EP 4070158 A4 20231018 - BACKLIGHT UNIT WITH EMISSION MODIFICATION
Title (en)
BACKLIGHT UNIT WITH EMISSION MODIFICATION
Title (de)
RÜCKBELEUCHTUNGSEINHEIT MIT EMISSIONSÄNDERUNG
Title (fr)
UNITÉ DE RÉTROÉCLAIRAGE À MODIFICATION D'ÉMISSION
Publication
Application
Priority
- US 202117177920 A 20210217
- US 202117348570 A 20210615
- US 2021052904 W 20210930
Abstract (en)
[origin: WO2022177606A1] A display system and method are disclosed that includes an electronic display device and a backlight comprising a light-emitting array, a reflector adjacent to the light-emitting array, a diffuser opposite the reflector, a first brightness enhancing layer adjacent the diffuser, and an optical film that includes at least one light conversion material or at least one light conversion material. The light conversion or light absorbing material is structured and configured to reduce hazardous blue light emissions between about 400 nm to about 500 nm. The disclosed display device can include a liquid crystal panel configured to control transmission of light from the backlight to a viewer. The display device also includes one or more optical films that incorporate one or more light conversion or light absorbing materials. The optical films can be positioned between the layers of the disclosed display device and give enhanced blue-light absorption to the display device.
IPC 8 full level
G02F 1/1335 (2006.01); F21K 9/64 (2016.01); F21V 9/32 (2018.01); G02B 5/02 (2006.01); G02B 5/20 (2006.01)
CPC (source: EP KR)
G02B 5/0242 (2013.01 - EP KR); G02B 5/0278 (2013.01 - EP KR); G02B 5/206 (2013.01 - EP KR); G02F 1/133614 (2021.01 - EP KR); G02F 1/133617 (2013.01 - KR); G02F 1/133624 (2021.01 - EP KR); G02F 1/133617 (2013.01 - EP); G02F 2201/08 (2013.01 - EP KR); G02F 2201/50 (2013.01 - EP KR); G02F 2202/36 (2013.01 - EP KR)
Citation (search report)
- [XI] US 2019196071 A1 20190627 - BARRETT JUSTIN [US], et al
- See references of WO 2022177606A1
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022177606 A1 20220825; CN 115226403 A 20221021; EP 4070158 A1 20221012; EP 4070158 A4 20231018; JP 2023519464 A 20230511; KR 20230143917 A 20231013
DOCDB simple family (application)
US 2021052904 W 20210930; CN 202180005599 A 20210930; EP 21857009 A 20210930; JP 2022520547 A 20210930; KR 20227009105 A 20210930