Dyeing devices of color filter

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The device reduces the variation of density and pH to suppress an evaporation, and improves productivity. The device includes an over head layer (21) to prevent evaporation of dye in the upper of a dyeing vessel, an nozzle hole (20) in an over head layer (21), and heater (23) in a pipeline (22) which supplies a pure water. A 1st room (12) contains a dyeing quantity sensor (24) and 2nd room (13) contains a level sensor (25), pH detector (26) and temperature sensor (27). The device extends an exchange time of dye, and efficiently manufactures a high quality color filter for stable dyeing.

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