公开(公告)号：US20040051828A1

公开(公告)日：2004-03-18

申请号：US10653898

申请日：2003-09-04

Applicant: NEC LCD TECHNOLOGIES, LTD.

Inventor： Michiaki Sakamoto ,  Yuichi Yamaguchi ,  Hidenori Ikeno ,  Fumihiko Matsuno ,  Hironori Kikkawa

IPC: G02F001/1335

CPC classification number: G02B5/021 ,  G02B5/0221 ,  G02B5/0226 ,  G02B5/0284 ,  G02B5/10 ,  G02F1/133553

Abstract: A reflector for a reflection-type LCD device is provided, which reflects efficiently incident light to the viewer's side and that suppresses the change of color tone. The reflector comprises a roughened surface having a protrusion pattern. The protrusion pattern gives inclination angle to the surface according to a specific distribution where a first component with an inclination angle value of 0null is 15% or less in area and a second component with an inclination angle value from 2null to 10null is 50% or greater in area. The protrusion pattern gives a variation range of chromaticity coordinates (x, y) on a chromaticity diagram dependent on an angle of view. The variation range is limited in a circle on the chromaticity diagram. The circle has a radius of approximately 0.05 and a center at a point corresponding to white color.

Abstract translation: 提供了一种用于反射型LCD装置的反射器，其将入射光有效地反射到观看者侧并抑制色调变化。 反射器包括具有突起图案的粗糙表面。 突起图案根据特定分布给出倾斜角度，其中倾斜角度值为0°的第一部件的面积为15％或更小，并且倾斜角度值为2°至10°的第二部件为50° ％以上的面积。 突起图案根据视角给出色度图上的色度坐标（x，y）的变化范围。 变化范围在色度图上以圆圈为限。 圆的半径约为0.05，中心在与白色对应的点上。