COMPOSITE OPTICAL SHEET, METHOD FOR PREPARING THE SAME AND OPTICAL DISPLAY APPARATUS COMPRISING THE SAME

• Main Authors: PARK, SE HYUN, MIN, KYUNG JUN, LIM, HYOUNG TAE
• Format: Patent
• Language: English; Korean
• Published: 16.02.2016
• 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

Provided are a composite optical sheet, a method for preparing the same, and an optical display apparatus comprising the same. The composite optical sheet includes a first optical sheet which includes at least one first optical pattern on a surface; and a second optical sheet which is formed on the first optical sheet and includes an adhesive layer on a surface. The first optical pattern is infiltrated into the adhesive layer. The surface roughness (Ra) of the adhesive layer is 0.3μm or more. The modulus of the adhesive layer is 500 MPa to 3000 MPa. The purpose of the present invention is to suppress the generation of rainbow, mura, and/or Newton′s ring in passing the right. 일면에 하나 이상의 제1광학패턴을 포함하는 제1광학시트; 및 상기 제1광학시트 상에 형성되고 일면에 접착층을 포함하는 제2광학시트를 포함하고, 상기 제1광학패턴은 상기 접착층에 침투되고, 상기 접착층은 표면조도(Ra)가 0.3㎛ 이상이고, 상기 접착층은 모듈러스가 500MPa 내지 3000MPa인 복합광학시트, 이의 제조 방법 및 이를 포함하는 광학 디스플레이 장치가 제공된다.