| abstract |
A reflection type liquid-crystal in which a light guidenplate is in tight contact with a liquid-crystal display elementnhaving a reflecting layer through a bonding layer with refractivenindex in a range of from 1.40 to 1.55 and whole light transmittivitynin a range of not less than 90%, the light guide plate beingndesigned so that incident light from an incidence side surfacenis emitted from a lower surface through prismatic irregularitiesnformed on an upper surface, and the light emitted from the lowernsurface takes maximum intensity in a direction at an angle of 30ndegrees or less with respect to a normal to a reference plane ofnthe lower surface, while maximum intensity of leakage light fromnthe upper surface in the direction at an angle of 30 degrees ornless is not larger than 1/5 of the maximum intensity in the lowernsurface, and incident light from the lower surface is transmittednfrom the upper surface. |