JP2012013757A5 - - Google Patents

Claims (8)

A color filter having at least a red filter segment, a green filter segment, and a blue filter segment on a substrate,
The blue filter segment contains a salt-forming compound (A) obtained by reacting a compound (a) having a cationic group with a xanthene-based acidic dye, a colorant containing a blue pigment, and a binder resin. A color filter for an organic EL display device, which is formed from a composition.   2. The color filter for an organic EL display device according to claim 1, wherein the content of the effective pigment component in the salt-forming compound (A) is 5 to 150 parts by weight with respect to 100 parts by weight of the blue pigment. The compound (a) having a cationic group is a resin (a1) having a cationic group in the side chain and / or a quaternary ammonium salt compound (a2) represented by the following general formula (1): The color filter for organic EL display devices according to claim 1 or 2.
General formula (1)

[In the general formula _(1), R 1 ~R ₄ independently represent an alkyl group or a benzyl group. Y ^- is representative of an inorganic or organic anion. ] A peak wavelength (λ ₁ ) having a spectral characteristic having two or more maximum values in a wavelength range of 400 nm to 700 nm, and having a maximum emission intensity in a wavelength range of 430 nm to 485 nm and a wavelength range of 580 nm to 620 nm; (lambda ₂₎ have each have an emission spectrum ratio of the emission intensity _{I 2} in the light-emitting intensity _{I 1} and the wavelength lambda ₂ at a wavelength lambda _{1 (I} 2 / _{I 1)} is 0.4 to 0.9 in the case of using a white light-emitting organic EL device, the chromaticity points in the CIE colorimetric system (xB, yB) is xB ≦ 0.160, to any one of claims 1-3, characterized in that satisfy yB ≦ 0.100 Item 1. A color filter for an organic EL display device according to item 1. A peak wavelength (λ ₁ ) having a spectral characteristic having two or more maximum values in a wavelength range of 400 nm to 700 nm, and having a maximum emission intensity in a wavelength range of 430 nm to 485 nm and a wavelength range of 580 nm to 620 nm; (lambda ₂₎ have respective, having the spectral characteristic ratio of the emission intensity _{I 2} in the light-emitting intensity _{I 1} and the wavelength lambda ₂ at a wavelength lambda _{1 (I} 2 / _{I 1)} is 0.4 to 0.9 When a white light emitting organic EL element is used, the chromaticity points in the CIE color system of the red filter segment, the green filter segment, and the blue filter segment are respectively (xR, yR), (xG, yG), (xB, yB). ), The area of the triangle surrounded by these three points on the xy chromaticity diagram is red (0.67, 0.33), green (0.21, 0.71), blue (0 . The organic EL display device for color filter according to any one of claims 1-4, characterized in that at least 85% of the area surrounded by 4,0.08). The red filter segment is C.I. I. Pigment red 177 and C.I. I. The color filter for organic EL display devices according to any one of claims 1 to 5, comprising at least one pigment selected from CI Pigment Red 179. The green filter segment is C.I. I. Pigment green 7, C.I. I. Pigment green 36, and C.I. I. At least one green pigment selected from CI Pigment Green 58; I. Pigment yellow 139, C.I. I. Pigment yellow 150, and C.I. I. At least one organic EL display device for color filter according to any one of claims 1-6, characterized by containing a yellow pigment selected from Pigment Yellow 185. A color display device comprising: the color filter according to any one of claims 1 to 7 ; and a light emitting device having a white light emitting organic EL element as a light source.