EP 3532894 A1 20190904 - DISPLAYS WITH DIRECT-LIT BACKLIGHT UNITS
Title (en)
DISPLAYS WITH DIRECT-LIT BACKLIGHT UNITS
Title (de)
ANZEIGEN MIT DIREKTBELEUCHTETEN RÜCKBELEUCHTUNGSEINHEITEN
Title (fr)
DISPOSITIFS D'AFFICHAGE À UNITÉS DE RÉTROÉCLAIRAGE À ÉCLAIRAGE DIRECT
Publication
Application
Priority
- US 201762466492 P 20170303
- US 201715819085 A 20171121
- US 2018015776 W 20180129
Abstract (en)
[origin: WO2018160304A1] An array of pixels in a display may be illuminated by a backlight having an array (36) of light-emitting diodes (38) in an array of respective cells. A reflector (68) is used to reflect light from the light-emitting diodes (38) through the array of pixels. Within the cells, the reflector (68) has cross-sectional profiles that help distribute light (80) emitted from the light-emitting diodes (38) toward edges of the cells. A light diffuser layer (34) for the backlight may have a partially reflective layer (96) such as a thin-film interference filter with an angularly dependent transmission. Within each cell, the reflector (68) may have cross-sectional profiles with portions that are parabolic or elliptical.
IPC 8 full level
G02F 1/1335 (2006.01)
CPC (source: CN EP KR US)
G02F 1/133603 (2013.01 - CN KR US); G02F 1/133605 (2013.01 - CN EP KR US); G02F 1/133606 (2013.01 - CN KR US); G02F 1/133611 (2013.01 - KR US); G02F 1/133614 (2021.01 - KR); G02F 1/13362 (2013.01 - US); G02F 1/133603 (2013.01 - EP); G02F 1/133606 (2013.01 - EP); G02F 1/133607 (2021.01 - CN); G02F 1/133611 (2013.01 - EP); G02F 1/133612 (2021.01 - CN); G02F 1/133614 (2021.01 - EP US)
Citation (search report)
See references of WO 2018160304A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2018160304 A1 20180907; CN 108535912 A 20180914; CN 208092384 U 20181113; EP 3532894 A1 20190904; JP 2020513586 A 20200514; JP 7000429 B2 20220204; KR 102172907 B1 20201102; KR 20190070973 A 20190621
DOCDB simple family (application)
US 2018015776 W 20180129; CN 201810173014 A 20180302; CN 201820290529 U 20180302; EP 18705757 A 20180129; JP 2019528578 A 20180129; KR 20197015267 A 20180129