DISPLAYS WITH MINIMIZED LIGHT LEAKAGE

摘要

A liquid crystal display (14) is provided with transparent substrates (70, 72) that minimize light leakage in the black state. The transparent substrates (70, 72) include a thin-film transistor substrate (72) having thin-film transistors formed on it and a colour filter substrate (72) having a layer (71) of colour filter elements. The thin- film transistor substrate (72) is formed from a material having a photo-elastic constant smaller than 3.0x10-13 cm2 /dyn. The colour filter substrate is also preferably formed from a material having a photo-elastic constant smaller than 3.0x10-13 cm2 /dyn. This choice of the photo-elastic constant reduces birefringence effects arising in the thin-film transistor substrate (70) and in the colour filter substrate (72) when the display (14) experiences internal or external stresses, thus helping minimise light leakage from the display.