Reflection type liquid crystal display with selective reflecting means
First Claim
1. A reflection type liquid crystal display (LCD) having a cell made up of a pair of spaced light transmitting substrates each having transparent electrodes on an inner surface thereof, and a dispersion layer of liquid crystals held between said pair of substrates, and using a phenomenon that said dispersion layer turns to a transmitting state when applied with a voltage or to a scattering state when not applied with a voltage, said LCD comprising:
- at least one of selective light reflecting means and selective light diffusing means having angle selectivity and provided on a rear of said dispersion layer with respect to a viewer for transmitting light incident thereto from a viewer'"'"'s side at angles lying in a particular range and reflecting and scattering, respectively, light incident at angles lying in the other range; and
light absorbing means provided on a rear of said at least one of said selective light reflecting means and said selective light diffusing means for absorbing incident light.
1 Assignment
0 Petitions
Accused Products
Abstract
A reflection type liquid crystal display (LCD) made up of polymer dispersion type display elements each having a liquid crystal dispersion film in which liquid crystals are dispersed in a tridimensional microstructure implemented by a polymer or similar resin. Selective light reflecting or diffusing means introduces forwardly scattered light components from scattering pixels again into a liquid crystal layer without effecting non-scattering pixels. Hence, high reflection intensity and, therefore, high contrast is achieved. A light source unit is positioned such that at least a part of illumination light is reflected in the reflection angle range of the selective reflecting means. Hence, forward scattering with high scattered light intensity can be used, insuring extremely light white display.
58 Citations
18 Claims
-
1. A reflection type liquid crystal display (LCD) having a cell made up of a pair of spaced light transmitting substrates each having transparent electrodes on an inner surface thereof, and a dispersion layer of liquid crystals held between said pair of substrates, and using a phenomenon that said dispersion layer turns to a transmitting state when applied with a voltage or to a scattering state when not applied with a voltage, said LCD comprising:
-
at least one of selective light reflecting means and selective light diffusing means having angle selectivity and provided on a rear of said dispersion layer with respect to a viewer for transmitting light incident thereto from a viewer'"'"'s side at angles lying in a particular range and reflecting and scattering, respectively, light incident at angles lying in the other range; and light absorbing means provided on a rear of said at least one of said selective light reflecting means and said selective light diffusing means for absorbing incident light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification