公开(公告)号：US07489373B2

公开(公告)日：2009-02-10

申请号：US10394533

申请日：2003-03-21

Applicant: Yong-Ii Kim

Inventor： Yong-Ii Kim

IPC: G02F1/1335

CPC classification number: G02B6/0053 ,  G02B5/045 ,  G02F1/133615

Abstract: A prism sheet that allows light that is incident with an angle below 2.8° with respect to an axis normal to a light incident surface to be refracted and emitted, and a liquid crystal display device including the prism sheet are presented. The prism sheet includes a first surface through which light from a light source enters the prism sheet and a second surface through which the light exits the prism sheet. The second surface also includes polygonal protruding members having length axes substantially parallel to each other. Each of the polygonal protruding members has at least one first side forming an angle ranging from 65° to 75° with respect to a line normal to the first surface, and at least one second side forming an angle ranged from 40° to 50° with respect to a line normal to the first surface.

Abstract translation: 提供了允许相对于与光入射表面垂直的轴以小于2.8°的角度入射的光被折射和发射的棱镜片，以及包括棱镜片的液晶显示装置。 棱镜片包括第一表面，来自光源的光进入棱镜片的第一表面和光离开棱镜片的第二表面。 第二表面还包括具有基本上彼此平行的长轴的多边形突出构件。 每个多边形突出构件具有至少一个第一侧，相对于垂直于第一表面的线形成从65°至75°的角度，并且形成角度范围为40°至50°的至少一个第二侧， 相对于垂直于第一表面的线。