Patent ID: 6515722
Filing Date: 2003-02-04
Classification: G02B,G02F

Abstract:
A liquid crystal display comprising:a liquid crystal cell having a front surface serving as a viewing-side surface, and a back surface; a light guide panel having a first major surface provided with spaced parallel linear projections and a second major surface finished in a smooth flat plane; a light source disposed near the light guide panel such that light emitted from the light source is incident on a side surface of the light guide panel; an intermediate layer disposed between the front surface of the liquid crystal cell and the second major surface of the light guide panel; and a reflecting member provided on the liquid crystal cell; wherein the irregularities are ridges extended along lines substantially parallel to the side surface of the light guide panel and have a scalene triangular cross section in which a first interior angle, defined by a first side of the triangle disposed more proximate to the light source and a plane parallel to the second major surface of the light guide panel, is smaller than a second interior angle, defined by a second side of the triangle disposed more distal to the light source and a plane parallel to the second major surface of the light guide panel; and incident light from the light source is guided into the liquid crystal cell by the ridges, reflected by the reflecting member, travels though the light guide panel, and emerges outside the liquid crystal display.