A color filter and a display apparatus employing the color filter are provided. The color filter includes a base substrate and a color photoresist layer disposed on the base substrate. The color photoresist layer includes a photopolymerized photosensitive composition, at least one of a pigment and a dye, and quantum dots.

Discussed is a color filter structure for converting a wavelength of light emitted from a light-emissive element. The color filter structure includes a light-conversion layer containing a first resin and quantum dots dispersed in the first resin, wherein each quantum dot has a core/shell structure. The color filter structure further includes a light-absorbing layer stacked on the light-conversion layer, wherein the light-absorbing layer contains a second resin and semiconductor nano-particles dispersed in the second resin. The semiconductor nano-particles absorb light emitted from the light-emissive element. Accordingly, the color filter structure improves color purity and luminance of the emitted light.

A wavelength conversion member includes a wavelength conversion layer that contains a phosphor, the wavelength conversion member having a face that has an arithmetic average roughness Ra of 5 μm or more and a maximum height Rz of from 30 to 250 μm.

A color filter including a first pixel (or color conversion region) that is configured to emit a first light and a display device including the color filter. The first pixel includes a (first) quantum dot composite (or a color conversion layer including the quantum dot composite), wherein the quantum dot composite may include a matrix and a plurality of quantum dots dispersed (e.g., randomly) in the matrix, wherein the plurality of the quantum dots exhibit a multi-modal distribution (e.g., a bimodal distribution) including a first peak particle size and a second peak particle size in a size analysis, wherein the second peak particle size is greater than the first peak particle size, and a difference between the first peak particle size and the second peak particle size is less than or equal to about 5 nanometers (nm) (e.g., less than or equal to about 4.5 nm).

A color filter including a first layer including first quantum dots and a second layer including second quantum dots that are different from the first quantum dots, and disposed on the first layer, wherein a quantum yield of the first quantum dots is greater than a quantum yield of the second quantum dots, and wherein an absorption of blue light of the second quantum dots is greater than an absorption of the blue light of the first quantum dots.

A method of manufacturing a color filter and a color filter are provided. The method includes steps of manufacturing a color resist layer and an inorganic barrier layer on a base substrate. The step of manufacturing the color resist layer includes sequentially forming a first color resist, a second color resist, and a third color resist, and the first color resist, the second color resist, and the third color resist are repeatedly arranged in order in a direction along a surface of the base substrate. The step of manufacturing the inorganic barrier layer includes forming a first inorganic barrier layer covering the first color resist after the first coloder resist is formed and before the second color resist is formed. By setting the inorganic barrier layer to separate different color resists, it is possible to avoid diffusion pollution between different color resists and ensure a display performance.

An optical filter, a spectrometer including the optical filter, and an electronic apparatus including the optical filter are disclosed. The optical filter includes a first reflector including a plurality of first structures that are periodically two-dimensionally arranged, each of the first structures having a ring shape, and a second reflector spaced apart from the first reflector and including a plurality of second structures that are periodically two-dimensionally arranged.

A colored structure representing a back side-reflection color with metallic luster and high chroma when observed in a substrate incident mode greatly enhances light absorbance at a specific wavelength using a resonance structure in which a light absorbing material is inserted between a transparent substrate and an upper mirror layer. The colored structure controls metallic luster and texture of a high-chroma color from gloss-semi-gloss-matte texture in various aesthetic ways including introducing a haze surface structure in which light scattering occurs on at least one surface of the transparent substrate.

The present invention proposes an optical band-pass filter with blocked sidebands. The filter comprises a photonic crystal structure based on macroporous silicon having a series of pores defined in the structure. The photonic crystal structure includes a resonator block (BR), comprising at least two periodicity groups (GR1, GR2) between which there is a resonant cavity (CR), wherein the resonant cavity (CR) is adapted to provide a resonance peak in the center of a non-transmitting frequency band of the resonator block (BR); and at least one of a high-pass block (BPA), adapted to block wavelengths below said non-transmitting frequency band; or a low-pass block (BPB), adapted to block wavelengths above said non-transmitting frequency band.

An optical wavelength conversion composite material is provided and includes a first wavelength conversion material and an inorganic covering layer. The first wavelength conversion material is selected from the group consisting of a first quantum dot, a first phosphor, and a combination thereof. The inorganic covering layer covers the first wavelength conversion material, and the inorganic covering layer includes SiO.sub.2, TiO.sub.2 and Si.sub.xTi.sub.yO.sub.4−z, wherein x is from 0.1 to 0.4, y is from 0.5 to 0.8, and z is from 0.01 to 3.99. The optical wavelength conversion composite material has improved luminous efficiency and is stable. Besides, a related manufacturing method and a related optical wavelength conversion composite structure are provided.