Title:
LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2017044791
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid crystal display device having high color reproducibility, adaptable for DCI specifications and advantageous from the viewpoint of cost.SOLUTION: The liquid crystal display device includes a backlight having a white LED comprising a combination of a blue LED, a red phosphor and a green phosphor to mix colors, and a color filter having color pixels of a plurality of colors including a red pixel, a green pixel and a blue pixel on a transparent substrate. The emission spectrum of the white LED exhibits a first peak wavelength in a range from 440 nm to 470 nm, a second peak wavelength in a range from 520 nm to 550 nm, a third peak wavelength and a fourth peak wavelength in a range from 610 nm to 700 nm, in which the first peak wavelength λ(nm) and the second peak wavelength λ(nm) satisfy (numerical expression 1): 85≤λ-λ≤90.SELECTED DRAWING: Figure 1
Inventors:
ISHIMARU YOSHIKO
YAMAUCHI ATSUSHI
AOKI EIJI
ASAHI NORIKO
YAMAUCHI ATSUSHI
AOKI EIJI
ASAHI NORIKO
Application Number:
JP2015165804A
Publication Date:
March 02, 2017
Filing Date:
August 25, 2015
Export Citation:
Assignee:
TOPPAN PRINTING CO LTD
International Classes:
G02F1/13357; F21S2/00; G02B5/20; G02F1/1335; H01L33/00; H01L33/50
Domestic Patent References:
| JP2015052648A | 2015-03-19 | |||
| JP2015087527A | 2015-05-07 | |||
| JP2009192664A | 2009-08-27 | |||
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Foreign References:
| WO2016056485A1 | 2016-04-14 | |||
| WO2015025743A1 | 2015-02-26 | |||
| US20080143932A1 | 2008-06-19 |