Patent ID: 6618102
Filing Date: 2003-09-09
Classification: G02F,G09G

Abstract:
A display element comprising:three or more display layers each including cholesteric liquid crystal, the display layers selectively reflecting lights of different peak wavelengths, respectively, being stacked within one pixel, and having a threshold voltage of orientation change of the cholesteric liquid crystals differing from each other for voltage applied from the outside of the display layers, each display layer having a threshold voltage Vpf of change from a planar state to a focal conic state and a threshold voltage Vfh of change from a focal conic state to a homeotropic state, wherein, between a display layer having a greatest threshold voltage Vpf and a display layer having a smallest threshold voltage Vfh, the greatest threshold voltage Vpf crosses over the smallest threshold voltage Vfh such that the threshold voltage Vpf is greater than the threshold voltage Vfh.