公开(公告)号：US20180246371A1

公开(公告)日：2018-08-30

申请号：US15959329

申请日：2018-04-23

Applicant: StoreDot Ltd.

Inventor： Daniel SZWARCMAN ,  Maxim LIBERMAN ,  Evgenia Liel (Jeny) KUKS ,  Rony SCHWARZ ,  Ziv SOBOL ,  Daniel ARONOV ,  Mor Shmuel ARMON ,  Elad Cohen ,  Eran SELLA

IPC: G02F1/1335 ,  G02B27/30

CPC classification number: G02F1/133514 ,  C09B11/24 ,  G02B5/201 ,  G02B27/30 ,  G02F1/133528 ,  G02F1/133602 ,  G02F1/133603 ,  G02F1/133605 ,  G02F1/133606 ,  G02F1/133617 ,  G02F1/133621 ,  G02F2202/046

Abstract: LCDs (liquid crystal displays) with improved efficiency and performance, as well as corresponding methods are disclosed. Color conversion films and elements with rhodamine-based fluorescent compounds and/or assistant dyes are used to modify the spectrum of the illumination provided by the backlight unit in either or both the backlight unit itself and the LCD panel, in various configurations. Color conversion may be performed above the LC module, possibly by a patterned layer incorporating the color filters, and/or within the backlight unit within a fluorescence-intensifying section in which radiation is recycled to enhance color conversion. Film configuration, positions and optionally supportive structures are provided, to extend the lifetime of the fluorescent compounds. Collimation of backlight illumination may further enhance the optical performance of disclosed LCDs.