초록 ▼

In a projector using an optical engine that is constituted of three LCDs, the active layer thickness of TFTs constituting each LCD is optimized in accordance with the wavelength of illumination light. By making the active layer thickness smaller as the wavelength becomes shorter, leak current due to

In a projector using an optical engine that is constituted of three LCDs, the active layer thickness of TFTs constituting each LCD is optimized in accordance with the wavelength of illumination light. By making the active layer thickness smaller as the wavelength becomes shorter, leak current due to stray light is suppressed and the degrees of display failures such as crosstalk can be lowered to levels that are not problematic.

대표청구항 ▼

[What is claimed is:] [1.]each of the three liquid crystal displays has a circuit including a plurality of thin film transistors; andeach of the thin film transistors of one of said three liquid crystal displays, that is illuminated with light having a shorter wavelength than light illuminating the

[What is claimed is:] [1.]each of the three liquid crystal displays has a circuit including a plurality of thin film transistors; andeach of the thin film transistors of one of said three liquid crystal displays, that is illuminated with light having a shorter wavelength than light illuminating the other two liquid crystal displays, has at least one active layer having a thickness thinner than each active layer of the thin film transistors of the other two liquid crystal displays.