TW201013236A - Optical filter for compensating for color shift and display device having the same - Google Patents

Abstract

An optical filter for compensating for color shift is provided in front of a display panel of a display device. The optical filter includes a background layer and a green wavelength absorption pattern provided with a predetermined thickness on the background layer. The green wavelength absorption pattern absorbs a green wavelength of light. The green wavelength absorption pattern contains a material that absorbs a green wavelength of light in the range of 510 nm to 560 nm, and can also contain a white light absorbing material. A green's complementary color absorbing part absorbs a wavelength of light complementary to green, and contains at least one of a material absorbing a blue wavelength of light in the range of 440 nm to 480 nm and a material absorbing a red wavelength of light in the range of 600 nm to 650 nm. A first thick-film layer, a first thin-film layer, and a second thick-film layer are stacked over one another in the order named.

Description

201013236 VI. Description of the Invention: This application claims the priority of the following Korean Patent Application: Korean Patent Application No. 10-2008-0092655, filed on Sep. 22, 2008, and Korean Patent Application, filed on Sep. 22, 2008 Korean Patent Application No. 10-2008-0092657, filed on September 22, 2008, and Korean Patent Application No. 10-2008-0098120, 2009, filed on September 22, 2008 Korean Patent Application No. 10-2009-0009883, filed on the date of February 6, and Korean Patent Application No. 10-2009-0087906, filed on Sep. 17, 2009, the entire contents of which are All objects are incorporated herein by reference. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter for compensating for color shifts, particularly relating to a pulverizer that is provided before a display panel to minimize color shift depending on viewing angles. Regarding a display device having the same _ [Prior Art] In response to the recent emergence of the high-order information society, the components and devices are being significantly improved and rapidly distributed. Among them, image display devices to be used for televisions, personal computer monitors, etc. are widely distributed. In addition, attempts have been made to increase the size of the display device while reducing its thickness. In general, a liquid crystal display (LCD) is a type of flat panel display that uses liquid crystal display images. LCDs are widely used in the industry because of their advantages such as light weight, low driving voltage, and low power consumption of 201013236 compared to other display devices. Fig. 1 is a conceptual diagram schematically showing the basic structure and operation principle of the LCD 100. For example, a vertical alignment (VA) LCD includes two polarized films 110 and 120 whose optical axes are perpendicular to each other. The liquid crystal molecules 150 having birefringence characteristics are disposed between two transparent substrates 130 coated with transparent electrodes ι4 〇 β. When an electric field is applied from the power source unit ι8 ,, the liquid crystal molecules move and are aligned vertically. In the electric field. Light emitted from the backlight unit is linearly polarized after being transmitted through the first polarizing film 12. As shown on the left side of Fig. 1, the liquid crystal remains perpendicular to the substrate when the power is turned off. The liquid crystal may not have any effect on the polarization of light in this state. As a result, the light that maintains the linear polarization state is blocked by the second polarization film i. The light sleeve of the second polarization film 110 is perpendicular to the optical axis of the first polarization film 120. Φ is as shown on the right side of FIG. It is shown that when a voltage is applied, the liquid crystal is shifted between the two orthogonally polarizing films 110 and 120 to a horizontal position parallel to the substrate by responding to the electric field. Therefore, 'linearly polarized light from the first polarized film is converted to another linearly polarized light'. The polarization direction of the other linearly polarized light is perpendicular to the linearly polarized light, the circle transmitted from the first polarized film. The polarization direction of the polarized light or the elliptically polarized light is transmitted through the liquid crystal molecules before it just reaches the second polarized film, and the converted light can then be transmitted through the second polarized film. It is possible to gradually change the orientation of the liquid crystal from the vertical position to the horizontal position by adjusting the intensity of the electric field, and thereby control the intensity of the light emission. 201013236 Fig. 2 is a conceptual diagram illustrating the orientation and transmittance of a liquid crystal depending on the viewing angle. When liquid crystal molecules are aligned in a predetermined direction in the pixel 220, the orientations of the liquid crystal molecules appear to be different from each other depending on the viewing angle. When viewed along the line 210 from the upper left side, the liquid crystal molecules appear to align as they are in a generally horizontal orientation 212, and the image is relatively bright. When viewed from above along line 230, the liquid crystal molecules are observed to be aligned on orientation 232 which is the same as the actual orientation of the liquid crystal molecules within pixel 220. Moreover, when viewed along line 25 from the upper right side, the liquid crystal molecules appear to align as if they were in a substantially horizontal orientation 252, and the image is relatively dark. Therefore, the viewing angle of the LCD is extremely limited compared to other displays that emit light spontaneously' because the intensity and color of the light of the LCD vary depending on the viewing angle. Many studies have been conducted to improve the perspective. Figure 3 is a conceptual diagram illustrating a conventional practice of reducing the variation in contrast and color shift depending on the viewing angle. Referring to Fig. 3, a pixel is divided into two pixel portions, i.e., the first pixel portion 320 and the second pixel portion 34 (), the orientations of which are symmetrical with each other. Both the orientation of the liquid crystal in the first pixel portion 32A and the orientation of the liquid crystal in the second pixel portion 340 can be seen. The intensity of the light reaching the blaster is the total intensity of the light from the two pixel portions ❶ when viewed from the upper left side along line 3 10, the liquid crystal molecules in the first pixel portion 32 看起来 appear as if they were in the horizontal orientation 312 The upper alignment, and the liquid crystal molecules in the first-pixel portion 320 appear as if they are aligned on the vertical orientation 201013236. Then, the first pixel portion | 32g may appear bright. Similarly, when viewed from the upper right side along line 350, the liquid crystal molecules in the first pixel portion 32 are aligned as if they were aligned on the vertical alignment 352, and the liquid crystal molecules in the first pixel portion 340 look like Aligned on the horizontal orientation 354, and then, the second pixel portion 34 can appear bright. Moreover, when viewed from above, the liquid crystal molecules are observed to be aligned on orientations 332 and 334 which are the same as the actual orientation of the liquid crystal molecules within pixel portions 32 and 3 of the buckle. Therefore, the brightness of the image observed by the user remains the same or similar even when the viewing angle changes and symmetry with respect to the vertical centerline of the image. Therefore, this makes it possible to reduce variations in contrast and color shift depending on the viewing angle. Figure 4 is a conceptual diagram illustrating another conventional practice of reducing the variation in contrast and color shift depending on the viewing angle. Referring to Fig. 4, an optical film 42A having birefringence characteristics is added. The birefringence characteristic of the optical film 420 is the same as that of the liquid crystal molecules in the pixel _·440 of the 1CD panel and has an orientation opposite to the orientation of the liquid crystal molecules. Due to the orientation of both the liquid crystal molecules within the pixel 440 and the birefringent material of the optical film, the intensity of light reaching the user is the total intensity of light transmitted through both the optical film 420 and the pixel 440. In particular, as viewed from the upper left side along line 410, the liquid crystal molecules within pixel 440 appear to align as they are in horizontal orientation 414 and the imaginary liquid crystal molecules of optical film 420 appear as if they were in vertical orientation 412. quasi. The combined intensity of light is the total intensity of light transmitted through both optical film 420 and pixel 440. Likewise, when 201013236 is viewed from the upper right side along line 450, the liquid crystal molecules within pixel 440 appear to align as they are in vertical orientation 454 and the imaginary liquid crystal molecules of optical film 420 appear to align as they are in horizontal orientation 452. . The resultant intensity of light is the total intensity of light transmitted through both optical film 420 and pixel 440. Moreover, liquid sa molecules are observed to be aligned on orientations 434 and 432 when viewed from above, and orientations 434 and 432 are the same as the orientation of the liquid crystal molecules in pixel 440 and the optical liquid crystal molecules of optical film 420, respectively. However, even if the methods shown in Figs. 3 and 4 are applied, the color shift is still present because the angle of view 'and thus the color changes as the angle of view increases. The information disclosed in the section is only for enhancement of understanding of the prior art, and should not be considered as an admission or in any way suggesting that this information is a prior art known to those skilled in the art. SUMMARY OF THE INVENTION Various aspects of the present invention provide a light fixture that can ensure a wide viewing angle and improve the image quality of a display device by minimizing the color shift depending on the viewing angle. ._ _ Various aspects of the present invention also provide a filter capable of minimizing color shift with respect to all composite colors as the viewing angle is increased, the composite colors including red based composite colors (such as, Sony Red and Medium) Degree red) and composite colors based on blue (such as 'Sony Blue, Purple and Violet Blue'). In one aspect of the present invention, a filter for compensating for color shift before a display panel of a display device may include: a background layer; and a green wavelength absorption having a thickness on the background layer pattern. The 201013236 green wavelength absorption pattern absorbs light of a green wavelength. The green wavelength absorbing pattern may comprise a green wavelength absorbing material that absorbs light of a green wavelength in the range of 51 〇 nm to 560 nm. The green wavelength absorbing pattern may further comprise a white light absorbing material. The filter may further comprise a green complementary color absorbing portion that absorbs light of a wavelength complementary to green. The green complementary color absorbing portion may include at least one selected from the group consisting of: a blue wavelength absorbing material that absorbs light of a blue wavelength in a range of 44 〇 nm to 48 〇 nm, and a A red wavelength absorbing material that absorbs light of a red wavelength in the range of 6 〇〇 nm to 650 nm. The filter may further include a first thick film layer, a first film layer, and a second thick film layer stacked on each other in the above-described order. According to an exemplary embodiment of the present invention as described above, the filter can ensure a wide viewing angle and improve the image quality of the display device by minimizing the color shift according to the viewing angle by using the green wavelength absorbing pattern. Moreover, exemplary embodiments of the present invention may also minimize color shift with respect to all composite colors as the viewing angle increases, including all composite colors based on red (such as Sony Red and Medium Red) and based on blue Composite colors (such as Sony Blue, Purple, and Violet Blue). Furthermore, the green wavelength absorbing pattern is provided to compensate for an increase in color shift according to viewing angle, and the green complementary color absorbing portion is provided to prevent color change of light emitted from the forward direction of the display to cause display The original color can be maintained. 201013236 The method and apparatus of the present invention have other features and advantages, which will be apparent from or in conjunction with the accompanying drawings and the following <RTIgt; It is stated in detail. [Embodiment] Reference will now be made in detail to the preferred embodiments embodiments While the invention will be described in conjunction with the exemplary embodiments, it should be understood that Rather, the invention is not intended to be limited to the singular embodiments, and the various alternatives, modifications, equivalents, and other embodiments may be included. The spirit of the present invention is within the scope of Fan Feng. The comparison will be carried out to the fifth point as a diagram showing the change in the spectrum according to the increase in the angle of view when the white light is displayed in full gray scale when both the conventional LCD is applied with the compensated color shift shown in FIG. 3 and FIG. For the chart. As shown in the figure, the intensity of the spectrum is gradually reduced in inverse proportion to the viewing angle. Although the spectra are normalized by dividing each of the spectra by their maximum values to accurately check the degree of decrease according to the wavelength range, it can be understood that the intensity of the normalized spectrum increases from 400 nm to 500 depending on the viewing angle. The decrease in the blue wavelength range of nm is the same even if the intensity is the same in other wavelength ranges depending on the viewing angle. The intensity of this indicator light spectrum is much lower in the blue wavelength range from 400 nm to 500 nm depending on the viewing angle than in 201013236 in other wavelength ranges. Therefore, the yellow color complementary to blue increases as the viewing angle increases. This color change degrades the image quality. Figure 6 is a cross-sectional view of a filter 700 for compensating for color shifts as proposed in the applicant's prior application. The pulverizer 700 shown in Fig. 6 includes a thin film layer 742 and a first thick film layer 744 and a second thick film layer 746 to reduce color shift depending on the viewing angle. The thin dielectric layer 7 42 has a thickness of 780 nm or less and a first refractive index. The first thick film layer 744 is provided on one of the surface layers 742 of the film layer 742 to be thicker than the film layer 742. and has a second refractive index. A second thick film layer 746 is provided on the opposite surface of the film layer 742, thicker than the film layer 742 and having a third index of refraction. The filter reduces the relatively large decrease in brightness in the wavelength range from 3 〇〇 nm to 500 nm depending on the increase in viewing angle of the LCD, which occurs when light is transmitted through the liquid crystal. The filter can thereby reduce the color shift of the white light at full gray level according to the increase in viewing angle. Φ Fig. 7 is a diagram showing the principle of the filter for compensating for the color shift shown in Fig. 6. • The thickness of the film layer 742 is the same or smaller than the wavelength range of visible light. Therefore, the thickness of the film layer 742 is 780 nm or less. If the thickness of the film layer 742 is greater than 78 〇 nm, no constructive or destructive interference occurs in the visible light range. Further, the 'far first thick film layer 744 and the second thick film layer 746 are thicker than the thin layer 742. Thus the thickness of the thick film layers 744 and 746 is greater than 780 nm and may even be a few mm. The first thick film layer 744 and the second thick layer 201013236 may have the same thickness or different thicknesses. The film layer 742, the first thick film layer 744 and the second thick film layer 746 have first, second and third refractive indices, respectively. The first index of refraction may be lower or higher than the second index of refraction and/or the third index of refraction. The filter can be fabricated by sandwiching a thin film layer having a lower refractive index between thick phosphide layers having a higher refractive index. For example, the refractive index of the first thick film layer 744 and the second thick film layer 746 may be in the range of 2 to 4 and the refractive index of the film layer may be in the range of 1 to 2. © Conversely, a film layer with a higher refractive index can be sandwiched between thick film layers with a lower refractive index. In this case, one or more of the thick film layers may be made of glass. If the base substrate is made of tempered glass, it can be used as a thick film layer having a lower refractive index because the tempered glass has a refractive index of about 1.5. In addition to the base substrate, the adhesive layer or the air layer can also be used as a thick film layer having a relatively high refractive index. Of course, a functional film such as an antireflection film, an antiglare film, and an antifogging film can also be used as the thick film layer. Accordingly, the refractive indices of the first thick film layer, the second thick film layer, and the film layer can be modified differently to adjust the transmittance and reflectance of light. The refractive index of the thin layer 742 is represented by η, and the refractive index of the first thick film layer 744 and the second thick film layer 746 is represented by nt. For the sake of convenience, it is assumed that the first thick film layer 744 and the second thick film layer 746 have the same refractive index, but the present invention is not limited thereto. The refractive index of the first thick film layer and the refractive index of the second thick film layer may preferably be the same or have a difference of 丨 or less. The first thick film layer 744 is positioned to face the display panel, and the Second Thickness 12 201013236 The film layer 746 is positioned to face the user. The light incident on the first thick film 744 satisfies the equation derived from Snell's law, nt ntsinet = n〇sin9〇 ...

When light (4) passes through the interface between the first thick film layer 744 and the film layer 742 from the display panel into the film layer 742, one portion of the light 8 (10) refracts as it passes through the interface and another portion of the light 88 Reflect at this interface. In the equation (1), θι denotes the angle (incident angle) of the light 88 〇 with respect to the normal to the interface, and θ denotes the angle (refraction angle) of the refracted light 881 entering the film layer with respect to the normal to the interface. At the interface of the film layer 742 and the second thick film layer 746, the light 881 is again divided into transmitted light 882 (which is refracted as it passes through the interface) and reflected light 883 (which reflects the transmitted light 882 at the interface relative to the The normal angle of the interface between the film layer 742 and the second thick layer 746 is determined by the difference between the refractive index of the film layer 742 and the refractive index of the second thick film layer 746. As long as the first The thick film layer 744 has the same refractive index as the second thick film layer 740, and the light 882 entering the second thick film layer 746 is normal to the interface between the film layer 742 and the second thick film layer 746. The angle is based on the Snell's law, and the angle 0t can be expressed by the angle θ 光 of the light 889 incident on the filter from the display panel, the refractive index nt of the thick film layer, and the refractive index η Ό (=1) of the air. When the light 889 of the panel passes through the filter, the angle of the light exiting the filter according to Snell's law is the same as the angle of incidence θ 。. Therefore, the angle of incidence θ 〇 corresponds to the angle of view of the user. The reflectance can be expressed by Equations 2 and 3 below. 13 201013236

Rp = [(ntcose - ncos0t) / (ntcos0 + ncos0t)] 2 ... Equation 2

Rs - [(ncosG - ntcos0t) / (ncos0 + ntcos0t)] 2 Equation 3 In the above Equations 2 and 3, Rp represents the reflectance of p-polarized light, and

Rs represents the reflectance y of s-polarized light, and the reflectance % and reflectance are known.

Rs varies depending on the refractive index n of the film layer, the refractive index of the thick film layer, the incident angle ^, and the refraction angle θ. In Equation 4 below, the reflectance R is the average of Rs of Equation 2 and Equation 3. The reflected light 883 is again divided into a light ray 887 (which is refracted at the interface) and a light ray 884 (which is reflected at the interface). This refraction and reflection process at the interface is repeated. In Equation 4 below, the transmittance τ is the sum of the transmittance 1 of the transmitted light 882 and the transmittance T: 2 of the transmitted light 885. Although only two refracted rays are shown in Fig. 7, reflection and refraction occur repeatedly at the interface, and the transmittance T is the total transmittance of all the refracted rays. _ In the following Equation 4, the reflectance r of the interface is the sum of the reflectance R1 of the light gw and the reflectance R2 of the light 888. Similarly, although only two reflected rays are shown in Fig. 7, the reflectance r is reflected from the interface. The total reflectance of the light. In the process of repeated reflection of light by the two interfaces defined by the first thick film layer 744, the film layer 742, and the second thick film layer 746, the transmittance may vary depending on the wavelength due to interference. In order to compensate for the color shift of the white light having a high gray level according to the increase of the viewing angle, the thickness of the film layer has a wide refractive index and the interface between the first 201013236 thick film layer and the film layer The reflectance R is adjusted such that the average of the transmittances τ according to Equation 4 can be maximized in the blue wavelength range. τ = (1 - R) 2 / (l + R2 - 2RCOS8) Equation 4 In Equation 4, δ represents that both phase difference light 882 and light 885 between light 882 and light are transmitted through the film. Layer, as expressed in the following equation $. δ δ = (2π/λ) 2η€ο〇8θ ( 〇〇^ θ ^ 8〇〇) Equation 5 In Equation 5, the phase difference S is determined by the refractive index η, the thickness, the refraction angle 0, and the wavelength λ sphere. set. Constructive or destructive interference can occur depending on the phase difference. The maximum transmittance is obtained when an integral multiple of the wavelength of light between the light m and the light milk (both passed through the film layer). When the refractive index η, thickness &quot;: refraction angle β of the film layer is determined for the teaching wavelength range, the phase difference is "determined. Here, the refraction angle 0 is at; 疋 the refractive index η of the film layer, the thickness is equal" The refractive index of the τ 斤 联 增 增 增 增 增 增 。 见 见 见 见 见 见 τ τ τ τ τ τ τ τ τ τ τ τ τ τ τ τ τ τ τ τ τ τ τ τ τ τ τ τ τ The angle α is changed by the angle of view θ0. Field α adjusts the film layer by adjusting the film layer with respect to the angle of view θ. Therefore, the reflectance is determined by the absorbance ratio. ', 11 and the thick film layer are as shown in the above equation 4' The reflectance R and the "radiance τ are determined. Therefore, the phase difference δ is transparent and the refractive index η of the thick film layer and the lotus: the refractive index η of the thin layer is selected. The thickness of the film layer is adjusted relative to 15 201013236. The transmittance of the special viewing angle and the specific wavelength of light. . For example, 3, by selecting the thickness of the film layer to be 780 nm or less and setting the refractive index of the film layer in the range of 1 to 2 and setting the refractive index* of the thick film layer to 2 i 4 A range of towels to increase the transmission of light of a particular wavelength at a large viewing angle. The same result can be obtained by changing the refractive index setting (wherein the refractive index of the film layer is set in the range of 2 to 4 and the refractive index of the thick film layers is set in the range of 1 to 2). ❹ In a filter having a thick film/film/thick film structure, the ratio of the minimum transmittance to the maximum transmittance in the wavelength range of visible light of 38〇11111 to 780 nm may be in the range of 0.5 to 0.9. Therefore, multi-beam interference makes it possible to compensate for the phenomenon that the intensity of light is reduced by a relatively large amount in the blue wavelength range in accordance with the increase in the viewing angle. In particular, in a wide viewing angle range of up to about 80 degrees, the transmittance is attributed to the increase in constructive interference in the blue wavelength range, but is due to the destructive interference decreasing in the green and red wavelength ranges. This can compensate for the imbalance of the blue wavelength range even at large viewing angles by adjusting the decreasing amount of light intensity to be the same or similar over the entire wavelength range. The filter having a thick film/film/thick film structure as shown in Fig. 6 can effectively compensate for the color shift according to the increase in viewing angle and the white light at the full gray level. However, the filter shown in Fig. 6 cannot minimize the color shift of all colors according to the increase in viewing angle. Fig. 8 is a pair of graphs showing changes in the spectrum according to the increase in viewing angle when the white light is displayed in a low gray scale after the conventional method [CD is applied to compensate for the color shift in Figs. 3 and 4). 201013236 Color offset compensation plays an important role in ensuring a wide viewing angle because the LCD exhibits various colors and whites when reproducing actual images or moving pictures. The display industry typically uses thirteen (13) colors such as white, red, blue, green, skin tone, Sony Red, Sony Blue, Sony Green, Cyan, Purple, Yellow, Moderate Red, and Violet Blue as the evaluation criteria. The filters shown in Figure 6 cannot minimize the color shift of all colors individually.

This is because when the light in the high gray level is emitted from the display panel, the brightness of the light decreases in the entire wavelength range according to the increase of the viewing angle, in particular, it decreases more in the blue wavelength range, but decreases in the green wavelength range. Relatively small. However, when the low gray level is first emitted, the lightness of the light rises over the entire wavelength range, specifically in the green wavelength range. Light having a composite color can be obtained by combining green light, red light, and blue light with various gray scales as shown in Table 1 below. Therefore, it is necessary to compensate for the color shift of each of the composite colors according to the increase in the corner angle. Table 1 Color RGB 1 White 255 255 255 2 Red (primary) 255 0 0 3 Green (primary) 0 255 0 4 Blue (primary) 0 0 255 17 201013236 5 Skin 197 151 130 ~~~ 6 Red (Sony) 178 47 -—---- 58 7 Green (Sony) 69 — ----- 150 70 ~~ 8 Blue (Sony) 46 ----- 62 151 ~~~~ 9 Cyan 86 — ---- 133 135 ^ 10 Purple 92 &gt; 59 107 11 Yellow 213 ~~------- 222 53 A 12 Moderate Red 197 ------- 86 —----------- 98 13 Purple Blue 74 92 165 — Figure 9 is a graph showing the color shifts Δ, of the thirteen U3) composite colors in the conventional LCD according to the change in the viewing angle θ, and the ι〇 diagram is an illustration. A graph of the color of the thirteen (13) composite colors (four) Δ_) according to the angle of view in the lcd of the filter shown in Fig. 6 is used. Δ uV W represents the length 纟 between the color coordinates (U., VG) of the 0 degree angle of view and the color coordinates (ue, ve) of the respective angles of view θ and can be expressed by the following equation: Δ uV(e)=[( U〇,)2+(v〇_Ve)2]1/2 In the above graph, the horizontal axis represents the horizontal angle of view. As shown in the graphs of Fig. 9 and Fig. 1, when the filter of Fig. 6 is used, the composite color based on blue is 6 〇. The horizontal (right/left) viewing angle shows a reduction in color shift represented by Η1 and Η2. In contrast, the composite color based on red is 6〇. The horizontal viewing angle 18 201013236 shows an increase in the color shift as indicated by T1 and T2 Λιι'ν%. Therefore, the filter shown in the figure cannot compensate for the color shift of all 13 composite colors. The first embodiment is a perspective view schematically illustrating a filter for compensating for color shift according to the first exemplary embodiment of the present invention. A filter according to a first exemplary embodiment of the present invention is provided in a display

Before the display panel is not installed. The filter of this embodiment is generally applicable to LCD ' but the invention is not limited thereto. As shown in Fig. 11, the filter includes a background layer 1 and a green wavelength absorption pattern 20. In Fig. 11, the green wavelength absorbing pattern 20 is provided on the surface of one of the responsible layers 10 facing the display panel. The green wavelength absorption pattern 2 〇 includes a plurality of green wavelength absorption stripes which are spaced apart from each other at a predetermined interval to be parallel to each other. The green wavelength absorbing pattern can also be provided on the other surface facing the user's background layer or on both surfaces of the background layer. 1 〇 has a predetermined thickness of the green wavelength absorbing pattern 2 该 at the background layer. The green wavelength absorbing pattern may have various shapes as long as it has a thickness that absorbs light of a green wavelength emitted at a predetermined angle of view. For example, the green wavelength absorption pattern may include, but is not limited to, a stripe having a throwing surface, a corrugation having a cross-section, a honeycomb having a cross-sectional matrix, a honeycomb structure having a wedge-shaped cross section, and a stripe having a quadrilateral cross-section 19 201013236. a corrugated structure having a quadrangular cross section, a matrix having a quadrangular cross section, or a honeycomb structure having a quadrangular cross section. Figure u illustrates a green wavelength absorbing pattern 20 comprising stripes having a wedge-shaped cross section. The cross section includes a triangular cross section and a trapezoidal cross section. The green wavelength absorbing pattern can be oriented in various directions with respect to the user, such as orientation in the horizontal and vertical directions. • The green wavelength absorbing pattern can effectively compensate for color shift according to the vertical viewing angle when oriented in the horizontal direction, and The color shift according to the horizontal viewing angle is effectively compensated when oriented in the vertical direction. The green wavelength absorbing pattern 20 may have a predetermined off angle with respect to the longer side of the background layer to prevent the Moire phenomenon. The green wavelength absorption scheme absorbs light of a green wavelength. The green wavelength absorption pattern is provided on one surface of the background layer 10 to increase light absorption over the entire wavelength range by increasing the viewing angle (specifically, greatly increasing light absorption in the green wavelength range from 510 rim to 560 nm) ) to minimize the composite color according to the increase of the viewing angle:: the color deviation of the light. Shift 6 When the light emitted from the display panel has a low gray level, the brightness increases over the entire wavelength range according to the increase of the viewing angle, and the green wavelength The brightness in the range is increased more. Since light having a composite color is obtained by combining green light, red light, and blue light in various gray scales, it is difficult to compensate for all types of composite colors using only the film for compensating color shift as shown in FIG. The color is offset. Therefore, it is possible to minimize the absorption of light in all wavelength ranges by increasing the viewing angle (in particular, increasing the absorption of light of a green wavelength according to the increase in viewing angle) to minimize 20 201013236 according to the increase in viewing angle Color shift of composite color β In order to absorb the green wavelength, the green wavelength absorption pattern 2〇 may contain a green wavelength absorbing material that absorbs light of a green wavelength in the range of 5 10 nm to 560 nm. The green wavelength absorbing material can, for example, be an inorganic or organic material that absorbs light of a green wavelength in the range of 510 nm to 560 nm. Preferably, a pink colorant can be used. The green wavelength absorbing pattern 20 can be produced by filling a trench formed in the surface of one of the background layers with an ultraviolet (UV) curable resin containing a green wavelength absorbing material and irradiating the green wavelength absorbing material in the trench with uv rays. The background layer forms a layer&apos; and is typically made of a transparent polymer resin. The background layer 10 can be formed into a sheet form by, for example, a reel method using a UV curable resin, a hot pressing method using a thermoplastic resin, or an injection molding method using a thermosetting resin. The thickness τ of the glazing layer 10 can preferably be set in the range of 50 μm to 1 mm. The thickness T of the background layer 10 is set to 50 μm or more in order to obtain a more flexible property and a thin profile as long as the mechanical properties and heat resistance of the background layer are ensured. Further, as long as the flexibility, thin profile and light transmittance of the background layer can be ensured, the thickness Τ of the background layer 10 is set to 1 mm or less to give the background layer a superior quality of mechanical properties. The moonlight layer 10 can be made of any highly transparent material that substantially allows light to pass therethrough. For example, the background layer 10 can be made of a group selected from the group consisting of polyester, acrylic, cellulose, polysmoke, polyethylene (PVC), polycarbonate (PC), phenol And the amine methyl 21 201013236 acid ester, which is light, inexpensive and easy to manufacture. The filter may also have a backing layer (not shown) that is provided on one of the surface layers to support the background layer. The backing layer acts as a piece of land. The background layer 10 can be formed on the support during manufacture. The backing layer may preferably be made of a transparent resin film which is transparent to uv. The backing layer can be made of, for example, polyethylene terephthalate (PET), polycarbonate (PC), polyethylene (pvc) or the like. Fig. 12 is a graph showing the color shift of thirteen composite colors according to the change in the viewing angle in the display device using the filter shown in Fig. 11. As shown in Fig. 12, the color shift of the thirteen composite colors is measured in accordance with the increase in the viewing angle in the display device using the filter according to the first exemplary embodiment of the present invention. In particular, the filter according to the first exemplary embodiment of the present invention minimizes a composite color based on red by absorbing a relatively large amount of green wavelength light according to an increase in viewing angle (for example, Sony Red, Medium Red, etc.) ) and the color shift based on the blue composite color (for example, Sony blue, purple, purple blue, etc.). Therefore, this can ultimately minimize the color shift of all composite colors. In particular, the color shift of Διι, ν of 13 composite colors can be filtered by using the color shift Διι'ν' in Fig. 10, which has a value of up to 0.085. The device is reduced to 0.06 or less. Since the color shift auV of 0.085 can be seen by the naked eye, the image quality 22 201013236 is degraded according to the increase in the angle of view. In contrast, a color shift of Διι'ν' of 0.06 or less can be difficult to see through the naked eye. Therefore, this makes it possible to improve image quality in accordance with an increase in viewing angle. Fig. 13 is a graph showing changes in the normalized spectrum according to an increase in the angle of view when the display device of the filter shown in Fig. u is applied to display white light in full gray scale. As shown in Fig. 13, the decreasing amount of the spectrum according to the increase in the viewing angle is substantially the same over the entire wavelength range. Therefore, the color shift according to the increase in the viewing angle is substantially removed. Fig. 14 and Fig. 15 are reference diagrams for explaining the green wavelength absorption pattern 2A. A filter having a green wavelength absorbing pattern 2 含有 containing a green wavelength absorbing material is mounted in the LCD TV and is 6 Å ahead. The viewing angle uses the all white image to measure the color coordinates. ^ When the green wavelength absorbing pattern having a wedge-shaped cross section is filled with the green wavelength absorbing material, the color of the green wavelength absorbing material looks more intense according to the increase in the viewing angle' and the color coordinates are in CIE. 1976 ucs color coordinate system uV moved to pink. Further, when the pattern is filled with a carbon black or cyan wavelength absorbing material and an orange wavelength absorbing material (which will be described later) in addition to the green wavelength absorbing material, the color coordinates shift to purple pink in the color coordinate system nV. In the f color coordinate system, the value (i.e., (v, 6 〇 _ v, 〇) / (u, 6 〇, 〇)) may preferably be in the range of tan (-15.) to tan (45.). . (u, . and is the color coordinate measured in the other side and u'6〇 and v,w is the value of the color coordinate value measured by the angular measurement of 23 201013236.)

Body. The slope of the change of the color coordinates of the strip light absorbing pattern 23 filled with only the green wavelength absorbing material may preferably be at 15 in the color coordinate system u, v. To 45. In the scope. If the light absorbing pattern 23 is filled with carbon black and a green wavelength absorbing material, the slope of the change in color coordinates may preferably be -15 to 15. In the scope. If the light absorbing pattern 23 is filled with the cyan wavelength absorbing material and the orange wavelength absorbing material and the green wavelength absorbing material, the slope of the change in the color coordinates may preferably be -15. To 15. In the scope. Figure 16 and Figure 17 are a pair of graphs showing the effect of refractive index on color shift in a filter with a green wavelength absorption pattern, where the 16th graph exhibits no refractive index and green wavelength absorption in the responsible layer. The color shift according to the viewing angle in the case where the refractive index of the pattern is the same, and FIG. 17 shows the color shift according to the viewing angle in the case where the refractive index of the strange layer is larger than the refractive index of the green wavelength absorption pattern by Ο.%. . In the film in which the green wavelength absorption pattern including the green wavelength absorbing material is formed on the glaze layer, the effect of the refractive index on the color shift is measured under the condition that all other conditions are set to be the same. As shown in Figs. 16 and 17, the color shift is about 〇〇45 when the difference between the background j 0.042 and the refractive index of the background layer and the green wavelength absorption bin is 0.06. The color shifts in substantial differences. In contrast, in the case of the difference, as shown in Table 2 below, the front transmittance in the presence of the refractive index is greater than the difference in the absence of the difference between the refractive indices. Table 2

In Table 2, the difference in transmittance of 4% may have different meanings depending on the amount of light emitted from the display device. For example, if the brightness of the light emitted from the LCD is 5 Gnh (i.e., the level of the portable telephone), the difference is about 2 nit, which is difficult to distinguish by the naked eye. In contrast, if the brightness is nit or more (i.e., the level of LCD τν), the difference is about 2 〇, which can be distinguished by the naked eye. Considering that the brightness of LCD TV is increasing, the increase of transmittance by 4% has important technical significance for itself. [Fig. 16 and Fig. 17 and Table 2 show the filtering of the refractive index of the background layer from the refractive index of the green wavelength absorption pattern. Test results obtained by the device. In contrast, the green wavelength can have a refractive index greater than the refractive index of the background layer. The difference in refractive index between the green wavelength absorbing pattern and the background layer may preferably be in the range of 0.001 to 0,1. <First Embodiment> Fig. 18 is a graph showing the color shift of thirteen (13) colors in accordance with a change in viewing angle in a display device having a filter according to a second embodiment of the present invention. The filter according to the second embodiment has a green wavelength absorbing pattern, 25 201013236 which contains a white light absorbing material capable of absorbing visible light of the entire ice and ρβ field wavelength range and a green wavelength absorbing material. The white light absorbing material may be an inorganic material, an organic material, and/or a metal having a barrier color. More preferably, the white light absorbing material may be carbon black. The green wavelength absorption pattern 20 can be made of a uvg resin containing a green wavelength absorbing material and a white light absorbing material.

For example, the green wavelength absorption pattern 2〇 may include about 1 wt% of the green wavelength absorbing material contained in the uv-curable resin and (4) 5% by weight of the white light absorbing material. The transmittance and viewing angle are determined by the distance between the green wavelength absorption patterns 20, the thickness, the smaller width of the larger width, and the slope of the inclined surface. If the thickness, width, and absorbance of the green wavelength absorbing pattern 20 are reduced, the effect of compensating for the color shift according to the viewing angle is increased. However, the transmittance of light is significantly reduced depending on the viewing angle because the green wavelength absorbing pattern 2 吸收 also absorbs light transmitted through the filter. If the thickness of the green wavelength absorbing pattern 20 is increased, the thickness of the background layer 1 亦 is also increased, which makes it difficult to bend the background layer 1 〇. Since the background layer 1 碎 may be broken when bent to a certain extent, it is not easy to manufacture the background layer 10 by roll forming. Moreover, the resulting background layer 10 is not easily entangled in the form of a roll, thereby causing storage problems. Moreover, increasing the width of the green wavelength absorbing pattern results in a reduction in the aperture ratio (which determines the amount of light transmitted through the filter), thereby reducing the transmittance of light. In addition, increasing the amount of white light absorbing material to enhance the effect of blocking white light also results in an increase in the viscosity of the mixture contained in the pattern, which makes it difficult for 26 201013236 to hit the trench. Therefore, the optimum value should be given to the thickness, width and absorbance of the green wavelength absorption pattern 20. The width of the green wavelength absorbing pattern may preferably be in the range of 丨μιη to 5〇. In the green wavelength absorbing pattern, the width of the bottom side of the wedge-shaped cross section (i.e., the 'larger width') may be 40% or less of the pitch, and the slope of the inclined surface may be 10°. Third Embodiment ❹ Fig. 19 is a cross-sectional view schematically showing a filter according to a third exemplary embodiment of the present invention. Although the light emitted from the front side of the display panel passes through the filter, the color of the image of the display can be changed by the green wavelength absorbing material of the green wavelength absorbing pattern. Therefore, a green complementary color absorbing portion containing a red wavelength absorbing material and a blue wavelength absorbing material as a color correction coloring agent is provided. This configuration is used to correct the φ color of the light emitted in the forward direction to be similar to the original color. Figure 9 shows an exemplary embodiment in which the green complementary color absorbing portion is a green complementary color absorbing layer 40. • A green complementary color absorbing layer 40 is stacked on the surface of the background layer. The green complementary color absorbing layer contains a green complementary color absorbing material containing light of a specific wavelength that absorbs complement to green. The green mutual color absorbing material can absorb red wavelength absorbing material of 6〇〇11111 to 65〇nm in the red wavelength range and allow the green wavelength range to pass through and/or absorb blue wavelength of 44111 to 11111 to 48〇nm. The range is the same as 27 201013236. The material (for example, allows the blue wavelength range to pass through the blue wavelength to absorb 'yellow colorants'). The green complementary color absorbing layer can be embodied in the form of a film or an adhesive layer. If the green complementary color absorbing layer is a separate film, it is a separate film which can be used exclusively for absorbing: green complementary colors or a functional film having other functions. For example, X-described below - the first thick layer - a thin film layer and - the second i film

At least one of them can be used as a green complementary color absorbing layer by constituting a green complementary color absorbing layer material. Although an exemplary embodiment in which the green complementary color absorbing layer is not in contact with the surface of the background layer is shown in Fig. 19, another layer may be lost between the background layer and the green complementary color absorbing layer. The viscosity of the color correction colorant simplifies the filtering if the green complementary color absorbing layer is provided as a structure containing a coating layer or a background layer instead of a separate film and a method of manufacturing the same. 20 is a graph illustrating a change in color coordinates according to an increase in viewing angle when a filter is provided, the filter including only a green wavelength absorbing pattern and not including a green complementary color absorbing portion, and FIG. 21 is A graph illustrating a change in color full scale according to an increase in viewing angle when a light-receiving device is provided, the filter including both a green wavelength absorbing pattern and a green complementary color absorbing portion. As shown in Figures 20 and 21, it can be appreciated that the example shown in Figure 21 can further compensate for the color shift of the composite color. Table 3 below shows the test results for the color coordinates of the white light leaving the display (measured in front of the viewing angle of 〇〇). 28 201013236 Table 3 includes only the green wavelength absorption pattern including the green wavelength absorption pattern and the green complementary color absorption portion. The color coordinates of white light (CIE 1936) (0.28505, 0.292492) (0.3123, 0.3271) ® as shown in Table 3 above. When only the green wavelength absorption pattern is provided, the white light has a color rather than an original achromatic color. In contrast, when the green inter-color absorbing portion/minute is also provided, from the "maintainable original achromatic color", the fourth embodiment is shown in FIG. 22 as a schematic illustration of a fourth exemplary embodiment according to the present invention. A perspective view of the filter. As shown in Fig. 22, the green complementary color absorbing portion may be provided in the form of a green complementary color absorbing sheet 41 on one side of the green wavelength absorbing pattern 20. In Fig. 22, the green complementary color absorbing portion is provided on the back surface of the green wavelength absorbing pattern (i.e., the bottom side of the wedge-shaped cross section). A green wavelength absorbing pattern and a green complementary color absorbing sheet can be formed by a doctor blade method. For example, after forming a green wavelength absorption pattern, green can be formed by applying a uv curing resin containing a green complementary color absorbing material onto a substrate of a green wavelength absorbing pattern in a recessed trench and then curing the uv curing resin. The complementary color absorption sheet 41. 29 201013236 The filter and optical device of this embodiment advantageously has superior light transmittance than the above-described filter of the third exemplary embodiment. The fifth wavelength application pattern may further comprise a material for absorbing orange wavelength light and a material for absorbing cyan wavelength light, the orange wavelength light and the cyan wavelength light having an adverse effect on the color shift according to the viewing angle. The orange wavelength absorbing material and/or the cyan wavelength absorbing material may be contained in an independent tree

The lipid film is contained in the adhesive layer or contained in the background layer. Sixth Embodiment Fig. 23 is a perspective view schematically showing a filter according to a sixth exemplary embodiment of the present invention. As shown in Fig. 23, the filter includes a first thick film layer 12, a first film layer 14, and a second thick film layer 16, which are stacked on each other in the above-described order. As another exemplary embodiment, the filter may further include a second thin film layer and a third thick film layer, followed by the first thick film layer “the first thin film layer and the second thick film layer At least one of the thick film layers may be a background layer, a base substrate for supporting a 'color shifting filter', a front anti-glare film of the display panel, and a pole a film, a retardation film, a diffusion film, an adhesive layer, a gas layer, or an equivalent thereof, but the invention is not limited thereto. Fig. 24 is a view showing the use of the filter shown in Fig. 23. The color shift of thirteen composite colors according to the change of the present angle in the display device of the optical device 30 201013236 by forming a Nb 2 〇 5 film having a thickness of 210 nm on a base substrate of glass and using a pressure sensitive adhesive (pSA) A filter having a green wavelength absorption pattern formed by filling a depressed trench of a background layer with a lwt% green wavelength absorbing material (for example, a pink colorant) is attached to the Nb2〇5 film to fabricate a filter. Where the base substrate of the glass acts as a thick film, Nb2〇5 thin Acts as a thin film and the pSA layer acts as a thick film. Measure the color shift AuV according to the increase of the horizontal viewing angle. As shown in Fig. 24, the figure shown in Fig. 9 is compared with the chart shown in the ninth and tenth figures. The color shift of the 13 composite colors is uniformly reduced. Fig. 25 is a cross-sectional view schematically illustrating a filter according to a seventh exemplary embodiment of the present invention, as shown in Fig. 25, A film including a background layer and a green wavelength absorption pattern formed on the background layer can be used as the thick film layer. As described above, the filter according to an exemplary embodiment of the present invention can be used for compensating colors. An offset filter is provided and can be provided as a composite filter having a composite function by means of the filter and another type of functional filter (eg, The fog film, the anti-reflection film, the anti-glare film, the base substrate, and the like are stacked on each other to manufacture. Further, the optical filter according to an exemplary embodiment of the present invention may be attached to the display panel separately from the display panel or by an adhesive. Although reference has been made to a specific demonstration of the invention The present invention is shown and described, but it will be understood by those skilled in the art that various changes in form and detail may be made without departing from the invention as defined by the appended claims The spirit and scope of the drawings. [Simplified illustration of the drawings] Fig. 1 is a conceptual diagram schematically illustrating the basic structure and operation principle of the LCD; Fig. 2 is a conceptual diagram of the orientation and transmittance of the liquid crystal according to the viewing angle; Figure 3 is a conceptual diagram illustrating a conventional practice of reducing the contrast and color &amp; shift depending on the viewing angle; Figure 4 is a diagram illustrating another conventional attempt to reduce the contrast and color shift depending on the viewing angle. Conceptual diagram; Figure 5 is a diagram showing the change in the spectrum according to the increase in the angle of view when the white light is displayed in full gray scale when both the conventional LCD is applied with the compensated color shift shown in Figs. 3 and 4. Figure 6 is a cross-sectional view of a filter for compensating for color shift proposed in the applicant's prior application; Figure 7 is a view of the figure shown in Figure 6 Filter compensation A schematic diagram of the principle of the offset; FIG. 8 is a diagram showing the spectrum according to the viewing angle when the conventional LCD is applied with the compensated color shift shown in FIGS. 3 and 4, and the white light is displayed in a low gray scale. A pair of graphs with increased changes; Fig. 9 is a graph showing thirteen (13) color shifts of the composite colors (Δwcq) according to changes in the viewing angle θ in the conventional LCD. Fig. 10 is a diagram showing use Figure 13 is a graph of the color shift Δu'v'(e) of the composite color of 32 (13) according to the viewing angle of 32 201013236 in the LCD of the filter shown in Fig. 6; A perspective view of a filter for compensating for color shift according to a first exemplary embodiment of the present invention; FIG. 12 is a view showing a display device using the filter shown in FIG. a chart of color shifts of thirteen composite colors according to a change in viewing angle; Fig. 13 is a view showing a viewing angle when white light is displayed in full gray scale when the display device of the filter shown in Fig. u is applied a graph of the increase in the normalized spectrum; Figures 14 and 15 are used to explain the green wavelength absorption map Reference FIG. 16 and FIG. 17 are graphs illustrating the effect of refractive index versus color shift of a filter arrangement having a green wavelength absorption pattern provided on a background layer, wherein FIG. 16 is shown in FIG. The color shift according to the viewing angle in the case where the refractive index of the background layer is the same as the refractive index of the green wavelength absorbing pattern and FIG. 17 shows the case where the refractive index of the background layer is larger than the refractive index of the green wavelength absorbing pattern. Lower color shift according to viewing angle; FIG. 18 is a color shift of thirteen (13) colors according to a change in viewing angle in the display device having the optical filter according to the second embodiment of the present invention Figure 19 is a cross-sectional view schematically showing a filter according to a third exemplary embodiment of the present invention; Figure 2 is a view showing an increase in viewing angle when a filter is provided 33 A graph of the change in color coordinates of 201013236, the filter including only the green wavelength absorption pattern without including the green complementary color absorbing portion; FIG. 21 is a diagram illustrating changes in color coordinates according to the viewing angle when a filter is provided The filter includes both a green wavelength absorbing pattern and a green complementary color absorbing portion; Fig. 22 is a perspective view schematically showing a pulverizer according to a fourth exemplary embodiment of the present invention;

Figure 23 is a perspective view schematically showing a filter according to a sixth exemplary embodiment of the present invention; and Figure 24 is a view showing a display device in a display device using the filter shown in Figure 23 A graph of color shifts of thirteen composite colors whose angle of view is changed; and Fig. 25 is a cross-sectional view schematically illustrating a filter according to a seventh exemplary embodiment of the present invention. [Main component symbol description] 1〇 background layer 12 first thick film layer 14 first film layer 10 second thick film layer 20 green wavelength absorption pattern 40 green complementary color absorption layer

41 Green Complementary Color Absorber 100 LCD 34 201013236 Polarized Film Polarized Film Transparent Substrate Transparent Electrode Liquid Crystal Molecular Power Cell Line Horizontal Oriented Pixel Line Orientation Line Horizontal Orientation Line Horizontal Orientation Vertical Orientation First Pixel Part Orientation Second Pixel Part Line Vertical Orientation Horizontal Orientation Line 201013236 412 Vertical Orientation 414 Horizontal Orientation 420 Optical Film 432 Orientation. 434 Orientation 440 Pixel 450 Line 452 Horizontal Orientation® 454 Vertical Orientation 742 Membrane Layer 744 First Thick Film Layer 746 Second Thick Film Layer 880 Light 881 Refraction Light 882 transmitted light φ 883 reflected light 884 light 885 transmitted light 887 light 888 light 889 light from the display panel R1 light 887 reflectance R2 light 888 reflectance T1 transmitted light 882 transmittance 36 201013236 T2 transmitted light 885 transmittance The refractive index nt of the η film layer 742 is the refractive index θ of the first thick film layer 744 and the second thick film layer 746. The angle of the refracted light 881 entering the film layer with respect to the normal of the interface (refraction angle) θι 880 relative to the interface The angle of the normal (incident angle) θ〇 is incident on the filter from the display panel Light angle 889 of the thin film layer thickness of 1

Claims (1)

201013236 VII. Patent application scope: 1. A filter for compensating for color shift, which is provided before a display panel of a display device, the filter comprises: a background layer; and a green wavelength absorption pattern, It has a thickness on the background layer, wherein the green wavelength absorption pattern absorbs light of a green wavelength. 2. If you apply for a patent scope! The filter of the item, wherein the green wave 'long absorption pattern comprises: a stripe having a wedge-shaped cross section, a corrugation having a wedge-shaped cross section, a matrix having a wedge-shaped cross section, and a honeycomb having a wedge-shaped cross section The structure, the stripe having a quadrilateral cross section has a quadrangular cross section corrugation, a matrix having a quadrilateral cross section, or a honeycomb structure having a quadrilateral cross section. 3. The filter of claim 1, wherein the green wavelength absorbing pattern comprises a green wavelength absorbing material that absorbs light of a green wavelength in the range of up to 560 nm. 4. The filter of claim 3, wherein the green wavelength absorbing material comprises a pink colorant that absorbs a green wavelength of light in the range of 5 l 〇 nm to 56 〇 nm. 5. The filter of claim 1, wherein the color shift Δν'/Δυ in the color coordinates is 6 相对 with respect to the front. The viewing angle is in the range of tan (-15.) to tan (45.). 6', wherein the filter of claim 1 further comprises a backing layer' which is provided on one of the surface layers to support the background layer. 7. The filter of claim j, wherein the display device 38 201013236 is configured as a liquid crystal display. Wherein the green wave 8. The filter long absorption pattern of claim 1 of the patent scope further comprises a white light absorbing material. In the case of the light absorber of the invention, the filter material of the eighth aspect of the patent application includes a black material, wherein the white light absorber 10. The filter material of the ninth application of the patent scope includes carbon black. Wherein the background layer u is the difference between the refractive index of the filter A of the first application of the patent scope, W « π j and the refractive index of the green wavelength absorption pattern, from 0.001 to 0.1 〇 12 · Apply for patent coverage! The terminator of the terminator further comprises a green complementary color absorbing portion that absorbs light of one wavelength complementary to green. 13. The filter of claim 12, wherein the green complementary color absorbing portion is a-a green complementary color absorbing layer, which is a resin layer, wherein a green complementary color absorbing material is mixed to the resin layer in. 14. The filter and optical device of claim 13, wherein the green complementary color absorbing layer comprises an adhesive layer, and the green complementary color absorbing material is mixed into the adhesive layer. 15. The filter of claim 13 </ RTI> wherein the background layer has 3, a chrome complementary color absorbing material that absorbs light of one wavelength complementary to green to cause the background layer to act as the green complementary color absorbing layer . 16. The filter and optical device of claim 12, wherein the green complementary color absorbing portion of the sentence-έ羊# ^, the long-color complementary color absorption sheet is formed in the green wavelength absorption pattern. On the side. 39. The light illuminator of claim 16, wherein the green complementary color absorbing sheet is formed on one of the back surfaces of the green wavelength absorbing pattern. 18. The filter of claim 16, wherein the green wavelength absorption pattern has a wedge-shaped cross section, and the green complementary color absorption sheet is formed on a bottom side of the wedge-shaped cross section of the green wavelength absorption pattern. . 19. The filter of claim 12, wherein the green complementary color absorbing portion comprises at least one selected from the group consisting of: a blue wavelength absorbing material absorbed at 440 „! „Light of a blue wavelength in the range of 480 nmi; and a red wavelength absorbing material that absorbs a red wavelength of light in the range of 600 nm to 650 nm. 20. The filter of claim 12, further comprising a thick film layer, a first film layer and a second thick film layer stacked on each other in the above-described order, wherein the first film layer has a thickness not exceeding 780 nm, and the first thick film layer and the second thick film layer have a thickness greater than the thickness of the first film layer, and the first thick film layer and the first film At least one of the layer and the second thick film layer is the green complementary color absorbing portion. 21. The filter of claim 3, further comprising a first thick film layer, a first film layer and a second thick film layer stacked on each other in the above-described order, wherein the first film The layer has a thickness of no more than 78 〇 nm, and the first thick film layer and the second thick ruthenium layer have a thickness greater than the thickness of the first film layer. 201013236 22. The filter of claim 21, wherein the second film layer and the third thick film layer are followed by the first thick film layer, the film layer and the second thick film layer in the above order Stacking. 23. The filter of claim 21, wherein at least one of the film layer and the second thick film layer comprises: a substrate supporting the substrate for compensating for color shifting, A front substrate, an anti-glare film, a polarizing film, a retardation film, an adhesive layer, or an air layer. ® 24. A display device comprising a filter for compensating for color shifts as claimed in the scope of the patent application. Including a first thin first layer, a display panel, and a diffusion panel