The invention discloses a dimming glass based on a
subtractive color mixing method, which comprises two light-transmitting substrates arranged oppositely, and an adjustment area is formed between the two light-transmission substrates. The adjustment area is filled with a
liquid crystal mixture, and the
liquid crystal mixture includes a Photopolymerized
liquid crystal monomers, dichroic dyes, ordinary dyes, photoinitiators and negative liquid crystals. When no
voltage is applied, the negative liquid crystals are arranged in a single domain perpendicular to the light-transmitting substrate, and the
dichroic dye molecules are also Perpendicular to the light-transmitting substrate, the
dichroic dye absorbs the weakest light and presents a colorless state, at which time the light
transmittance reaches the highest; when a
voltage is applied, the negative liquid
crystal turns to a direction parallel to the light-transmitting substrate, turning During the process, the
dichroic dye is driven to rotate. Because of the irregular distribution of the
polymer network, the negative liquid
crystal turns into a multi-domain arrangement parallel to the light-transmitting substrate, which makes the switchable glass change from the light-transmitting state to the light-scattering state. According to the method of
subtractive color mixing, the glass presents a
colored fuzzy state.