当代显示技术 第一章(7)

当代显示技术 第一章

LCD operates by polarization manipulation of light using

electrical pulses. Polarization change => brightness changes.The effect of the applied voltage is first felt by the LC

molecules, which rotate and align themselves in the electricfield. This alignment change will then affect the optical

properties and the polarization of the light passing through it.

Common model of a TN display:

We shall see that this picture is slightly inaccurate later!

Need to understand several things for the basic operation ofLCD:

1. What is liquid crystal?

Phase transition