Patent ID: 9261640
Filing Date: 2016-02-16
CPC Classification: G02B,G02F

Claim Text:
1. A liquid crystal display apparatus, comprising: a liquid crystal display panel comprising a liquid crystal cell between a first polarizing plate provided on a viewer side and a second polarizing plate provided on a back surface side; and a surface light source device for illuminating the liquid crystal display panel from the back surface side, wherein the surface light source device comprises: wherein a ridge line direction of the columnar unit prisms is approximately parallel to the light incident surface of the light guide plate, wherein a transmission axis of the second polarizing plate is approximately parallel to a polarization direction of the second directivity light and the light guiding direction of the light in the light guide plate, and wherein the transmission axis of the second polarizing plate is approximately perpendicular to a transmission axis of the first polarizing plate.