Wavelength selective absorption filter and organic electroluminescent display device

A wavelength selective absorption filter comprising:

• a resin;
• and
• the following dyes A to D each having a main absorption wavelength range in different wavelength regions,
• wherein an absorbance Ab (λ) of the wavelength selective absorption filter at a wavelength λ nm satisfies Relationships of Expressions (I) to (VI),
• dye A:
• a dye having a main absorption wavelength range at a wavelength of 425 to 435 nm in the wavelength selective absorption filter,
• dye B:
• a dye having a main absorption wavelength range at a wavelength of 480 to 520 nm in the wavelength selective absorption filter,
• dye C:
• a dye having a main absorption wavelength range at a wavelength of 580 to 620 nm in the wavelength selective absorption filter,
• dye D:
• a dye having a main absorption wavelength range at a wavelength of 680 to 780 nm in the wavelength selective absorption filter,
• Relational Expression (I) Ab (450)/Ab (430)<1.0,
• Relational Expression (II) Ab (450)/Ab (500)<1.0,
• Relational Expression (III) Ab (540)/Ab (500)<1.0,
• Relational Expression (IV) Ab (540)/Ab (600)<1.0,
• Relational Expression (V) Ab (630)/Ab (600)≤0.5, and
• Relational Expression (VI) Ab (630)/Ab (700)<1.0,
• wherein the dye B is a squarine-based coloring agent represented by General Formula (1),
• in the formula, A and B each independently represent a pyrazole ring group which may have a substituent, and wherein
• the dye C is represented by the following General Formula (3),
• in the formula, R1 and R2, and R3 and R4 each independently represents a hydrogen atom or a substituent, and B1 to B4 each independently represents a carbon atom.