Patent ID: 7497609

Claim:
A display apparatus comprising: a plate photoconductor; a display panel adjacent to the plate photoconductor; and an illuminating device, wherein the illuminating device further comprises: a light source; and a rod photoconductor providing light to the plate photoconductor, wherein the rod photoconductor includes a plane of incidence entered by light from the light source, a reflection surface having a plurality of prisms and an exit plane located opposite to the reflection surface, wherein a width between the reflection surface and the exit plane at the plane of incidence of the rod photoconductor is smaller than a width of a light emission surface of the light source, the width between the reflection surface and the exit plane at the plane of incidence of the rod photoconductor being a width in a first direction from the reflection surface to the exit plane of the rod photoconductor, the width of the light emission surface of the light source being a width in the first direction, and wherein the reflection surface of the rod photoconductor is formed of a convex surface defined by a linear central portion between two linear tapered portions, such that an entire outer surface of the reflection surface is completely defined by the central portion and the tapered portions.