公开(公告)号：US09194994B2

公开(公告)日：2015-11-24

申请号：US14147736

申请日：2014-01-06

Applicant: Japan Display Inc.

Inventor： Ken Kagabu ,  Yasuhisa Shiraishi ,  Yoshikazu Tanabe ,  Yoshihiro Nishimine

IPC: G02F1/1335 ,  F21V8/00

CPC classification number: G02B6/0038 ,  G02B6/0016 ,  G02B6/0043 ,  G02B6/0055

Abstract: A liquid crystal display device includes: a light guide plate including a front surface, a back surface and an edge surface, the light guide plate being arranged such that the edge surface faces a light source, the light guide plate internally reflecting light incident from the edge surface and causing surface emission from the front surface; a liquid crystal display panel; and a reflective sheet arranged so as to face the back surface of the light guide plate. The back surface includes a first portion and a second portion. A surface of the second portion is located at a position recessed relatively from a surface of the first portion. The surface of the first portion is a rough surface. The surface of the second portion is a smooth surface. The reflective sheet is in contact with the first portion but avoids contact with the second portion.

Abstract translation: 一种液晶显示装置，包括：导光板，其具有前表面，后表面和边缘表面，所述导光板被配置为使得所述边缘表面面对光源，所述导光板内部反射从所述导光板入射的光 边缘表面并引起来自表面的表面发射; 液晶显示面板; 以及布置成面对导光板的后表面的反射片。 后表面包括第一部分和第二部分。 第二部分的表面位于相对于第一部分的表面凹陷的位置处。 第一部分的表面是粗糙的表面。 第二部分的表面是光滑的表面。 反射片与第一部分接触，但避免与第二部分接触。