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논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 김병민
- 발행연도
- 2016
- 저작권
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The structure of the mobile phone is getting thinner trend, the structural strength and impact resistance of TFT-LCD modules are becomes to be reduced. Consequently, need to the strength reinforced bezel frame for TFT-LCD module. In this study, the design procedure for multi-hemming process has been suggested for manufacturing bezel frame for the strengthen TFT-LCD modules
First of all, it was calculated using the analytical in which is equation of bending moment on simply supported beam for determining the minimum number of required folding edges. And using finite element analysis(FEA) to determine the number of required folding edges.
Subsequently, another FE analysis was carried out in order to investigate the effects of the process parameters on the dimensional accuracy of the TFT-LCD bezel frame and to design the progressive hemming process. The analysis results were validated by hemming experiments performed using STS304 stainless steel with a thickness of 0.3 mm and thickness of 0.2mm. Finally, the quality of the bezel frame was estimated through measurements of its dimensional accuracy and bending stiffness. From the experimental results, it was confirmed that a bezel frame with a height distribution of thickness 0.3mm is 1.5±0.05 mm, thickness 0.2mm is 1.2±0.05 mm and a respectable bending stiffness of 65 N/mm, 55N/mm, respectively could be manufactured using the proposed process.
First of all, it was calculated using the analytical in which is equation of bending moment on simply supported beam for determining the minimum number of required folding edges. And using finite element analysis(FEA) to determine the number of required folding edges.
Subsequently, another FE analysis was carried out in order to investigate the effects of the process parameters on the dimensional accuracy of the TFT-LCD bezel frame and to design the progressive hemming process. The analysis results were validated by hemming experiments performed using STS304 stainless steel with a thickness of 0.3 mm and thickness of 0.2mm. Finally, the quality of the bezel frame was estimated through measurements of its dimensional accuracy and bending stiffness. From the experimental results, it was confirmed that a bezel frame with a height distribution of thickness 0.3mm is 1.5±0.05 mm, thickness 0.2mm is 1.2±0.05 mm and a respectable bending stiffness of 65 N/mm, 55N/mm, respectively could be manufactured using the proposed process.
목차
1. 서 론 11.1 연구 배경 및 동향 11.2 연구 목적 41.3 연구 내용 및 범위 42. 베젤 프레임 다단 헤밍 최소 굽힘부 개수 선정 62.1 이론식을 이용한 굽힘부 개수 선정 62.2 유한요소 구조 해석 모델 92.3 유한요소 구조 해석 결과 103. 베젤 프레임 다단 헤밍부 공정 설계 123.1 소재 전개길이 결정 123.2 금형 분할 설계 123.3 굽힘 공정의 금형 R 과 의 설계 133.4 굽힘부 치수 오차에 대한 보정 설계 154. 실험 174.1 베젤 프레임 제작 실험 및 고찰 174.2 3점 굽힘 강도시험 175. 결론 19참고문헌 20표 22그림 25Abstract 53
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