Color filter and liquid crystal display device using the...

G - Physics – 02 – F

Patent

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Details

G02F 1/1335 (2006.01) G02B 5/20 (2006.01)

Patent

CA 2455450

An object of the invention is to provide a color filter and a transflective liquid crystal display device using the filter, which can obtain well-balanced color purities within a pixel. A color filter for coloring a first light ray L1 having a unidirectional optical path and a second light ray L2 having a bidirectional optical path for each pixel. The color filter includes a first area portion 10t in which the first light ray L1 is caused to be transmitted and a second area portion 10r in which the second light ray L2 is caused to be transmitted, for each pixel. The first area portion 10t and the second area portion 10r respectively have structures by which different coloring effects are exerted if light rays having the same optical path and the same property pass through them.

La présente invention concerne un filtre couleurs et un afficheur transflectif utilisant ce filtre, capables de donner des puretés de couleurs bien équilibrées dans un pixel. L'invention concerne également un filtre couleurs servant à colorer un premier rayon de lumière (L1) caractérisé par un trajet optique unidirectionnel et un second rayon de lumière (L2) caractérisé par un trajet optique bidirectionnel pour chaque pixel. Le filtre couleurs inclut une première partie de zone (10t) dans laquelle le premier rayon de lumière (L1) est amené à être émis, et une seconde partie de zone (10r) dans laquelle le second rayon de lumière (L2) est amené à être émis, pour chaque pixel. La première partie de zone (10t) et la seconde partie de zone (10r) comportent, chacune en ce qui la concerne, des structures permettant d'exercer différents effets de coloration si des rayons de lumière utilisant le même trajet optique et présentant la même propriété les traversent.

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