Design and Structure of Narrow Border Module Using Quantum Dot Enhancement Film

• Main Authors: Pan, Chun-Yun, 潘鈞允
• Other Authors: Chen, Ren-Haw
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/dcb94a

碩士 === 國立交通大學 === 工學院精密與自動化工程學程 === 103 === With the rapid development of liquid crystal display (LCD) technology in recent years, it has become ubiquitous in our lives. Because of considerable industry competition, studies on major technological topics have aimed at improving resolution, response times, color reality, and narrow borders. Thus far, no small-sized display has had a narrow border and quantum-dot enhancement film. This thesis focused on improving the color saturability of an LCD by adopting quantum-dot enhancement film on a liquid crystal monitor (LCM) with a narrow border. In addition, the paper also provides design direction for the high-color saturability and narrow border of a small-sized LCM. Quantum-dot enhancement film is efficient for increasing color range and achieving a wide color gamut for a backlighting unit (BLU); however, corresponding problems such as insufficient area on the boundaries of the quantum-dot enhancement film and material thicknesses still require solutions. In this study, a novel BLU with a special structure and materials was introduced to recycle boundary light and mix it with blue light to produce white light. This approach is helpful for eliminating the phenomenon of blue light leaking from the edge of a BLU. In this study, the initial method of using a blue-chip LED to stimulate yellow phosphor could only reach a color saturability of CIE 1931 (x,y) 73% after collaborative filtering because the color purity of the yellow phosphor was insufficient. However, by using a blue-chip LED to emit a blue light that passed through a light guide plate and then irradiated the quantum-dot enhancement film (which included green and red nanoparticles), the color saturability of the CIE value could meet the specification of CIE 1931 (x,y) 103%. An optical system with high color saturability and a narrow border was designed in this study. The results indicated that the system is helpful for improving the color quality of an LCD with a high color gamut and feasible for applications in a small-sized LCM with a narrow border.