Patent ID: 6628352
Filing Date: 2003-09-30
Classification: G02B,G02F

Abstract:
A liquid crystal display apparatus comprising:an illumination section having a light source and an optical guide member, and a reflection type LCD having a display region including a plurality of pixels for performing a display function, the optical guide member having first and second principal faces opposite to each other and first and second end faces opposite to each other, wherein the reflection type LCD is disposed on or above the first principal face of the optical guide member, wherein light from the light source enters the optical guide member at the first end face, exits the optical guide member at the first principal face so as to be incident on the reflection type LCD and reflected therefrom, reenters the optical guide member at the first principal face, and exits the optical guide member at the second principal face toward a viewer, wherein the reflection type LCD includes a plurality of color composite pixels and a color filter layer having a regular array of a plurality of color filters, each of the plurality of color composite pixels including a plurality of color pixels, each of the plurality of color pixels being defined by a corresponding one of the plurality of color filters, the plurality of color pixels having a pitch P1 along a first direction, and the plurality of color composite pixels having a pitch P2 along a second direction, the pitch P1 being smaller than the pitch P2, and the light source being disposed in the vicinity of a side of the display region extending substantially in parallel to the first direction, wherein the optical guide member includes a periodic structure formed on the second principle face, the periodic structure including propagation portions and reflection portions alternating along a third direction, wherein the third direction coincides with neither the first direction nor the second direction, wherein the third direction constitutes an angle in the range from about 10Â° to about 80Â° with respect to the first direction.