Patent ID: 7477220
Filing Date: 2009-01-13
Classification: G02B,G02F

Abstract:
1. A three-dimensional liquid crystal display device comprising: a liquid crystal display panel including a plurality of pixels arranged in a matrix form, wherein color image data of three colors of red, green and blue in color images for right and left eyes for observation separately with the right and left eyes is selectively written in the pixels, and wherein the panel selectively displays color images of three colors of red, green and blue in the color images for the right and left eyes in accordance with the color image data for the right and left eyes; a plane light source which is disposed on a side opposite to an observation side of the liquid crystal display panel and which emits a first illuminative light of three colors of red, green and blue, having a directivity such that a peak of an emitted light intensity exists in a first direction inclined at a predetermined angle in a direction of one of an observer's right and left eyes with respect to a normal line of the liquid crystal display panel, and a second illuminative light of three colors of red, green and blue, having a directivity such that a peak of an emitted light intensity exists in a second direction inclined at a predetermined angle in a direction of the other one of the observer's right and left eyes with respect to the normal line of the liquid crystal display panel; and a control unit which selects unit color image data of three colors of red, green and blue for displaying the color image for the left eye, and unit color image data of three colors of red, green and blue for displaying the color image for the right eye in a predetermined optional order to successively write the data in the pixels of the liquid crystal display panel in one frame for displaying a three-dimensional image comprising the color images for the right and left eyes, so that, among the first and second illuminative lights, an illuminative light which has color and directivity corresponding to the unit color image data written in each pixel of the liquid crystal display panel is emitted from the plane light source in synchronization with the writing of the unit color image data, wherein the plane light source comprises: wherein the collimating film comprises a base film and a plurality of elongated ridges formed on a surface of the base film, each of the elongated ridges including: (i) first and second reflective surfaces comprising curved surfaces intersecting with the surface of the base film, and (ii) an incidence surface parallel to the emission surface of the light guide plate and intersecting with the curved surfaces.