Patent ID: 6151089
Filing Date: 2000-11-21
Classification: G02B,G02F

Abstract:
A reflection type display device, comprising:first and second substrate positioned in spaced apart relationship with a gap therebetween, the first substrate being transparent and positioned on a light incident side via which external light is introduced into the gap, the second substrate positioned on a light reflective side at which light is reflected back out of the gap;an electro-optical material held within the gap;an electrode provided on at least one of the first substrate and the second substrate, the electrode configured for effectively applying a voltage to the electro-optical material;a light source;a transparent light guide provided adjacent the first substrate but outside of the gap, the light guide plate having an upper surface facing away from the gap and comprising alternating planar sections and inclined sections, the planar sections having upper surfaces parallel to the gap, the inclined surfaces being inclined relative to the gap, the light source being provided at an end of the light guide plate, the light guide plate allowing external light to be transmitted therethrough and into the gap light reflected back from the gap to be transmitted therethrough, the inclined sections effective to reflect light from the light source and to direct the reflected light into the gap substantially at a right angle relative to the planar surface sections, the width of a planer section being at least 15 times the width of an inclined section.