JP2005189402A - Color filter, method for manufacturing color filter, and display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the number of processes for manufacturing a color filter and to improve the chromaticity of the color filter by reducing the level difference between a reflection type portion and a transmission type portion of the color filter. <P>SOLUTION: The color filter 20 is formed by superposing color filter layers subjected to chromaticity adjustment or the color filter layers subjected to the chromaticity adjustment and having the optical properties different from each other into several layers. The color filter 20 consists of the first color filter layer 21 and the second color filter layer 22 which has the area greater than the area of the first color filter layer 21 and is arranged in the state of covering the first color filter layer 21. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a color filter having a simple and easy manufacturing process, high yield, and easy density increase, a method for manufacturing a color filter, and a display device.

  Conventionally, a case where a combined type (for example, transmission type and reflection type) color filter is actually manufactured will be described with reference to FIG.

  As shown in FIG. 10, transmissive color filters 111R, 111G, and 111B of R (red), G (green), and B (blue), which are the three primary colors of light, are placed on a transparent substrate 101 such as a glass substrate, for example, an island. To form. Next, R (red), G (green), and B (blue) reflective color filters 121R, 121G, and 121B are stacked on the transmissive color filters 111R, 111G, and 111B, and the transmissive color filters are stacked. Openings 123R, 123G, and 123B are formed in the reflective color filters 121R, 121G, and 121B on the filters 111R, 111G, and 111B. An absorptive color filter may be used in place of the reflective color filters 121R, 121G, and 121B.

  Alternatively, first, the reflective color filters 121R, 121G, and 121B of R (red), G (green), and B (blue) are formed on the substrate 101, and the reflective color filters 121R, 121G, and 121B are formed. Openings 123R, 123G, and 123B are formed in predetermined regions. R (red), G (green), and B (blue) transmissive color filters 111R, 111G, and 111B are formed so as to coincide with the openings 123R, 123G, and 123B. At that time, the chromaticity of transmission and reflection is adjusted by controlling the film thickness of the transmission type color filters 111R, 111G, and 111B (see, for example, Patent Document 1).

JP 2000-305086 A

  The problem to be solved is that it is necessary to accurately superimpose the filters arranged in the part where the opening is formed, and it takes time and effort to open, and the number of processes increases. Furthermore, the edge portion of the overlapping portion of the opening portion is not flat, and attention must be paid to the alignment accuracy and the step shape of the boundary portion. In addition, the unprocessed process of forming the opening may be overlooked, which hinders yield improvement and density increase.

  The color filter of the present invention is characterized in that the color filter layer having different optical properties adjusted in chromaticity is superposed on a plurality of layers.

  The color filter of the present invention has the most main feature that two kinds of color filter layers adjusted in chromaticity are superposed.

  The manufacturing method of the color filter of the present invention is characterized in that the color filter layers having different optical properties adjusted in chromaticity are formed by superposing them on a plurality of layers.

  The most important feature of the color filter manufacturing method of the present invention is that two types of color filter layers adjusted in chromaticity are formed in an overlapping manner.

  The display device of the present invention is characterized in that it includes a color filter formed by superimposing a plurality of color filter layers having different optical properties with chromaticity adjustment.

  The display device of the present invention is characterized by having a color filter formed by superposing two color filter layers adjusted in chromaticity.

  In the color filter of the present invention, the number of masks and the number of processes are increased because a plurality of color filter layers having different chromaticity-adjusted optical properties are superimposed on each other, or two color filter layers having chromaticity adjustments are overlapped. Therefore, there is an advantage that it is economical. In addition, there is an advantage that pattern alignment becomes easy. Furthermore, there is an advantage that the color purity of the color filter is improved. Moreover, since it is a new chromaticity adjustment method, a new optical design method can be established.

  In the method for producing a color filter of the present invention, a color filter layer with different optical properties adjusted for chromaticity is overlaid on a plurality of layers, or two types of color filter layers with adjusted chromaticity are overlaid. Therefore, since the number of masks and the number of processes can be reduced, there is an advantage that it is economical. In addition, there is an advantage that pattern alignment becomes easy. Furthermore, there is an advantage that the color purity of the color filter can be improved.

  The display device of the present invention includes a color filter formed by superimposing a plurality of color filter layers having different optical properties with chromaticity adjustment, or two superposed color filter layers with chromaticity adjustment. Since the combined color filter is provided, the color purity of the color filter is improved, so that the color reproducibility of the display image is improved.

  In addition to solving the problem of overlay accuracy when manufacturing conventional combined color filters, the purpose of flattening the laminated edge, reducing the number of steps, and improving color purity is By overlapping different color filter layers on a plurality of layers, or by overlapping two color filter layers adjusted in chromaticity, it was easily realized without increasing the number of steps.

  A first embodiment of the color filter and the color filter manufacturing method of the present invention will be described with reference to the schematic sectional view of FIG. 1 and the diagram for explaining the configuration of the color filter of FIG.

  As shown in FIG. 1, the color filter 20 is formed by superimposing a chromaticity-adjusted first color filter layer 21 and a second color filter layer 22 on the main surface of the substrate 11, and the second color filter. The layer 22 has a larger area than the first color filter layer 21 and is arranged so as to cover the first color filter layer 21. The color filter 20 having such a configuration is usually formed on the main surface of the substrate 11 for three colors of R (red), G (green), and B (blue). The substrate 11 is made of, for example, a transparent glass substrate. Alternatively, a quartz substrate or a plastic substrate can be used. In addition to a transparent substrate, a translucent substrate can also be used. In addition, the first color filter layer 21 and the second color filter layer 22 may have the same or different optical properties adjusted in chromaticity. Here, the following description will be made assuming that the first color filter layer 21 and the second color filter layer 22 have the same optical properties with chromaticity adjustment.

  The first color filter layer 21 is a transmissive color filter layer, and the second color filter layer 22 is a reflective color filter layer. The second color filter layer 22 may be an absorptive color filter layer. That is, the first color filter layer 21 has a property of transmitting one of the wavelength components of the three primary colors [R (red), G (green), B (blue)] of light, and is arranged in a plane. A transmissive color filter layer. The second color filter layer 22 has a property of reflecting one of the wavelength components of the three primary colors of the light, and is a reflective color filter layer arranged in a plane or the wavelength component of the three primary colors of the light. It is an absorption type color filter layer having a property of absorbing one of the colors and arranged in a plane.

  Hereinafter, it will be described in detail with reference to FIG. In the description of FIG. 2, a three-color resist of cyan (C), yellow (Y), and magenta (M) is used, the reflective portion is subtractive color mixture (CYM1 layer configuration), and the transmissive portion is additive color mixture (CMY is a different color). RGB structure with two layers).

  FIG. 2 shows a method for manufacturing a color filter of a pixel portion in a liquid crystal display device (LCD) of the combined reflection / transmission type according to the first embodiment. In the manufacturing method of the present invention, the conventional method is used. The second color filter layer 22 as the reflective color filter layer is laminated on the first color filter layer 21 as the transmissive color filter layer without forming an opening in the reflective color filter layer. A color filter 20 having a laminated structure is formed.

  Here, the configuration of a color filter according to a conventional manufacturing technique will be described with reference to FIG. As shown in FIG. 3, the color filter 320 has a reflective type so as to cover the first color filter layer 321 after forming a first color filter layer 321 made of a transmissive color filter layer on the main surface of the substrate 311. A second color filter layer 322 made of a color filter layer is formed. Thereafter, an opening 323 is formed in the second color filter layer 322 on the first color filter layer 321 to expose the first color filter layer 321. The step of forming the opening 323 is based on a normal lithography technique and an etching technique. The color filter 320 having such a configuration is generally formed on the main surface of the substrate 311 for three colors of R (red), G (green), and B (blue).

  Therefore, the color filter manufacturing method of the present invention does not need to perform the step of forming the opening 323 in which the transmissive color filter layer is exposed and disposed on the reflective color filter layer as compared with the conventional manufacturing method. I understand. A feature of the configuration of the color filter in the prior art is that it does not have a laminated structure like the configuration of the color filter of the present invention. In addition, the reflective color filter layer does not become flat at the edge portion where the two types of color filters (the reflective color filter and the transmissive color filter) are in contact, and has an inverted caldera shape. On the other hand, in the color filter of the present invention, two types of color filters (reflective color filter and transmissive color filter) having different areas are partially stacked, and the edge of the reflective color filter is conventionally provided. It can be seen that the structure is flattened as compared with the configuration of the technique. In this case, at the boundary surface between the glass and the color filter, a part of the joint surface of the stacked color filters is necessarily arranged in a planar shape so as to be in contact with the main surface of the substrate 11.

  In the color filter of the present invention, the first color filter layer 21 may be a transmissive color filter layer, and the second color filter layer 22 may be a reflective color filter layer.

  Next, the chromaticity characteristics of the transmission part in the color filter of the present invention described with reference to FIG. 1 and the color filter of the conventional structure described with reference to FIG. 3 were compared. The results are shown in Table 1.

  The symbol R in Table 1 represents red of the three primary colors of light, the symbol G represents green of the three primary colors of light, the symbol B represents blue of the three primary colors of light, and the numerical values described in the Spin conditions are the solvent of the color filter Represents the number of revolutions (rpm.) When spin-coating, Y of the measured value represents brightness, and x and y represent the color coordinates of the “CIE 1931 chromaticity diagram”.

  Next, based on Table 1, color filter (R, G, B) chromaticity triangles are shown in FIG. As apparent from FIG. 4, the area of the R, G, B triangle is larger in the color filter of the present invention than in the conventional color filter. Therefore, it can be seen that the color filter of the present invention has improved chromaticity as compared with the color filter of the conventional structure.

  Next, chromaticity adjustment will be described. The main conditions for determining the chromaticity are the concentration of the pigment contained in the color resist, the type of pigment (spectrum), and the thickness of the color resist. The concentration of the pigment is 50% or less including at least the pigment. Examples of the pigment type (spectrum) include pigment red (Pigment Red 177), pigment green (Pigment Green 36), and pigment blue (Pigment Blue 15: 6 etc). The film thickness of the color resist was 0.3 μm or more and 3.0 μm.

  The color resist is generally composed of a pigment, a dispersant, a binder resin, a monomer, a photopolymerization initiator, and a solvent. Broadly speaking, the resist performance is determined by the binder resin, the monomer, and the photopolymerization initiator, and the chromaticity performance is determined by the pigment and the dispersion material.

  It is necessary to adjust the chromaticity of the color resist while maintaining resist performance such as pattern linearity, adhesion, and residue characteristics. However, when the pigment concentration exceeds 50%, it becomes impossible to sufficiently contain a binder resin, a monomer, a photopolymerization initiator, and the like, which are components that form resist characteristics other than the pigment, and the characteristics of the color resist are significantly reduced. However, it does not hold true as a color resist.

  Further, factors that determine color reproduction and transmittance include matching between the peak position of the spectral transmittance of each pigment, the color matching function, and the backlight spectral spectrum to be used. Therefore, the pigment is selected based on the desired hue and the emission spectrum of the light source. At this time, not only a single type of pigment but also a plurality of types can be prepared. The film thickness of the color resist is determined from the viscosity, apparatus performance, and resist characteristics. The formation limit film thickness is determined from the viscosity and the apparatus performance, and further, the actual use film thickness is limited by the resist characteristics. Finally, the range is 0.3 μm or more and 3.0 μm or less. After the color resist is selected, the film thickness is adjusted by adjusting the film thickness, and in practice by adjusting the apparatus conditions, and the desired color reproducibility and transmittance are controlled.

  Next, a second embodiment of the color filter and the color filter manufacturing method of the present invention will be described with reference to a schematic sectional view of FIG. 5 and a diagram for explaining the configuration of the color filter of FIG. The first color filter layer 31 and the second color filter layer 32 of the color filter described here are made of different optical properties whose chromaticity is adjusted.

  As shown in FIG. 5, the color filter 30 is formed by superimposing a chromaticity-adjusted first color filter layer 31 and a second color filter layer 32 on the main surface of the substrate 11, and the second color filter. The layer 32 has a larger area than the first color filter layer 31 and is arranged so as to cover the first color filter layer 31. The color filter 30 having such a configuration is usually formed on the main surface of the substrate 11 for three colors of R (red), G (green), and B (blue). The substrate 11 is made of, for example, a transparent glass substrate. Alternatively, a quartz substrate or a plastic substrate can be used. In addition to a transparent substrate, a translucent substrate can also be used. In addition, the first color filter layer 31 and the second color filter layer 32 may have the same or different optical properties adjusted in chromaticity. Here, the following explanation will be made assuming that the first color filter layer 31 and the second color filter layer 32 have different chromaticity-adjusted optical properties.

  The first color filter layer 31 is a transmissive color filter layer, and the second color filter layer 32 is a reflective color filter layer. The second color filter layer 32 may be an absorptive color filter layer. That is, the first color filter layer 31 has a property of transmitting one of the wavelength components of the three primary colors [R (red), G (green), B (blue)] of light, and is arranged in a plane. A transmissive color filter layer. The second color filter layer 32 has a property of reflecting one of the wavelength components of the three primary colors of the light, and is a reflective color filter layer arranged in a plane or the wavelength component of the three primary colors of the light. It is an absorption type color filter layer having a property of absorbing one of the colors and arranged in a plane.

  Hereinafter, it will be described in detail with reference to FIG. In the description of FIG. 6, a three-color resist of cyan (C), yellow (Y), and magenta (M) is used, the reflective portion is subtractive color mixture (CYM1 layer configuration), and the transmissive portion is additive color mixture (CMY is a different color). RGB structure with two layers).

  FIG. 6 shows a method of manufacturing a color filter of a pixel portion in a liquid crystal display device (LCD) of the combined reflection / transmission type according to the second embodiment. In the manufacturing method of the present invention, the conventional method is used. The second color filter layer 32, which is a reflective color filter layer, is laminated on the first color filter layer 31, which is a transmissive color filter layer, without forming openings in the reflective color filter layer. A color filter 30 having a laminated structure is formed.

  Therefore, the manufacturing method of the color filter of the present invention includes the step of forming the opening 323 for arranging the reflective color filter layer so that the transmissive color filter layer is exposed as compared with the conventional manufacturing method described with reference to FIG. You can see that there is no need to do it. A feature of the configuration of the color filter in the prior art is that it does not have a laminated structure like the configuration of the color filter of the present invention. In addition, the reflective color filter layer does not become flat at the edge portion where the two types of color filters (the reflective color filter and the transmissive color filter) are in contact, and has an inverted caldera shape. On the other hand, in the color filter of the present invention, two types of color filters (reflective color filter and transmissive color filter) having different areas are partially stacked, and the edge of the reflective color filter is conventionally provided. It can be seen that the structure is flattened as compared with the configuration of the technique. In this case, at the boundary surface between the glass and the color filter, a part of the joint surface of the stacked color filters is necessarily arranged so as to be in contact with the main surface of the substrate 11 in a planar shape.

  In the above description, the first color filter layer 31 is a transmissive color filter layer and the second color filter layer 32 is a reflective color filter layer. However, if the optical properties are different, the selection of the color filter type is as described above. It is not limited. Further, the laminate of color filter layers is not limited to a laminate of two types of color filter layers, and a plurality of laminates may be used as long as the color filter layers have different optical properties. The overall optical characteristics of the laminated color filter layers are controlled by the transmittance, reflectance, absorptivity, film thickness, and the like of each color filter layer.

  In the first and second embodiments, in the case of a liquid crystal panel including a reflective portion made of a reflective color filter layer and a transmissive portion made of a transmissive color filter layer, the reflective color filter layer and the reflective color filter layer Thus, it is possible to form a transmission portion having a structure in which the reflective color filter layer is formed at the same time.

  Further, in the second embodiment, by adopting an overlapping structure of different material layers, it is possible to perform chromaticity adjustment that cannot be adjusted only by adjusting the film thickness of the same material. For example, in R (red), it is possible to reduce the y value in the same x value region by overlapping different material layers. In G (green), it is possible to reduce the x value in the same y value region by overlapping different material layers. In both R (red) and G (green), this chromaticity change direction provides an effect of improving color purity.

  For reference, FIGS. 7A and 7B show the spectral spectra of the color resist of R (red). In any of the drawings, the vertical axis indicates the light intensity, and the horizontal axis indicates the wavelength. (1) The figure shows the spectral spectrum of the material a of R (red), the spectral spectrum of the material b of R (red), and the spectral spectrum when the material a and the material b are superimposed. FIG. 2B shows the spectrum of the G (green) material a, the spectrum of the G (green) material b, and the spectrum when the material a and the material b are superimposed.

  Further, FIGS. 8A and 8B show the chromaticity / film thickness dependence of the color resist. In any of the drawings, the vertical axis represents chromaticity y, and the horizontal axis represents chromaticity x. (1) The figure shows the case where only the color resist of the material a of R (red) is overlapped with the color resist of the material a of R (red) and the color resist of the material b. Are the case where only the color resist of the G (green) material a is used and the case where the color resist of the G (green) material a and the color resist of the material b are overlapped.

  Next, a third embodiment of the color filter and the method for manufacturing the color filter of the present invention will be described with reference to the schematic configuration cross-sectional views of FIGS. The first color filter layer 21, the second color filter layer 22, and the third color filter layer 23 of the color filter described here are made of materials having different chromaticity-adjusted optical properties.

  As shown in FIG. 9A, the color filter 50-1 has a chromaticity-adjusted first color filter layer 51, second color filter layer 52, and third color filter layer 53 on the main surface of the substrate 11. For example, the first color filter layer 51 is made of, for example, a reflective R (red) color filter layer, and the second color filter layer 52 is made of, for example, a transmissive R (red). The third color filter layer 53 is made of, for example, a reflective B (blue) color filter layer. That is, the reflective color filter is composed of the first color filter layer 51, and the transmissive color filter is composed of the first color filter layer 51 to the third color filter layer 53. Accordingly, the first color filter layer 51 has a larger area than the second and third color filter layers 52 and 53.

  As shown in FIG. 9 (2), the color filter 50-2 includes a second color filter layer 52, a third color filter layer 53, and a first color filter layer 51 that are adjusted in chromaticity on the main surface of the substrate 11. For example, the second color filter layer 52 is made of, for example, a transmissive R (red) color filter layer, and the third color filter layer 53 is made of, for example, a reflective B (blue). The first color filter layer 51 is made of, for example, a reflective R (red) color filter layer. That is, the reflective color filter is composed of the first color filter layer 51, and the transmissive color filter is composed of the first color filter layer 51 to the third color filter layer 53. Accordingly, the first color filter layer 51 has a larger area than the second and third color filter layers 52 and 53.

  As shown in FIG. 9 (3), the color filter 50-3 has a chromaticity-adjusted second color filter layer 52, third color filter layer 53, and first color filter layer 51 on the main surface of the substrate 11. For example, the second color filter layer 52 is made of, for example, a transmission type R (red) color filter layer, and the first color filter layer 51 is made of, for example, a reflection type R (red). The third color filter layer 53 is made of, for example, a reflective B (blue) color filter layer. That is, the reflective color filter is composed of the first color filter layer 51, and the transmissive color filter is composed of the first color filter layer 51 to the third color filter layer 53. Accordingly, the first color filter layer 51 has a larger area than the second and third color filter layers 52 and 53.

  In the third embodiment, basically the same effect as the chromaticity adjustment described in the second embodiment can be obtained. By adopting a multilayer stacked structure of optically different kinds of different material layers, it is possible to adjust the chromaticity over a wide range of three layers or more. For example, by adding B (blue) of the reflection part in addition to R (red) of the reflection part and R (red) of the transmission part, the chromaticity is adjusted to the blueness side (direction in which the x value and the y value are reduced). The range of colors that can be selected is widened. Note that there is no particular feature depending on the stacking order.

  The display device of the present invention includes the color filter of the present invention, and includes, for example, a color filter formed by superimposing a plurality of color filter layers having different optical properties adjusted in chromaticity. For example, the color filter includes a first color filter layer 21 and a second color filter layer 22 having a larger area than the first color filter layer 21 and arranged to cover the first color filter layer 21. Is. Alternatively, for example, a color filter formed by superposing two color filter layers adjusted in chromaticity is provided. For example, the color filter includes a first color filter layer 31 and a first color filter layer 31. The second color filter layer 32 has a larger area and is disposed so as to cover the first color filter layer 31.

  The color filter, the method for manufacturing the color filter, and the display device of the present invention can be applied to a laminate of spontaneous emission thin films other than the color filter.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic sectional view showing a first embodiment according to a color filter and a method for producing a color filter of the present invention. 1 is a diagram illustrating a color filter and a color filter manufacturing method according to a first embodiment of the present invention. It is schematic structure sectional drawing which shows the structure of the color filter by the conventional manufacturing technique. 2 is a drawing showing color filter (R, G, B) chromaticity triangles based on Table 1. It is schematic structure sectional drawing which shows 2nd Example which concerns on the manufacturing method of the color filter of this invention, and a color filter. 6 is a diagram illustrating a color filter and a second embodiment of the color filter manufacturing method according to the present invention. It is a figure which shows an example of the spectral spectrum of the color resist of R (red) and G (green). It is drawing which shows the chromaticity and film thickness dependence of the color resist of R (red) and G (green). It is schematic structure sectional drawing which shows 2nd Example which concerns on the manufacturing method of the color filter of this invention, and a color filter. 6 is a diagram illustrating a case where a conventional combined type (for example, transmission type and reflection type) color filter is manufactured.

Explanation of symbols

  20 ... Color filter, 21 ... First color filter layer, 22 ... Second color filter layer

Claims (18)

A color filter comprising a plurality of layers of color filter layers having different optical properties with chromaticity adjustments. A color filter formed by superimposing a plurality of color filter layers having different optical properties adjusted for chromaticity on a plurality of layers,
A first color filter layer;
The color filter according to claim 1, further comprising a second color filter layer having an area larger than that of the first color filter layer and disposed so as to cover the first color filter layer. The color filter according to claim 1, wherein at least a part of the color filter layer constituting the color filter is in contact with a transparent substrate or a translucent substrate. The first color filter layer comprises a transmissive color filter layer;
The color filter according to claim 2, wherein the second color filter layer is formed of a reflective color filter layer or an absorption color filter layer. The first color filter layer has a property of transmitting a wavelength component of one of the three primary color wavelength components of light, and is a transmissive color filter layer arranged in a plane.
The second color filter layer has a property of reflecting a wavelength component of one of the three primary colors of the light, and is a reflective color filter layer arranged in a plane, The color filter according to claim 2, wherein the color filter layer has a property of absorbing a wavelength component of one color and is arranged in a plane. A color filter characterized in that two types of color filter layers adjusted in chromaticity are superimposed. The color filter formed by superimposing the two types of color filter layers adjusted for chromaticity,
A first color filter layer;
The color filter according to claim 6, further comprising a second color filter layer having a larger area than the first color filter layer and disposed so as to cover the first color filter layer. The color filter according to claim 6, wherein at least a part of the color filter layer constituting the color filter is in contact with a transparent substrate or a semi-transparent substrate. The first color filter layer comprises a transmissive color filter layer;
The color filter according to claim 7, wherein the second color filter layer comprises a reflective color filter layer or an absorption color filter layer. The first color filter layer has a property of transmitting a wavelength component of one of the three primary color wavelength components of light, and is a transmissive color filter layer arranged in a plane.
The second color filter layer has a property of reflecting a wavelength component of one color among the three primary color wavelength components of the light. The color filter according to claim 7, wherein the color filter layer has a property of absorbing a single color wavelength component and is an absorptive color filter layer arranged in a plane. A method for producing a color filter, comprising: forming a plurality of color filter layers having different optical properties, the chromaticity of which is adjusted, overlapping each other. A color filter formed by superimposing a plurality of color filter layers having different optical properties adjusted for chromaticity on a plurality of layers,
Forming a first color filter layer;
The color filter according to claim 11, further comprising: forming a second color filter layer having a larger area than the first color filter layer and arranged to cover the first color filter layer. Manufacturing method. A method for producing a color filter, characterized in that two types of color filter layers adjusted in chromaticity are overlaid. The color filter formed by superimposing the two types of color filter layers adjusted in chromaticity is:
Forming a first color filter layer;
14. The method according to claim 13, further comprising: forming a second color filter layer having an area larger than that of the first color filter layer and disposed so as to cover the first color filter layer. A method for manufacturing a filter. A display device comprising a color filter formed by superimposing a plurality of color filter layers having different optical properties with chromaticity adjustment. The color filter is
A first color filter layer;
The display device according to claim 15, further comprising: a second color filter layer having a larger area than the first color filter layer and disposed so as to cover the first color filter layer. A display device comprising a color filter formed by superposing two color filter layers adjusted in chromaticity. The color filter is
A first color filter layer;
The display device according to claim 17, further comprising: a second color filter layer having a larger area than the first color filter layer and disposed so as to cover the first color filter layer.

Images