摘要
The allowable range of marginal variation of the cell gap to ensure uniform optical properties when using in-plane switching (IPS) of liquid crystals was evaluated quantitatively. As a result, the marginal variation for a uniform display using the IPS of liquid crystals was quantitatively confirmed to be much narrower than that in the twisted nematic mode. In the selected bright state, the variation was between those of the twisted and supertwisted nemafic modes, while it was comparable to the cell gap margin of the supertwisted nematic mode in the intermediate state; i.e., the variation of ±0.1 μm in the twisted nematic mode corresponded to that in a range of ±0.02 to ±0.04 μm in the IPS mode.