Fabrication of anti-reflection thin films by a coatable polarizer and retarder with a novel photo-alignment materials
- 주제(키워드) anti-reflection film
- 발행기관 고려대학교 대학원
- 지도교수 윤호규
- 발행년도 2018
- 학위수여년월 2018. 2
- 학위구분 석사
- 학과 대학원 신소재공학과
- 원문페이지 64 p
- 실제URI http://www.dcollection.net/handler/korea/000000079817
- 본문언어 영어
- 제출원본 000045932362
초록/요약
To prepare a coatable circular polarizer, coated polarizers using coatable polarizer ink were prepared, the transmission and the polarization characteristics according to the thickness were confirmed. After synthesizing new chalcone unit in side chains of new polymaleimides and orienting them in TAC film, a retarder film was prepared by applying RMLC (reactive mesogen liquid crystal). In order to make an integral anti-reflection film, a PM6-p-ChF alignment material was aligned on a coatable polarizer film with LPUV, and then RMLC was cured on UV. The fabricated coatable polarizer showed different transmission and polarization characteristics depending on coating and drying conditions, the bar size and stage speed of the bar coater were factors for the coating conditions. Also, the thickness of the polarizer depends on the wire size of the bar, transmittance and polarization ratio were inversely related. In the previous study, since the polarization ratio was measured based on the transmittance of 40% in most cases, the same method was used in this paper. Hot dry, hotplate and microwave were used for the drying conditions, after ink coating, self-assembling of the dye and drying by vibration of the polar solvent were carried out to obtain the maximum polarization ratio to the transmittance. In order to make a circular polarizer, λ / 4 retardation must be implemented, the characteristics of orientation agent and RMLC were different according to spin coating condition, concentration and curing condition. The integrated antireflective film was affected by the polarizing rate, transmittance and retardation value of the coatable polarizer and Reflectivity was different depending on the angle of polarization axis and orientation axis.
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CONTENTS
ABSTRACT…………………………………………………………………i
List of Tables………………………………………………………………iv
Lists of Figures………………………………………………………………iv
1. INTRODUCTION…………………………………………………………1
2. EXPERIMETAL………………………………………………………7
2.1. Raw material ………………………………………………………7
2.2. Fabrication of coatable polarizer film ………………………………9
2.2.1. Manufacture of coatable polarizer by primer coating………9
2.2.2. Fabrication of coatable polarizer with polymer LCLC …10
2.2.3. Fabrication of coatable polarizer through Plasma surface treatment…11
2.2.4. Drying conditions using a microwave…………………………12
2.2.5. Polarizer efficiency ……………………………………………13
2.3. Fabrication of circular polarizer film………………………………15
2.3.1. Synthesis of main chain with spacer…………………………15
2.3.2. Synthesis of photo-reactive group……………………………17
2.3.3. Synthesis of final products……………………………………19
2.3.4. Circular polarizer film process………………………………21
2.4. Fabrication of anti-reflection film ………………………………22
2.4.1. Multi-layer anti-reflection film process……………………22
2.4.2. Integral anti-reflection film process………………………23
3. RESULTS AND DISCUSSIONS ……………………………………25
3.1. Evaluate of the polarizer characteristics …………………………25
3.1.1. Primer solution coating polarization efficiency…………25
3.1.2. Additive Mixed Polarization Efficiency…………………26
3.1.3. Plasma surface treatment polarization efficiency………29
3.1.4. Polarizer efficiency according to drying conditions……33
3.2. Retardation film properties………………………………………38
3.2.1. photo-alignment structure…………………………………38
3.2.2. Retardation according to RMLC solvent…………………40
3.3. Reflection properties …………………………………………43
3.3.1. Multi-layer film reflection properties……………………43
3.3.2. Integrated film reflective properties……………………45
4. CONCLUSION …………………………………………………………49
Reference ………………………………………………………………50
