Microdroplets of red photoresist inkjet printed onto commercial black matrix glasses

In this Letter some new experimental results of thin-film production of colour filters (CFs) used as key microcomponents of the current liquid crystal displays (LCDs) are reported. By applying a commercial black matrix (BM) glass and a red photoresist as the conventional CFs bear, fine colour pixels (each area ~400×130 μm², average thickness less than 1 μm) were directly deposited onto BM glasses via inkjet printing processes. No material etching was required in this study. The film-patterning process presented here is expected to be fully compatible with the materials currently applied in LCD industry, thus largely reducing the costly consumption of material and time for commercial production.