FILM FOR BACKLIGHT UNIT AND BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY INCLUDING SAME

• Main Authors: LEE, WON JOO, JUNG, CHUL HO, CHO, OUL, KANG, HYUN A, JANG, HYO SOOK, JANG, EUN JOO, KWON, SOO KYUNG, HAN, IN TAEK, JUN, SHIN AE
• Format: Patent
• Language: English; Korean
• Published: 15.10.2013
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; GENERAL PROCESSES OF COMPOUNDING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PHYSICS; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

PURPOSE: A film for a backlight unit improves color reproducibility and chromatic purity and simplifies the manufacturing process of the backlight unit. CONSTITUTION: A film for a backlight unit (10) includes a nanocrystal-polymer composite film (12) including a semiconductor nanocrystal(13,15) and a matrix polymer (19) in which the semiconductor nanocrystal is dispersed. The matrix polymer is polymerized of a multifunctional photo-curable oligomer, a monofunctional photocurable monomer, and a polyfunctional photo-curable crosslinking agent. The content (A1) of a structure unit derived from the polyfunctional photocurable oligomer, the content (A2) of a structure unit derived from a monofunctional photocurable monomer, and the content (A3) of a structure unit derived from a polyfunctional photocurable crosslinking agent satisfies A1<(A2+A3). The polyfunctional photocurable oligomer has an acid value of 0.1 mgKOH/g or less.