One of the essential components of liquid crystal display (LCD) is two polarizers, which need to sandwich the panel, generally, at very outside of the LCD. The initially linearly polarized light after the 1st polarizer can change its transverse direction or an ellipse of the polarization according t...
One of the essential components of liquid crystal display (LCD) is two polarizers, which need to sandwich the panel, generally, at very outside of the LCD. The initially linearly polarized light after the 1st polarizer can change its transverse direction or an ellipse of the polarization according to a uniaxial direction of LC. The 2nd polarizer, therefore, can allow the modulated light penetrated for a bright state. The image quality of LCD, such as contrast ratio,brightness and visibility in oblique viewing angles, strongly depends on the optical properties of polarizers. A retardation film in a polarizer, especially, is crucial to control the viewing angle property of LCD. This study, firstly, focuses on how to design the optical property of retardation film to enhance the LCD characteristics in oblique viewing angles.
In organic light emitting diode (OLED), on the other hand, the retardation film can be utilized to control the reflectance of OLED panel. Secondly, in this dissertation, the ideal structure of the wideband anti-reflective circular polarizer will be proposed for a true black state in all viewing directions of OLED.
To improve the image quality of flat panel display (FPD) as a display engineer, one must understand the basic optics related to the display technology. Optics can help us to resolve the serious quality problems in a principle view point, which frequently occur in an industrial workplace. At third, in this study, the basic optics, including Fresnel equation, multi-reflection, Jones vector, Jones matrix, Stokes parameter and Poincare sphere, will be introduced in easy writing.
Considering an engineering plastic material for a protection film in a polarizer gives rise to direct reduction in the product-cost. However, the engineering plastic films intrinsically exhibit high retardation due to the mechanical stretching in fabrication process. Such a high retardation induces a chromatic fringe pattern, so-called color mura issue in oblique viewing angle directions. Therefore, lastly, the dissertation will propose the low-cost polarizer while demonstrating high-suppression in the color mura.
One of the essential components of liquid crystal display (LCD) is two polarizers, which need to sandwich the panel, generally, at very outside of the LCD. The initially linearly polarized light after the 1st polarizer can change its transverse direction or an ellipse of the polarization according to a uniaxial direction of LC. The 2nd polarizer, therefore, can allow the modulated light penetrated for a bright state. The image quality of LCD, such as contrast ratio,brightness and visibility in oblique viewing angles, strongly depends on the optical properties of polarizers. A retardation film in a polarizer, especially, is crucial to control the viewing angle property of LCD. This study, firstly, focuses on how to design the optical property of retardation film to enhance the LCD characteristics in oblique viewing angles.
In organic light emitting diode (OLED), on the other hand, the retardation film can be utilized to control the reflectance of OLED panel. Secondly, in this dissertation, the ideal structure of the wideband anti-reflective circular polarizer will be proposed for a true black state in all viewing directions of OLED.
To improve the image quality of flat panel display (FPD) as a display engineer, one must understand the basic optics related to the display technology. Optics can help us to resolve the serious quality problems in a principle view point, which frequently occur in an industrial workplace. At third, in this study, the basic optics, including Fresnel equation, multi-reflection, Jones vector, Jones matrix, Stokes parameter and Poincare sphere, will be introduced in easy writing.
Considering an engineering plastic material for a protection film in a polarizer gives rise to direct reduction in the product-cost. However, the engineering plastic films intrinsically exhibit high retardation due to the mechanical stretching in fabrication process. Such a high retardation induces a chromatic fringe pattern, so-called color mura issue in oblique viewing angle directions. Therefore, lastly, the dissertation will propose the low-cost polarizer while demonstrating high-suppression in the color mura.
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