Patent ID: 7106402
Filing Date: 2006-09-12
Classification: G01R

Abstract:
1. A method for driving a reflection liquid crystal display comprising: a first substrate; a second transparent substrate that is disposed forward to the light-incident direction so that it is opposed to said first substrate; a liquid crystal layer placed between said first and second substrates; a color filtering layer consisting of a cholesteric material layer secured between said first substrate and said liquid crystal layer; an optical absorbing layer provided rearward of said color filtering layer in the light-incident direction between said first substrate and said color filtering layer; and a three-prime-color cholesteric material layer having an inverted twisting compared to said cholesteric material layer of said color filtering layer, said three-prime-color cholesteric material layer being provided at a side of said second substrate forward of said second substrate in said light-incident direction wherein said display is dot invertedly driven by inverting the polarities (positive and negative) of voltage applied onto a liquid crystal layer of pixels adjacent to each other.