Patent ID: 6147727
Filing Date: 2000-11-14
Classification: G02F

Abstract:
A reflection type liquid crystal display device, comprising:a panel comprising a transparent first substrate disposed at an external light incoming side; a second substrate opposing the first substrate, with the first substrate and the second substrate being put together so as to be separated by a predetermined distance; nematic liquid crystal kept in the gap, with the molecules thereof having a twisted orientation; and an electrode, formed at the first substrate and at the second substrate, for applying a voltage to the nematic liquid crystal;a polarizing plate disposed at the first substrate side; anda 1/4 wavelength plate disposed at the first substrate side;wherein when a voltage is applied, the orientation of the molecules of the nematic liquid crystal is changed to a substantially vertical orientation, and the nematic liquid crystal loses the ability to act as a 1/4 wavelength layer, so that the nematic liquid crystal cooperates with the polarizing plate and the 1/4 wavelength plate for blocking external light in order to generate a black display; andwherein the direction of a transmission axis of the polarizing plate is set at an angle of from 120 to 150 degrees in a clockwise direction from the direction of orientation of the portion of the nematic liquid crystal disposed at the first substrate side.