BACKLIGHT UNIT AND DISPLAY APPARATUS INCLUDING THE SAME

Title:

BACKLIGHT UNIT AND DISPLAY APPARATUS INCLUDING THE SAME

Document Type and Number:

WIPO Patent Application WO/2018/088750

Kind Code:

A1

Abstract:

A backlight unit capable of implementing matrix local dimming using cholesteric liquid crystal and a polarizing portion, and a display apparatus including the backlight unit are provided. A display apparatus may include: a backlight unit; and an image forming unit configured to create an image by performing at least one from among transmitting and blocking light emitted from the backlight unit. The backlight unit may include: a waveguide plate; a cholesteric liquid crystal layer disposed in front of the waveguide plate, and configured to perform at least one from among transmitting and circularly polarizing the light emitted from the waveguide plate, to generate at least one from among transmitted light and circularly polarized light; and a polarizing portion disposed in front of the cholesteric liquid crystal layer, and configured to transmit the transmitted light in a front direction, and to block the circularly polarized light.

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Inventors:

MIN KWAN SIK (KR)
KANG KI HYUNG (KR)
JEONG SEUNG JUN (KR)

Application Number:

PCT/KR2017/012223

Publication Date:

May 17, 2018

Filing Date:

November 01, 2017

Export Citation:

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Assignee:

SAMSUNG ELECTRONICS CO LTD (KR)

International Classes:

G02F1/1335; G02F1/137

Domestic Patent References:

WO2016002343A1

2016-01-07

Foreign References:

US20090251625A1	2009-10-08
KR20160116792A	2016-10-10
KR101414641B1	2014-07-03
KR20160032225A	2016-03-23
KR20120077608A	2012-07-10
KR20110138585A	2011-12-28
KR20080057883A	2008-06-25

Other References: