高分子散射液晶應用於主動式陣列薄膜電晶體透明液晶顯示器

Abstract

本研究主要是利用高分子散射液晶技術應用於主動式陣列薄膜電晶體透明液晶顯示器。同時發展單色主動式陣列薄膜電晶體透明液晶顯示器以及彩色主動式陣列薄膜電晶體透明液晶顯示器。其中，單色主動式陣列薄膜電晶體透明液晶顯示器的穿透態的穿透率可以達到40%以上，散射態的穿透率可以達到3%以下，以及驅動電壓符合主動式陣列薄膜電晶體。彩色主動式陣列薄膜電晶體透明液晶顯示器的穿透態的穿透率可以達到15%以上，散射態的穿透率可以達到1.5%以下，以及驅動電壓也符合主動式陣列薄膜電晶體。並且本論文還提出顯示效果提升概念，改善高分子散射液晶技術應用於主動式陣列薄膜電晶體透明液晶顯示器所造成的散射顯示問題。最後，本論文專注於探討利用高分子散射液晶技術應用於主動式陣列薄膜電晶體透明液晶顯示器的電光特性、顯示效果以及未來相關應用。本研究明顯指示出利用高分子散射液晶技術應用於主動式陣列薄膜電晶體透明液晶顯示器具有免PI轉寫製程、不需偏光板、較佳可視性、高穿透率、不需背光模組(只需環境光源)等等的優良特性。In this study, we using polymer dispersed liquid crystal (PDLC) technology to apply in active-matrix thin-film transistor (TFT) transparent liquid crystal display (LCD). Then, we have developed the monochromatic active-matrix TFT transparent LCD and the color active-matrix TFT transparent LCD by using PDLC technology. In the monochromatic active-matrix TFT transparent LCD, the transmittance of the transparent state is upward 40%, the transmittance of the scattering state is under 3%, and the driving voltage is satisfied with active-matrix TFT. In the color active-matrix TFT transparent LCD, the transmittance of the transparent state is upward 15%, the transmittance of the scattering state is under 1.5%, and the driving voltage is also satisfied with active-matrix TFT. Also, we have developed unsharp-masking filter method to improve the visual quality of transparent PDLC display. Finally, we have focused on discussing the electro-optical characteristic, display performances and future applications for active-matrix TFT transparent LCD by using PDLC technology. It indicated that the active-matrix TFT transparent LCD by using PDLC technology has some advantages, such as, polyimide less, polarizer free, good visibility, high transparency, backlight less (environmental light only), and so on.