US 12,449,576 B2
Color display device and color filter array substrate
Ching-Huan Liao, Hsinchu (TW); Yi-Yu Tsai, Hsinchu (TW); and Hsin-Tao Huang, Hsinchu (TW)
Assigned to E Ink Holdings Inc., Hsinchu (TW)
Filed by E Ink Holdings Inc., Hsinchu (TW)
Filed on Sep. 22, 2022, as Appl. No. 17/951,028.
Claims priority of application No. 110147082 (TW), filed on Dec. 16, 2021.
Prior Publication US 2023/0194761 A1, Jun. 22, 2023
Int. Cl. G02B 5/20 (2006.01); G02F 1/167 (2019.01)
CPC G02B 5/201 (2013.01) [G02F 1/167 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A color display device, comprising:
a substrate;
a pixel structure disposed on the substrate and comprising a plurality of pixel sub-structures;
a color filter array formed by a plurality of color materials of different colors, wherein the color filter array is disposed above the pixel structure and comprises a plurality of filter elements, each of the filter elements corresponds to one of the pixel sub-structures, and at least some of the filter elements are formed by two kinds of the color materials of different colors; and
a display medium layer disposed on the pixel structure,
wherein, the color materials of different colors at least comprise one of a first color material, a second color material, and a third color material, when a wavelength of visible light is a first wavelength, transmittance of visible light in the first colored material is 50%, and the first wavelength is less than or equal to 530 nm.