Patent ID: 7066601

Claim:
A projection display comprising: an illumination module; and an optical modulator for modulating light incident from the illumination module in response to image data, wherein the illumination module comprises: a light source comprising a plurality of light emitting devices; a light guide panel comprising a top surface from which light is emitted, the top surface facing the optical modulator, and an edge surface on which light is incident, the light guide panel having a rectangular cross section; and an optical transport member for guiding light emitted from the light source to the edge surface of the light guide panel, the cross-sectional area of the optical transport member parallel to the edge surface increasing from the edge surface to the light source, wherein the optical transport member is made of a transparent material, and comprises a light emitting portion facing the edge surface, a light incident portion facing the light source, and a body portion connecting the light incident portion to the light emitting portion, and wherein the body portion comprises a plurality of stair portions each of which comprises a first surface parallel to a direction in which the light travels and a second surface reflection-processed, the first surface and the second surface forming a predetermined angle therebetween.