Color filter array having color filters, and image sensor and display device including the color filter array

An image sensor comprising:

• a light sensing layer comprising an array of a plurality of pixels arranged two-dimensionally, the plurality of pixels comprising a first pixel configured to detect light of a first wavelength range and a second pixel configured to detect light of a second wavelength range, different from the first wavelength range;
• a color filter array disposed on the light sensing layer, the color filter array comprising a plurality of color filters arranged two-dimensionally, the plurality of color filters comprising a first color filter facing the first pixel and configured to transmit the light of the first wavelength range and a second color filter facing the second pixel and configured to transmit the light of the second wavelength range;
• a transparent spacer layer disposed on the color filter array;
• and
• a plurality of color separation elements disposed in the transparent spacer layer, the plurality of color separation elements configured to direct the light of the first wavelength range toward the first pixel and to direct the light of the second wavelength range toward the second pixel,
• wherein each of the first color filter and the second color filter comprises at least one particle configured to scatter light incident thereon and a transparent dielectric surrounding the at least one particle,
• wherein the color filter array comprises an isolation wall arranged between the first color filter and the second color filter and configured to prevent interactions between particles of the first color filter and particles of the second color filter.