반사층의 제조 방법 및 반사층

• Main Authors: KATOH SHUNYA, TAKASAGO RIE
• Format: Patent
• Language: Korean
• Published: 24.10.2018
• Subjects: 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; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

본 발명은, 우수한 확산 반사성을 갖는 반사층의 제조 방법 및 반사층을 제공한다. 본 발명의 반사층의 제조 방법은, 액정 화합물 및 카이랄제를 포함하는 조성물을 기판 상에 도포하고, 조성물을 가열하여 액정 화합물을 배향시켜 콜레스테릭 액정상으로 하는 공정 1과, 콜레스테릭 액정상 상태의 조성물에 포함되는 카이랄제의 나선 유기력이 5% 이상 상승하도록, 조성물을 냉각 또는 가열하여, 반사층을 형성하는 공정 2를 갖는다. Provided is a method for producing a reflective layer having excellent diffuse reflectivity. The method for producing a reflective layer of the present invention includes Step 1 of applying a composition containing a liquid crystal compound and a chiral agent onto a substrate and heating the applied composition to align the liquid crystal compound into a cholesteric liquid crystalline phase state, and Step 2 of forming a reflective layer by cooling or heating the composition so that the helical twisting power of the chiral agent contained in the composition in the cholesteric liquid crystalline phase state increases by 5% or more.