KR20130058264A - Liquid crystal display device - Google Patents

Abstract

PURPOSE: An LCD(Liquid Crystal Display) device is provided to increase brightness and to satisfy BT 709 standard, which is an HDTV(High-Definition Television) standard, by applying an LED using a stable fluorescent material and a color filter suitable for the LED at the same time. CONSTITUTION: A first substrate(112) of a liquid crystal panel(110) includes a plurality of thin film transistors. A second substrate(114) of the liquid crystal panel includes a color filter layer. Each LED(129a) of a backlight unit(120) is a white LED where one or more among red and yellow nitride phosphors are applied to a blue chip. An x-axis of a green color filter pattern has a chromaticity range between 0.270 and 0.280 in an x-y chromaticity coordinate system, and a y-axis has a chromaticity range between 0.555 and 0.565.

Description

[0001] LIQUID CRYSTAL DISPLAY DEVICE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device capable of improving luminance by optimally combining a light source with an LED.

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, exhibits optical anisotropy and polarization properties of a liquid crystal, And the like.

Such a liquid crystal display is an essential component of a liquid crystal panel bonded through a liquid crystal layer between two side-by-side substrates, and realizes a difference in transmittance by changing an arrangement direction of liquid crystal molecules with an electric field in the liquid crystal panel. do.

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

Here, as a light source of the backlight unit, fluorescent lamps such as Cold Cathode Fluorescent Lamps (CCFLs) and External Electrode Fluorescent Lamps (EEFLs) have been widely used. BACKGROUND With light weight trends, light emitting diodes (LEDs), which have advantages in power consumption, weight, and brightness, are replacing fluorescent lamps.

The backlight unit is classified into a direct type and an edge type according to the position of the light source. The direct type backlight unit directly disposes light emitted from the light source by arranging the light source under the liquid crystal panel. The backlight unit of the side-type type is disposed in the light guide plate below the liquid crystal panel, and the light source is disposed on at least one side of the light guide plate to indirectly emit light emitted from the light source by using the refraction and reflection of the light guide plate. It is a method of supplying to a liquid crystal panel.

In particular, the side type backlight unit is easier to manufacture than the direct type backlight unit, and has been widely used due to its light weight and low power consumption.

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

As shown in FIG. 1, the liquid crystal display device 1 includes a liquid crystal panel 10 including the first and second substrates 12 and 14 and a backlight unit 20 positioned behind the liquid crystal panel 10.

The liquid crystal panel 10 and the backlight unit 20 are modularized through the top cover 40, the support main 30, and the cover bottom 50.

The liquid crystal panel 10 plays a key role in image expression. First and second polarizing plates selectively transmit only specific light to the outer surfaces of the first and second substrates 12 and 14. 19a and 19b are attached, respectively.

The backlight unit 20 is interposed between the LED assembly 29, the reflector 25 seated on the cover bottom 50, the light guide plate 23 positioned on the reflector 25, and the upper part of the light guide plate 23. A plurality of optical sheets 21 are included.

The LED assembly 29 is formed by mounting each of the plurality of LEDs 29a on the LED printed circuit board 29b.

The LED assembly 29 is fixed in position by bonding or the like so that the light emitted from the plurality of LEDs 29a faces the light incident surface of the light guide plate 23.

Here, each of the plurality of LEDs 29a is a white LED 29a, and the white LED 29a is a blue chip with one or more of red, yellow, and green phosphors. It can be formed, including.

In this case, silicate is mainly used as the phosphor material, and the LED to which the silicate phosphor is applied has a problem that the color coordinate variation is severe and the luminance is lowered due to deterioration in driving.

Accordingly, studies are being actively conducted to apply phosphor materials that are relatively stable to degradation to LEDs, and the liquid crystal display device must satisfy BT 709 standard, which is a color coordinate standard representing color reproduction ratio of HDTV (High Definition Television). Because of the hard problem.

Accordingly, an object of the present invention for solving the above problems, by applying a phosphor material stable to degradation to the LED, and by applying a red, green, blue color filter pattern having a color coordinate suitable for such LED, reliability and brightness The present invention provides a liquid crystal display device that can be improved.

According to a preferred embodiment of the present invention, a liquid crystal display device includes a first substrate including a plurality of thin film transistors and a color filter layer having red, green, and blue color filter patterns which are sequentially repeated. A liquid crystal panel bonded together when two substrates face each other with a liquid crystal layer interposed therebetween; Including a plurality of LEDs including a backlight unit located on the back of the liquid crystal panel, each of the plurality of LEDs is a white LED applying one or more of red and yellow nitride phosphor to a blue chip (blue chip) The green color filter pattern has a chromaticity range of 0.270 to 0.280 in the x-axis and a y-axis range of 0.555 to 0.565 in the xy chromaticity coordinate system.

The emission spectrum of the white LED has a first peak wavelength range of 440 nm to 450 nm, a second peak wavelength range of 530 nm to 540 nm, and a third peak wavelength range of 580 nm to 590 nm. Four-peak wavelength is characterized by having a range of 630nm or more and 650nm or less.

The red and blue color filter patterns have chromaticity points of (0.661, 0.323) and (0.138, 0.093) in the xy chromaticity coordinate system, respectively.

The green color filter pattern is formed by mixing and mixing a G58 pigment and Y150 pigment.

Alternatively, the green color filter pattern is formed by mixing and mixing a G58 pigment and a Y138 pigment.

According to the present invention, it is possible to improve brightness while satisfying the BT 709 standard, which is an HDTV standard, by applying an LED using a phosphor material stable to deterioration and a color filter suitable thereto.

In particular, it is possible to increase the reliability of the liquid crystal display by preventing color coordinate variation and luminance decrease due to deterioration.

1 is a cross-sectional view of a liquid crystal display device including a conventional side type backlight unit.
2 is an exploded perspective view showing a liquid crystal display according to a preferred embodiment of the present invention.
3 is a perspective view illustrating a part of the liquid crystal panel of FIG. 2;
4 is a graph for comparing and comparing the color coordinates of the liquid crystal display according to the LED application.
FIG. 5 is a graph illustrating a comparison of spectra between the backlight units of FIG. 4; FIG.
6 is a graph for explaining color coordinates of the liquid crystal display according to the present invention;
7 is a graph for comparing and comparing spectral transmittance spectra of a general green color filter pattern and a green color filter pattern according to the present invention;
8A to 8E are views illustrating a manufacturing process of a color filter substrate according to a preferred embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

2 is an exploded perspective view illustrating a liquid crystal display according to a preferred embodiment of the present invention, and FIG. 3 is a perspective view partially showing the liquid crystal panel of FIG. 2.

As shown in FIG. 2, the liquid crystal display device 100 includes a liquid crystal panel 110, a backlight unit 120, and a support main 130 for modularizing the liquid crystal panel 110 and the backlight unit 120. The top cover 140 and the cover bottom 150 is included.

The liquid crystal panel 110 plays a key role in image expression, and is composed of first and second substrates 112 and 114 bonded to each other with the liquid crystal layer 190 therebetween.

Referring to FIG. 3, the liquid crystal panel 110 extends in a first direction on the first transparent insulating substrate 112a under the premise of an active matrix method. A plurality of gate lines 113 and a plurality of data lines 115 extending in a second direction orthogonal to the first direction are formed so that the plurality of gate lines 113 and the data lines 115 intersect with each other. Pixel region P is defined.

Each of the pixel regions P includes a thin film transistor TFT and a pixel electrode 117. The thin film transistor Tr includes a plurality of gate lines 113 and data lines. It is formed at the intersection of 115 so as to be in one-to-one correspondence with the pixel electrodes 117 provided in the pixel regions P.

The gate wiring 113 and the data wiring 115 mainly use a metal having excellent electrical conductivity and relatively low resistivity.

The second substrate 114, which is referred to as the upper substrate or the color substrate and faces the first substrate 112 having the above configuration, is formed under the second transparent insulating substrate 114a and the gate wiring 113 and the data wiring ( 115) In order to cover the non-display elements corresponding to the thin film transistor Tr or the like, a lattice-shaped black matrix 122 is formed to surround each pixel region P. Each of the pixel regions P is formed within the lattice. The color filter layer 126 formed of the red, green, and blue color filter patterns 126a, 126b, and 126c sequentially arranged in succession is formed.

Here, the red color filter pattern 126a included in the color filter layer 126 has a chromaticity point of (0.661, 0.323) in the xy chromaticity coordinate system, and the blue color filter pattern 126c has (0.138, 0.093) in the xy chromaticity coordinate system. Has a chromaticity point of. The green color filter pattern 126b has an x-axis ranging from 0.270 to 0.280 in the xy chromaticity coordinate system, and a y-axis ranging from 0.555 to 0.565, most preferably (0.277, 0.560) in the xy chromaticity coordinate system. It is characterized by having a point.

Here, the red color filter pattern 126a may be formed to have a chromaticity point of (0.661, 0.323) in the xy chromaticity coordinate system by appropriately mixing and mixing the R254 pigment and the R177 pigment. The blue color filter pattern 126c may be formed to have a chromaticity point of (0.138, 0.093) in the xy chromaticity coordinate system by appropriately mixing and blending the B15-6 pigment and the V23 pigment. In addition, the green color filter pattern 126b may be formed to have a chromaticity point of (0.277, 0.56) in the xy chromaticity coordinate system by appropriately mixing and blending the G58 pigment and the Y150 pigment or the G58 pigment and the Y138 pigment. In addition, the blue color filter pattern 126c may be formed such that the x-axis has a range of 0.270 to 0.280 and the y-axis has a range of 0.555 to 0.565 in the xy chromaticity coordinate system by properly mixing and blending the B15-6 pigment and the V23 pigment. .

By forming the transparent common electrode 128 on the front surface of the color filter layer 126, a vertical electric field is generated between the common electrode 128 on the second substrate 114 and the pixel electrode 117 on the first substrate 112. The common electrode 128 may be formed on the first substrate 112 together with the pixel electrode 117 to generate a horizontal electric field.

In order to prevent leakage of the liquid crystal layer 190 interposed in the spaced apart space between the first substrate 112 and the second substrate 114, the most between the first substrate 112 and the second substrate 114. By including a seal pattern (not shown) printed along the outer edge, the first substrate 112 and the second substrate 114 are joined to form the liquid crystal panel 110.

The outer surfaces of each of the first substrate 112 and the second substrate 114 are provided with first and second polarizing plates (not shown) for selectively transmitting only specific light.

In addition, the printed circuit board 118 is connected through at least one edge of the liquid crystal panel 110 through a connecting member 116 such as a flexible circuit board or a tape carrier package (TCP). At the side of the support main 130 or the cover bottom 150 is properly folded to be in close contact.

In the liquid crystal panel 110 having the above-described structure, the thin film transistor Tr selected for each gate wiring 113 is turned on by an on or off signal of a gate driving circuit transmitted through the printed circuit board 118. When the signal voltage of the data driving circuit is transmitted to the pixel electrode 117 through the data line 115, the arrangement direction of the liquid crystal molecules is changed by the electric field between the pixel electrode 117 and the common electrode 128. Change to show the transmittance difference.

On the rear surface of the liquid crystal panel 110, a backlight unit 120 is provided to supply light so that the difference in transmittance can be displayed as an image.

The backlight unit 120 includes a light source disposed along one inner side surface of the cover bottom 150, a reflection plate 125 mounted on the cover bottom 150, and a light guide plate 123 mounted on the reflection plate 125. [ And a plurality of optical sheets 121 interposed therebetween.

An LED 129a is used as the light source, and each of the plurality of LEDs 129a is spaced apart from each other at a predetermined interval to be mounted on a printed circuit board (PCB) 129b to form an LED assembly 129.

In this case, each LED 129a may be a white LED using one or more of red and yellow phosphors on a blue chip, and the phosphor material may be formed of a nitride that is thermally stable. It is characterized by. By applying the LED 129a to which the night light phosphor is applied together with the color filter layer 126 described above, it is possible to satisfy the BT 709 standard, which is a color coordinate standard representing color gamut of HDTV (High Definition Television). This will be described later in detail.

The LED assembly 129 is fixed in position by an adhesive or the like so that the light emitted from the plurality of LEDs 129a faces the light-incoming portion of the light guide plate 123.

The light emitted from the plurality of LEDs 129a of the LED assembly 129 is indirectly supplied to the liquid crystal panel 110 by using the refraction and reflection of the light guide plate 123. [

Here, the printed circuit board 129b may correspond to a metal core printed circuit board having a heat dissipation function. A heat sink (not shown) may be provided on a rear surface of the metal core printed circuit board. Heat generated from each of the plurality of LEDs 129a may be discharged to the outside.

The reflective plate 125 reflects the light passing through the rear surface of the light guide plate 123 toward the liquid crystal panel 110 to improve the brightness of the light.

The light guide plate 123 guides light emitted from each of the plurality of LEDs 129a to serve as a high quality surface light source.

The light guide plate 123 may be made of polymethyl methacrylate (PMMA) or polymethacrylic styrene (MS) resin in which polymethyl methacrylate (PMMA) and polystyrene (PS) are mixed .

On the other hand, a pattern for guiding light may be formed on the back surface of the light guide plate 123. The pattern may be formed in the form of an embossed or embossed pattern through a printing method or an injection method, and a circular pattern, An elliptical pattern, a polygon pattern, a hologram pattern, and the like.

The plurality of optical sheets 121 interposed on the light guide plate 123 diffuse or condense the light converted into the surface light source by the light guide plate 123 so that a more uniform surface light source is incident on the liquid crystal panel 110. do.

The plurality of optical sheets 121 may be made of, for example, a diffusion sheet for diffusing light, a prism sheet for condensing light, and a protective sheet for protecting the prism sheet and serving to assist light diffusion.

As described above, the liquid crystal panel 110 and the backlight unit 120 are modularized through the support main 130, the top cover 140, and the cover bottom 150.

The top cover 140 has a rectangular frame shape in which a cross section is bent in a-shape so as to cover the front edge of the liquid crystal panel 110 and a part of the side surface of the support main 130, and the front cover 140 is implemented in the liquid crystal panel 110. Allows an image to be displayed.

The support main 130 has a rectangular frame shape and separates the liquid crystal panel 110 and the backlight unit 120 while supporting the rear edge of the liquid crystal panel 110 and covers the cover unit 150 on which the backlight unit 120 is seated. And surround the edge of the liquid crystal panel 110.

In addition, the cover bottom 150, on which the backlight unit 120 is mounted and is the basis of the entire structure of the liquid crystal display module 100, has a rectangular plate shape, and the LED assembly 129 is disposed along one inner surface thereof.

Accordingly, the liquid crystal panel 110 and the backlight unit 120 have a top cover 140 covering the top edge of the liquid crystal panel 110 in a state where the edges are surrounded by the support main 130 having a rectangular frame shape, and the backlight unit 120. The cover bottom 150 covering the rear surface is coupled to each other in front and rear, and is integrated and modularized through the support main 130.

The light emitted from each of the plurality of LEDs 129a of the backlight unit 120 enters the inside of the light guide plate 123 and is refracted toward the liquid crystal panel 110 inside the light guide plate 123, And is supplied to the liquid crystal panel 110 while being processed into a more uniform high-quality surface light source while passing through the plurality of optical sheets 121 together with the light reflected by the plurality of optical sheets 121.

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

Hereinafter, the LED and the color filter layer according to the present invention will be described in more detail with reference to the graph.

4 is a graph for comparing and comparing the color coordinates of the liquid crystal display according to the LED application, FIG. 5 is a graph for comparing and comparing the spectrum between the backlight units of FIG. 4, and FIG. 6 is a color coordinate of the liquid crystal display according to the present invention. This is a graph to explain.

Here, the color coordinate of BT 709, which is a color coordinate standard representing the color reproduction ratio of HDTV, is referred to as reference (A), and the color coordinates of a general liquid crystal display including a LED to which a silicate phosphor having a deteriorating characteristic is applied are compared. A1), the color coordinates of the liquid crystal display device including the LED to which the nitride phosphor is stable to deterioration is referred to as Comparative Example 2 (A2), the liquid crystal display according to the present invention including an LED to which the nitride phosphor is applied and a color filter layer suitable thereto The color coordinates of the device are referred to as Example (C).

Accordingly, referring to FIG. 4, Comparative Example 1 (A1), which is a general liquid crystal display device, is close to the reference A and satisfies the BT 709 standard. However, Comparative Example 2 (A2), which is a liquid crystal display device to which nitride phosphor is applied, It can be seen that the green color coordinate g2 deviates by 1/100 or more from the reference (A) green color coordinate g and does not satisfy the BT 709 standard. Accordingly, Comparative Example 2 (A2) is relatively stable to deterioration unlike Comparative Example 1 (A1) having deterioration characteristics, but the green color coordinate g2 does not satisfy the BT 709 criterion A and the actual color on the screen of the liquid crystal display. There is a problem that can not express or lack to a specific color to express.

This is due to the difference in the emission spectrum between the silicate phosphor and the nitride phosphor. As shown in FIG. 5, the emission spectrum of Comparative Example 1 (A1) has a first to third peak wavelength, and the first peak wavelength is 440 nm or more and 450 nm. The second peak wavelength has a range of 550 nm or more and 560 nm or less, and the third peak wavelength has a range of 630 nm or more and 650 nm or less.

On the other hand, the emission spectrum of Comparative Example 2 (A2) has a first to fourth peak wavelength, the first peak wavelength has a range of 440nm or more and 450nm, the second peak wavelength has a range of 530nm or more and 540nm or less, The third peak wavelength has a range of 580 nm or more and 590 nm or less, and the fourth peak wavelength has a difference of 630 nm or more and 650 nm or less.

Accordingly, in the present invention, the LED (129a of FIG. 2) to which the nitride phosphor is applied and the color filter layer (126 of FIG. 3) having color color coordinates suitable for this are applied together. Here, the red color filter pattern (126a of FIG. 3) included in the color filter layer 126 has a chromaticity point of (0.661, 0.323) in the xy chromaticity coordinate system, and the blue color filter pattern (126c of FIG. 3) has an xy chromaticity coordinate system. Has a chromaticity point of (0.138, 0.093) at, and the green color filter pattern (126b of FIG. 3) has photosensitivity ranging from 0.270 to 0.280 in the xy chromaticity coordinate system, and y-axis in the chromaticity range from 0.555 to 0.565 in the xy chromaticity coordinate system. The coloring composition is used, in particular, the photosensitive coloring composition is formed such that the green color filter pattern (126c in FIG. 3) is suitable for the LED (129a in FIG. 2) to which the nitride phosphor is applied.

This invention will be described in detail with reference to FIGS. 6 and 7.

First, referring to FIG. 6, in Comparative Example 2 (A2), the green color coordinate g2 deviates by 1/100 or more from the reference color A green color coordinate g and does not satisfy the BT 709 standard. It can be seen that Example (C), which is a device, is close to the reference (A) and satisfies the BT 709 standard as in Comparative Example 1 (A1).

Particularly, according to the present invention, the photosensitive coloring composition of the green color filter pattern 126c is formed to be suitable for the LED (129a of FIG. 2) to which the nitride phosphor is applied, unlike the Comparative Example 1 (A1). It is possible to further improve the luminance of the liquid crystal display device 100 (in FIG. 2) while preventing deterioration of 129a.

This is because the spectral transmittance of the green color filter pattern 126c of FIG. 3 is higher than that of the green color filter pattern of Comparative Example A1, as shown in FIG. 7. to be.

For example, referring to Table 1 below, when the G58 pigment and Y150 pigment are used as the photosensitive coloring composition of the green color filter pattern, the transmittance of the green color filter pattern included in Comparative Example (A1) is 59.65. The transmittance of the green color filter pattern (126c of FIG. 3) included in (C) is 61.3, which is about 2.8% higher than that of Comparative Example A1, and as a result, the luminance is improved.

Color coloring
Composition Of Comparative Example (A1)
Color coordinates by color Of Example (C)
Color coordinates by color x y Transmittance x y Transmittance Red color filter pattern R254 / R177 0.661 0.323 17.33 0.661 0.323 17.33 Green color filter pattern G58 / Y150 0.274 0.572 59.65 0.277 0.560 61.30 G58 / Y138 - - - 0.277 0.560 63.08 Blue color filter pattern B15-6 / V23 0.138 0.093 10.25 0.138 0.093 10.25

In addition, using the G58 pigment and Y138 pigment not used in Comparative Example (A1), the transmittance of the green color filter pattern (126c in Fig. 3) included in Example (C) is 63.08, G58 pigment and Y150 pigment The transmittance is improved by about 5.8% than the transmittance of the comparative example (A1) used, and as a result, the luminance is further improved. This is because Y138 pigment has a higher transmittance than Y150 pigment.

Hereinafter, a process of forming a second substrate having a color filter layer according to the present invention will be described with reference to the drawings.

As shown in FIG. 8A, after the metal material or the black resin material is coated on the transparent insulating substrate 114a, the first to third openings 160a, 160b, and 160c are sequentially repeated through photolithography. Form a Black Matrix (122).

Subsequently, as shown in FIG. 8B, one of red, green, and blue colors, for example, red, on the insulating substrate 114a on which the black matrix 122 having the first to third openings 160a, 160b, and 160c is formed. The photosensitive material is applied to the entire surface to form a red photosensitive material layer 133a, and a mask process is performed to pattern the photosensitive material. Thus, a red color is formed on the first opening 160a of the black matrix 122 as shown in FIG. 8C. The filter pattern 126a is formed.

As shown in FIG. 8D, a green photoresist is applied on the insulating substrate 114a on which the red color filter pattern (126a of FIG. 2) is formed, and a mask process is performed to pattern the red color filter pattern ( The green color filter pattern 126b is formed in the second opening 160b of the black matrix 122 adjacent to the 126a), and the mask process is performed once in the same manner to thereby black the neighboring green color filter pattern 126b. By forming the blue color filter pattern 126c in the third opening 160c of the matrix 122, the red, green, and blue color filter patterns 126a, 126b, and 126c are sequentially repeated on the insulating substrate 114. The color filter layer 126 is completed.

Subsequently, as illustrated in FIG. 8E, the planarization layer 127 may be formed to compensate for the step difference of the color filter layer 126.

The common electrode 128 of FIG. 3 may be formed on the planarization layer 127, and the common electrode 128 of FIG. 3 may be formed on the first substrate 112 of FIG. 3. .

The embodiments of the present invention as described above are merely illustrative, and those skilled in the art can make modifications without departing from the gist of the present invention. Accordingly, the protection scope of the present invention includes modifications of the present invention within the scope of the appended claims and equivalents thereof.

110: liquid crystal panel 112: first substrate (112a: first insulating substrate)
113: gate wiring 115: data wiring
114: second substrate (114a: second insulating substrate) 122: black matrix
126: color filter layer (126a: red color filter pattern, 126b: green color filter pattern, 126c: blue color filter pattern)
120: backlight unit 121: multiple optical sheets
123: Light guide plate 125: Reflective plate
129: LED assembly (129a: LED, 129b: printed circuit board)

Claims (5)

A liquid crystal panel in which a first substrate having a plurality of thin film transistors and a second substrate including a color filter layer in which red, green, and blue color filter patterns are sequentially formed face each other with a liquid crystal layer interposed therebetween;
It includes a backlight unit located on the back of the liquid crystal panel including a plurality of LEDs,
Each of the plurality of LEDs is a white LED in which at least one of red and yellow nitride phosphors is applied to a blue chip,
The green color filter pattern is
A liquid crystal display device having a chromaticity range of 0.270 to 0.280 in the xy chromaticity coordinate system and a chromaticity range of 0.555 to 0.565 in the y axis.
The method of claim 1,
The emission spectrum of the white LED is
The first peak wavelength ranges from 440 nm to 450 nm, the second peak wavelength ranges from 530 nm to 540 nm, the third peak wavelength ranges from 580 nm to 590 nm, and the fourth peak wavelength ranges from 630 nm to 650 nm. A liquid crystal display device having the following range.
The method of claim 1,
The red and blue color filter patterns are respectively
A liquid crystal display device having chromaticity points of (0.661, 0.323) and (0.138, 0.093) in an xy chromaticity coordinate system.
The method of claim 1,
The green color filter pattern is formed by mixing and mixing a G58 pigment and Y150 pigment.
The method of claim 1,
The green color filter pattern is formed by mixing and mixing a G58 pigment and a Y138 pigment.

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