Patent ID: 6323919
Filing Date: 2001-11-27
Classification: G02B,G02F

Abstract:
A reflection type display comprising:a panel with a display area which comprises a first transparent substrate arranged to face external incident lights, a second substrate opposing to and coupled with said first substrate through a gap therebetween, electro-optical material retained in the gap, and electrodes formed on at least one of said first and second substrates in order to apply electric field to said electro-optical material, wherein said electrodes form pixels arranged repeatedly in the first direction with a first pitch;a light guide plate disposed outside of said first substrate on the light incident side, comprising a light incident portion to which the lights are introduced, and a pair of major surfaces including a planar surface facing to said first substrate and a prismatic surface on other side, said prismatic surface comprising pseudo-planar surfaces which are formed at an angle of approximately 0.5 to 3.5 degrees with said planar surface and which are raised greater as being distanced away from said light incident portion and slanted surfaces which are formed at an angle of approximately 40 to 60 degrees with said planar surface and which are descended greater as being distanced away from said light incident portion, and wherein said pseudo-planar surfaces and said slanted surfaces are arranged alternately to form multiple prisms arranged repeatedly at a second pitch which is different from said first pitch; anda combination of a linear polarizing plate and a quarter wavelength plate disposed on said planar surface of said light guide plate.