Method for manufacturing color filter substrate

A method for manufacturing a color filter substrate comprising a base substrate, a black matrix layer, and a plurality of color pixel units, and the color pixel unit comprising a red sub-pixel unit, a green sub-pixel unit, a blue sub-pixel unit and a yellow sub-pixel unit, wherein the method for manufacturing the color filter substrate comprises:

• providing a base substrate;
• and
• forming a black matrix layer and the plurality of color pixel units on the base substrate, wherein the step of forming of the plurality of color pixel units comprises:
• depositing an irreversible temperature-change material on the base substrate;
• and
• forming at least two yellow sub-pixel units with irreversible temperature-change material in each of the color pixel units, and heating one of the yellow sub-pixel units to obtain a green sub-pixel unit.