and the adhesive layer 430 is disposed on the outer surface of the second supporting film 424. [ A light absorbing sheet 440 is disposed.

The polarizing film 410 may be formed of polyvinyl alcohol (PVA). The polarizing film 410 may be formed by drawing an iodine ion or a dichroic dye onto a PVA film and stretching the same. The polarizing film 410 has an absorption axis in the stretching direction, absorbs light oscillating in a direction parallel to the absorption axis, and transmits light oscillating in a direction perpendicular to the absorption axis. The polarizing film 410 may have a thickness of about 25 micrometers.

Each of the first and second support films 422 and 424 may be formed of triacetyl cellulose (TAC), a cyclic olefin polymer (COP), polyethylene terephthalate (PET) ). The first support film 422 corresponds to the inner support film adjacent to the first substrate 112 of FIG. 4, and the second support film 424 corresponds to the outer support film adjacent to the optical sheet (126 of FIG. 4) , The thickness of the first supporting film 422 may be smaller than the thickness of the second supporting film 424. In one example, the thickness of the first support film 422 may be about 40 micrometers, and the thickness of the second support film 424 may be about 60 micrometers. However, the thicknesses of the first and second support films 422 and 424 may be the same, but are not limited thereto. Here, the first support film 422 may have phase retardation values in the thickness direction and the in-plane direction for the viewing angle compensation. At this time, the retardation value in the thickness direction and the in-plane direction may be in the range of -250 nm to +250 mm. Alternatively, the first support film 422 may not have a phase retardation value in the thickness direction and the in-plane direction, and the cost of the first support film 422 may be reduced because the cost is low.

The adhesive layer 430 on the outer surface of the first support film 422 may include a pressure sensitive adhesive PSA and the first polarizer plate 118 may be bonded to the first substrate 4 112).

Although the first polarizing plate 118 includes the adhesive layer 430 in the present invention, the adhesive layer 430 may be formed on the first substrate 112 (see FIG. 4).

The light absorbing sheet 440 on the outer surface of the second support film 424 includes the light absorbing layer 442 and the first and second base films 444 and 446.

The first and second base films 444 and 446 may be made of polyethylene terephthalate or polycarbonate. Each of the first and second base films 444 and 446 may have a thickness of about 100 micrometers.

A light absorbing layer 442 is disposed between the first and second base films 444 and 446. As a result, wrinkles can be prevented from being generated in the light absorbing sheet 440, and image quality deterioration of the liquid crystal display device can be prevented.

Here, the light absorbing layer 442 may have a thickness of about 3 to 20 micrometers.

The light absorbing layer 442 includes a binder and a light absorbing agent 440a distributed in the binder. The binder may be made of acrylic, and the light absorbing material 440a includes a material that absorbs light in the wavelength band between red and green. Such a light absorber 440a may include a metal coordination-tetraazaporphyrin compound of formula (I).

At this time, based on the acrylic binder, the metal coordination-tetraazaporphyrin compound may be contained in an amount of 0.6 to 1.2 wt%.

When the content of the metal coordination-tetraazaporphyrin compound is greater than 1.2 wt%, the intensity of the absorption spectrum in the 590 nm wavelength region increases and the light absorption rate to the 590 nm wavelength region increases. As a result, the color reproduction rate is improved but the luminance is lowered.

On the other hand, when the content of the metal coordination-tetraazaporphyrin compound is less than 0.6 wt%, the intensity of the absorption spectrum in the 590 nm wavelength region decreases and the light absorption rate to the 590 nm wavelength region decreases. Thus, the luminance is increased but the color reproduction rate is lowered.

Here, preferably, the metal coordination-tetraazaporphyrin compound may be contained in an amount of 0.8 to 1.1 wt%, more preferably about 1.0 wt%, based on the acrylic binder.

On the other hand, the second base film 446 may be omitted, and the light absorbing layer 442 may be directly attached to the second support film 424. [ In this case, the light absorbing layer 442 may have adhesiveness.

The light absorbing sheet 440 may be formed by a lamination method or a coating method.

As described above, the first polarizing plate 118 according to the second embodiment of the present invention includes the light absorbing layer 442 on one side thereof to remove the overlapped region of the green and red inter-wavelength band among the light from the LED package, The color reproduction rate of the device can be increased.

At this time, the light absorbing layer 442 can be positioned between the first and second base films 444 and 446 to prevent the light absorbing sheet 440 from being wrinkled, thereby preventing deterioration in the image quality of the liquid crystal display device .

- Third Embodiment -

10 is a cross-sectional view schematically showing a first polarizer including a light absorbing layer according to a third embodiment of the present invention.

10, the first polarizing plate 118 according to the third embodiment of the present invention includes a polarizing film 510, first and second supporting films 522 and 524, and a light absorbing layer 540 .

The polarizing film 510 is positioned between the first and second support films 522 and 524 and the light absorbing layer 540 is disposed on the outer surface of the first support film 522.

The polarizing film 510 may be formed of polyvinyl alcohol (PVA). The polarizing film 510 may be formed by drawing an iodine ion or a dichroic dye onto a PVA film and then drawing the film. The polarizing film 510 has an absorption axis in the stretching direction, absorbs light oscillating in a direction parallel to the absorption axis, and transmits light oscillating in a direction perpendicular to the absorption axis. The polarizing film 510 may have a thickness of about 25 micrometers.

Each of the first and second support films 522 and 524 may be formed of triacetyl cellulose (TAC), a cyclic olefin polymer (COP), polyethylene terephthalate (PET), or acryl ). The first support film 522 corresponds to the inner support film adjacent to the first substrate (112 in Fig. 4), and the second support film 524 corresponds to the outer support film adjacent to the optical sheet (126 in Fig. 4) , The thickness of the first supporting film 522 may be smaller than the thickness of the second supporting film 524. In one example, the thickness of the first support film 522 may be about 40 micrometers, and the thickness of the second support film 524 may be about 60 micrometers. However, the thicknesses of the first and second support films 522 and 524 may be the same, but are not limited thereto. Here, the first support film 522 may have a retardation value in a thickness direction and an in-plane direction to compensate for the viewing angle. At this time, the retardation value in the thickness direction and the in-plane direction may be in the range of -250 nm to +250 mm. Alternatively, the first support film 522 may not have a phase retardation value in the thickness direction and the in-plane direction, and the cost of the first support film 522 may be reduced because the cost is low.

The light absorbing layer 540 on the outer surface of the first support film 522 includes a binder and a light absorbing agent 540a distributed in the binder. The binder may be made of acrylic, and the light absorbing agent 540a includes a material that absorbs light in the wavelength band between red and green. Such a light absorber 540a may comprise a metal coordination-tetraazaporphyrin compound of formula (I).

At this time, based on the acrylic binder, the metal coordination-tetraazaporphyrin compound may be contained in an amount of 0.6 to 1.2 wt%.

When the content of the metal coordination-tetraazaporphyrin compound is greater than 1.2 wt%, the intensity of the absorption spectrum in the 590 nm wavelength region increases and the light absorption rate to the 590 nm wavelength region increases. As a result, the color reproduction rate is improved but the luminance is lowered.

On the other hand, when the content of the metal coordination-tetraazaporphyrin compound is less than 0.6 wt%, the intensity of the absorption spectrum in the 590 nm wavelength region decreases and the light absorption rate to the 590 nm wavelength region decreases. Thus, the luminance is increased but the color reproduction rate is lowered.

Here, preferably, the metal coordination-tetraazaporphyrin compound may be contained in an amount of 0.8 to 1.1 wt%, more preferably about 1.0 wt%, based on the acrylic binder.

Meanwhile, the light absorption layer 540 may have adhesiveness, and the first polarizing plate 118 may be attached to the first substrate 112 (FIG. 4) through the light absorbing layer 540. The light absorbing layer 540 may include a pressure sensitive adhesive (PSA).

The light absorption layer 540 may be formed by a coating method or the like.

As described above, the first polarizing plate 118 according to the third embodiment of the present invention includes the light absorbing layer 540 on one side thereof to remove the overlapped area of the red and green wavelength bands among the light from the LED package, The color reproduction rate of the device can be increased.

At this time, the light absorbing layer 540 may also be used as an adhesive layer to reduce the material, simplify the manufacturing process, and reduce the volume of the liquid crystal display device.

- Fourth Embodiment -

11 is a cross-sectional view schematically showing a second polarizing plate including a light absorbing layer according to a fourth embodiment of the present invention.

11, the second polarizing plate 119 according to the fourth embodiment of the present invention includes a polarizing film 610, first and second supporting films 622 and 624, and a light absorbing layer 630 . At this time, the polarizing film 610 is positioned between the first and second supporting films 622 and 624, and the light absorbing layer 630 is positioned on the outer surface of the first supporting film 622.

The polarizing film 610 may be made of polyvinyl alcohol (PVA), and may be formed by drawing an iodine ion or a dichroic dye on a PVA film and then drawing the polarizing film 610. The polarizing film 610 has an absorption axis in the stretching direction so that light that vibrates in a direction parallel to the absorption axis is absorbed and light that oscillates in a direction perpendicular to the absorption axis is transmitted. The polarizing film 610 may have a thickness of about 25 micrometers.

Each of the first and second support films 622 and 624 may be formed of triacetyl cellulose (TAC), a cyclic olefin polymer or a cyclo-olefin polymer (COP), a polyethylene terephthalate ) Or acryl. The first support film 622 corresponds to the inner support film adjacent to the second substrate 114 of FIG. 4, the second support film 624 corresponds to the outer support film, and the thickness of the first support film 622 May be less than the thickness of the second support film (624). In one example, the thickness of the first support film 622 may be about 40 micrometers, and the thickness of the second support film 624 may be about 60 micrometers. However, the thicknesses of the first and second support films 622 and 624 may be the same, but are not limited thereto. Here, the first support film 622 may have phase delay values in the thickness direction and the in-plane direction to compensate for the viewing angle. At this time, the retardation value in the thickness direction and the in-plane direction may be in the range of -250 nm to +250 mm. Alternatively, the first support film 622 may not have a phase retardation value in the thickness direction and the in-plane direction, and the first support film 622 may be cost-effective because it is inexpensive.

The light absorbing layer 630 on the outer surface of the first support film 622 includes a binder and a light absorbent 630a distributed in the binder. The binder may be made of acrylic, and the light absorber 630a includes a material that absorbs light in the wavelength band between red and green. Such a light absorber 630a may comprise a metal coordination-tetraazaporphyrin compound of formula (I).

At this time, based on the acrylic binder, the metal coordination-tetraazaporphyrin compound may be contained in an amount of 0.6 to 1.2 wt%.

When the content of the metal coordination-tetraazaporphyrin compound is greater than 1.2 wt%, the intensity of the absorption spectrum in the 590 nm wavelength region increases and the light absorption rate to the 590 nm wavelength region increases. As a result, the color reproduction rate is improved but the luminance is lowered.

On the other hand, when the content of the metal coordination-tetraazaporphyrin compound is less than 0.6 wt%, the intensity of the absorption spectrum in the 590 nm wavelength region decreases and the light absorption rate to the 590 nm wavelength region decreases. Thus, the luminance is increased but the color reproduction rate is lowered.

Here, preferably, the metal coordination-tetraazaporphyrin compound may be contained in an amount of 0.8 to 1.1 wt%, more preferably about 1.0 wt%, based on the acrylic binder.

Meanwhile, the light absorbing layer 630 may have adhesiveness and the second polarizing plate 119 may be attached to the second substrate 114 (FIG. 4) through the light absorbing layer 630. At this time, the light absorbing layer 630 may include a pressure sensitive adhesive (PSA).

The light absorption layer 630 may be formed by a coating method or the like.

The second polarizing plate 119 may further include a surface treatment layer 640 on the outer surface of the second support film 624. [ The surface treatment layer 640 may have functions such as low reflection, anti glare and / or hard coating by surface treatment. The surface treatment layer 640 may be made of acrylic, but is not limited thereto.

As described above, the second polarizing plate 119 according to the fourth embodiment of the present invention includes the light absorbing layer 630 on one side thereof, thereby removing the overlapped region of the red and green wavelength bands among the light from the LED package, The color reproduction rate of the device can be increased.

At this time, the light absorbing layer 630 may also be used as an adhesive layer to reduce the material, simplify the manufacturing process, and reduce the volume of the liquid crystal display device.

Meanwhile, in the fourth embodiment of the present invention, since the external light incident on and reflected by the liquid crystal panel (110 of FIG. 4) is absorbed by the light absorbing layer 630, reflection of external light is reduced. As a result, the contrast ratio can be increased.

Further, in the fourth embodiment of the present invention, when light from the backlight unit (120 in Fig. 4) passes through the liquid crystal panel (110 in Fig. 4) and is output to the outside, light scattered, diffracted, or reflected by the liquid crystal layer Absorbed by the light absorbing layer 630 of the second polarizing plate 119, the polarizing degree of the second polarizing plate 119 can be increased and the black visual feeling can be further reduced. Accordingly, the front contrast ratio can be increased and the viewing angle characteristics can be improved.

- Fifth Embodiment -

12 is a cross-sectional view schematically showing a second polarizing plate including a light absorbing layer according to a fifth embodiment of the present invention.

12, the second polarizing plate 119 according to the fifth embodiment of the present invention includes a polarizing film 710, a protective film 722, a light absorbing layer 724, and an adhesive layer 730 do. At this time, the polarizing film 710 is positioned between the protective film 722 and the light absorbing layer 724, and the adhesive layer 730 is positioned on the outer surface of the protective film 722.

The polarizing film 710 may be made of polyvinyl alcohol (PVA), and the polarizing film 710 may be formed by stretching iodine ions or dichroic dyes after dyed PVA film. The polarizing film 710 has an absorption axis in the stretching direction, absorbing light oscillating in a direction parallel to the absorption axis, and transmitting light oscillating in a direction perpendicular to the absorption axis. The polarizing film 710 may have a thickness of about 25 micrometers.

The protective film 722 may be made of triacetyl cellulose (TAC), a cyclic olefin polymer or a cyclo-olefin polymer (COP), polyethylene terephthalate (PET) . At this time, the protective film 722 is disposed adjacent to the second substrate (114 in FIG. 4) and may have phase retardation values in the thickness direction and the in-plane direction for viewing angle compensation. At this time, the retardation value in the thickness direction and the in-plane direction may be in the range of -250 nm to +250 mm. Alternatively, the protective film 722 may not have a retardation value in the thickness direction and in the in-plane direction, and the protective film 722 may be cost-effective because it is inexpensive.

The adhesive layer 730 on the outer surface of the protective film 722 may include a pressure sensitive adhesive PSA and the second polarizing plate 119 may be bonded to the second substrate 114 .

Here, the case where the second polarizing plate 119 includes the adhesive layer 730 has been described, however, the adhesive layer 730 may be formed on the second substrate 114 (FIG. 4).

On the other hand, the light absorbing layer 724 includes a binder and a light absorbent 724a distributed in the binder. The light absorber 724a comprises a material that absorbs light in the wavelength band between red and green, and this light absorber 724a may comprise a metal coordination-tetraazaporphyrin compound of formula (I).

At this time, based on the binder, the metal coordination-tetraazaporphyrin compound may be contained in an amount of 0.6 to 1.2 wt%.

When the content of the metal coordination-tetraazaporphyrin compound is greater than 1.2 wt%, the intensity of the absorption spectrum in the 590 nm wavelength region increases and the light absorption rate to the 590 nm wavelength region increases. As a result, the color reproduction rate is improved but the luminance is lowered.

On the other hand, when the content of the metal coordination-tetraazaporphyrin compound is less than 0.6 wt%, the intensity of the absorption spectrum in the 590 nm wavelength region decreases and the light absorption rate to the 590 nm wavelength region decreases. Thus, the luminance is increased but the color reproduction rate is lowered.

Preferably, the metal coordination-tetraazaporphyrin compound may be included in an amount of 0.8 to 1.1 wt%, more preferably about 1.0 wt%, based on the binder.

At this time, the binder may be made of triacetyl cellulose, cyclic olefin polymer, polyethylene terephthalate or acrylic.

Here, the protective film 722 serves as an inner supporting film, and the light absorbing layer 724 serves as an outer supporting film. At this time, the thickness of the light absorbing layer 724 may be larger than the thickness of the protective film 722. In one example, the thickness of the light absorbing layer 724 may be about 60 micrometers, and the thickness of the protective film 722 may be about 40 micrometers. However, the thicknesses of the light absorbing layer 724 and the protective film 722 may be the same, but are not limited thereto.

In addition, the second polarizing plate 119 may further include a surface treatment layer 740 on the outer surface of the light absorbing layer 724. The surface treatment layer 740 may have functions such as low reflection, anti glare and / or hard coating by surface treatment. The surface treatment layer 740 may be made of acrylic, but is not limited thereto.

As described above, the second polarizing plate 119 according to the fifth embodiment of the present invention includes the light absorbing layer 724 on one side thereof to remove the overlapped area between the red and green wavelength bands of the light from the LED package, The color reproduction rate of the device can be increased.

On the other hand, in the fifth embodiment of the present invention, since external light incident on and reflected by the liquid crystal panel 110 of FIG. 4 is absorbed by the light absorbing layer 724, reflection of external light is reduced. As a result, the contrast ratio can be increased.

In addition, in the fifth embodiment of the present invention, when light from the backlight unit (120 in Fig. 4) passes through the liquid crystal panel (110 in Fig. 4) and is output to the outside, light scattered, diffracted, or reflected by the liquid crystal layer Absorbed by the light absorbing layer 724 of the second polarizing plate 119, the polarizing degree of the second polarizing plate 119 can be increased and the black visual feeling can be further reduced. Accordingly, the front contrast ratio can be increased and the viewing angle characteristics can be improved.

The second polarizing plate 119 according to the fifth embodiment of the present invention includes a light absorbing layer 724 on the outer side of the polarizing film 710. The light absorbing layer 724 is formed by attaching a light absorbing agent 724a ). Alternatively, a light absorbing layer may be formed outside the polarizing film 710 by adding a light absorbing agent to the surface treatment layer 740, omitting the light absorbing agent 724a of the external supporting film.

As described above, the liquid crystal display according to the fourth and fifth embodiments including the light absorbing layer on the second polarizing plate on the upper side can be applied to the liquid crystal display according to the first to third embodiments including the light absorbing layer on the lower first polarizing plate The reflectance can be lowered and the contrast ratio and viewing angle characteristics can be improved. For example, the reflectance of the liquid crystal display according to the first to third embodiments including the light absorbing layer on the first polarizing plate at about 550 nm is about 5.5%, while the reflectance of the fourth and the The reflectance of the liquid crystal display according to the fifth embodiment is about 3.7%. Therefore, the liquid crystal display devices according to the fourth and fifth embodiments can reduce the reflectance by about 33% as compared with the liquid crystal display devices according to the first to third embodiments.

The liquid crystal display device according to the fourth and fifth embodiments of the present invention has a front contrast ratio of about 8% higher than that of the liquid crystal display devices according to the first to third embodiments in an external environment of 0 Lux brightness, The bright room contrast ratio is improved by about 25%.

Although embodiments of the present invention have been described with respect to a liquid crystal display device including a side-type backlight unit, the present invention can also be applied to a liquid crystal display device including a direct-type backlight unit. In the case of a direct-type backlight unit, .

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 invention as defined in the appended claims. It can be understood that

110: liquid crystal panel 112: first substrate
114: second substrate 118: first polarizer
119: second polarizer 120: backlight unit
122: reflective sheet 124: light guide plate
126: optical sheet 128: LED assembly
130: main frame 140: top frame
150: bottom frame 210: LED chip
220: resin layer 230: mold frame
310, 410, 510: polarizing films 322, 422, 522:
324, 424, 524: second support film 330, 430: adhesive layer
340, 442, 540, 630, 724:
340a, 442a, 540a, 630a, 724a:

Claims (20)

A liquid crystal panel including first and second substrates and first and second polarizers respectively disposed on outer surfaces of the first and second substrates;
A backlight unit disposed below the liquid crystal panel and including a light source,
/ RTI >
The light source includes a first light emitter having a first peak wavelength, a second light emitter having a second peak wavelength larger than the first peak wavelength, and a third light emitter having a third peak wavelength larger than the second peak wavelength and,
Wherein the first polarizing plate includes a light absorbing layer having an absorption peak between the second peak wavelength and the third peak wavelength,
Wherein the first light emitting body includes a light emitting diode chip, the second light emitting body includes a first phosphor, the third light emitting body includes a second phosphor,
Wherein the light emitting diode chip is a blue light emitting diode chip, the first phosphor is a yellow phosphor, the second phosphor is a red phosphor,
The weight ratio between the first phosphor and the second phosphor is 55% and 45%, respectively,
A liquid crystal display device having an overlap ratio of 95% with a digital cinema initiative (DCI) color specification.

delete delete The method according to claim 1,
Wherein the light source further comprises a resin layer, wherein the first phosphor and the second phosphor are located in a resin layer, and the total content of the first phosphor and the second phosphor is 5.8 wt% of the resin layer content Device.
The method according to claim 1,
Wherein the light emitting diode chip is a blue light emitting diode chip, the first phosphor is a yellow phosphor, and the second phosphor is a red phosphor.
The method according to any one of claims 1, 4, and 5,
Wherein the light absorbing layer comprises a metal coordination-tetraazaporphyrin compound of the formula:
The

Wherein M is Ni, Mg, Mn, CO, Cu, Ru, or V, or Mn or Ru coordinated with at least one ligand selected from ammonia, water and halogen atoms, and each of R1, R2, R3, C10 alkyl group or a C6 to C30 aromatic group, and each of a, b, c, and d is 1 or 2.
The method according to claim 6,
Wherein the light absorption layer further comprises a binder, and the content of the metal coordination-tetraazaporphyrin compound is 0.6 to 1.2 wt% based on the binder.
The method according to claim 1,
Wherein the first polarizing plate further comprises a polarizing film, and the light absorbing layer is positioned between the first substrate and the polarizing film.
9. The method of claim 8,
Wherein the light absorbing layer further comprises an adhesive.
The method according to claim 1,
Wherein the first polarizing plate further comprises a polarizing film, and the polarizing film is positioned between the light absorbing layer and the first substrate.
11. The method of claim 10,
Wherein the first polarizing plate is positioned between the first substrate and the backlight unit and the first polarizing plate further comprises first and second base films positioned between the polarizing film and the backlight unit, Wherein the first and second base films are disposed between the first and second base films.
11. The method of claim 10,
Wherein the first polarizing plate is positioned between the first substrate and the backlight unit, and the light absorbing layer further comprises a bead.
11. The method of claim 10,
And the light absorbing layer is in contact with the polarizing film.
11. The method of claim 10,
Wherein the first polarizing plate further comprises a surface treatment layer, and the light absorbing layer is positioned between the surface treatment layer and the polarizing film.
delete delete delete delete delete delete

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