Reflection liquid crystal display device having slanted parts in interfaces

A projection liquid crystal display device comprising:

• a reflection liquid crystal display device;
• and
• a projection lens provided in an optical path of a light emitted from said reflection liquid crystal display device,
• wherein:
• said reflection liquid crystal display device comprises:
• a liquid crystal layer;
• a first transparent insulating layer provided between said liquid crystal layer and a first substrate, the first transparent insulating layer having a refractive index substantially equal to one of refractive indexes for ordinary ray and for extraordinary ray of said liquid crystal layer;
• a second transparent insulating layer provided between said liquid crystal layer and a second substrate at a side away from said first transparent insulating layer, the second transparent insulating layer having a refractive index substantially equal to one of refractive indexes for ordinary ray and for extraordinary ray of said liquid crystal layer;
• a reflector provided between said second transparent insulating layer and said second substrate for reflecting the light passed through said second transparent insulating layer;
• a first interface formed between said liquid crystal layer and said first transparent insulating layer having a plurality of first slant parts of substantially the same shape;
• and
• a second interface formed between said liquid crystal layer and said second transparent insulating layer having a plurality of second slant parts of substantially the same shape;
• wherein each of said first slanted parts forms a slope opposite to a slope formed by a corresponding second slanted part.