Method for producing a reflection liquid crystal display
View Patent ↗A reflection liquid crystal display is such that a transparent substrate is opposed to the first substrate with a liquid crystal layer placed therebetween, and the transparent substrate is disposed forward to the first substrate in the light-incident direction. A quarter-wavelength plate is disposed in the transparent substrate, and a polarization plate is disposed on the surface at the forward side thereof in the light-incident direction. And, a reflection layer besides acting as a color filter consisting of a cholesteric liquid crystal is disposed inside liquid crystal cells of the first substrate. In the case of a wide field-of-view angle, a scattering film is disposed forward to the polarization plate in the light-incident direction.
1. A method for producing a reflection liquid crystal display, comprising the steps of:
forming a thin-film transistor on a first side of a first substrate;
forming an optical absorbing layer on said first side of said first substrate, said optical absorbing layer not reflecting any light;
forming a color filtering layer consisting of a cholesteric material layer on said optical absorbing layer;
forming a pixel electrode on said color filtering layer and connecting the same to said thin-film transistor;
forming a common electrode on a second substrate;
making said pixel electrode of said first substrate opposite to said common electrode of said second substrate, and forming a liquid crystal layer including a macromolecular organic compound between said first substrate and second substrate;
forming a quarter-wavelength plate on said second substrate; and
forming a polarization plate on said quarter-wavelength plate,
wherein the step of forming said liquid crystal layer further includes the steps of:
pouring liquid crystal including monomer or oligomer between said first substrate and said second substrate; and
making said monomer or oligomer macromolecular in liquid crystal.
2. The method for producing a reflection liquid crystal display as set forth in claim 1 , further comprising the step of forming a pre-tilt angle at liquid crystal molecules of said liquid crystal layer by irradiation of light after the step of forming said liquid crystal layer.
3. The method for producing a reflection liquid crystal display as set forth in claim 2 , wherein said irradiation of light is diagonally carried out with at least any one of said first substrate and second substrate.
4. The method for producing a reflection liquid crystal display as set forth in claim 2 , wherein said irradiation of light is diagonally carried out with polarized light for said first and second substrates.
5. The method for producing a reflection liquid crystal display as set forth in claim 2 , wherein said irradiation of light is carried out with polarized light for said first and second substrates from the perpendicular direction.