Title:
A manufacturing method of a lighting installation, an LCD device, a display device, and a lighting installation
Document Type and Number:
Japanese Patent JP6136096
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To optimize and improve light extraction efficiency, thereby improving a change in chromaticity by a view angle.SOLUTION: A luminaire 10 has a light extraction member 7 provided with a light deflection element 5 laminated on a light radiation surface of an EL element 101. The light deflection element 5 is formed by arranging a large number of minute convex portions 5a closely on the light radiation surface. The convex portions 5a have a convex surface in a longitudinal section view, where a height shape at a displacement x in the width direction on the convex surface can be expressed by an irregular function f(x). Letting a difference between the maximum and the minimum values of the function f(x) be Δf(x), then 0.001 mm≤Δf(x)≤0.300 mm is satisfied. Assuming that a function derived by extracting an inflection point in the function f(x) is g(x), an average inclination rate in absolute value |dg(x)/dx|of inclination between two adjacent points in the function g(x) satisfies the expression 1≤|dg(x)/dx|≤8.
Inventors:
Hayato Sato
Application Number:
JP2012076250A
Publication Date:
May 31, 2017
Filing Date:
March 29, 2012
Export Citation:
Assignee:
Toppan Printing Co., Ltd.
International Classes:
H05B33/02; G02F1/13357; H01L51/50
Domestic Patent References:
| JP2005038767A | ||||
| JP9050031A | ||||
| JP2004342513A |
Foreign References:
| WO2008096748A1 | ||||
| US20040027062 |
Attorney, Agent or Firm:
Shiro Suzuki
Masatake Shiga
Tadashi Takahashi
Shunsuke Fushimi
Masatake Shiga
Tadashi Takahashi
Shunsuke Fushimi