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Title: | 不同開口模式的透明顯示器之成像品質研究 Image Quality of Transparent Display with Different Aperture Structures |
Authors: | LI MINGYU 李明宇 |
Advisor: | 林晃巖(Hoang-Yan Lin) |
Keyword: | 透明顯示器,繞射,點擴散函數,調製傳遞函數,捲積, transparent display,diffraction,PSF,MTF,convolution, |
Publication Year : | 2019 |
Degree: | 碩士 |
Abstract: | 從1925年英国人约翰·洛奇·贝尔德發明黑白電視至今,顯示器的發展已經經歷了93年,在這93年顯示技術有了長足的發展。從黑白顯示器、彩色顯示器到高清顯示器、曲面顯示器,顯示技術在不斷進步的同時,也滿足了人們對於顯示技術日益嚴苛的需求。透明顯示作爲一種新型顯示技術,是次世代顯示技術的重要組成部分。利用透明顯示技術,可以完成普通顯示技術無法完成的任務,即在觀看顯示器本身觀看内容的同時,也可以看到顯示器后的資訊。在日常生活應用及某些特殊領域具有很高的需求,因此透明顯示技術的研究成为了當今顯示技術的熱點。
目前常見的透明顯示器為OLED透明顯示器,設計原理是將畫素集中排列,而沒有畫素的部分使用透明材料,使觀看者可以透過顯示器觀看到顯示器後的影像。由於每個透明部分的面積都很小,因此光通過顯示器時會出現光的繞射現象,導致后面影像的影像品質下降。本文將重點放在后面影像品質,設定不同的開口模式,利用繞射寬度、MTF曲綫和PSF曲綫三者作爲評價依據,模擬計算不同開口模式對於後面影像品質的影響。在模擬過程中,我們發現,圓形孔徑相比於方形孔徑、整合式孔徑相比于分散式孔徑,後面影像品質更好,影響更小。最後,我們使用實際透明顯示器實際測量PSF曲綫,嘗試計算該透明顯示器的成像傳遞函數,以此作爲標準,可以快速准確的計算不同類型透明顯示器的成像傳遞函數,為模擬及評估透明顯示器影像品質提供方便。 Since the invention of black-and-white TV by J. L. Baird in 1925, the display technology has undergone a significant development. Chronologically, from the first black-and-white display, color display, high-definition display, and to curved screen display, the display technology meets increasingly stringent requirements from users. As a new display technology, the transparent display is an important part of the next-generation display technology. With transparent display technology, one can accomplish tasks which ordinary display technology cannot complete alone. While watching the contents of the display panel, contents behind the display can be seen as well. In daily life applications and perhaps a few more specific fields (e.g.), the demand for transparent display technology is surprisingly high. As such, the research and development of the transparent display is gradually seeing more focus in present display technology. One of the most common transparent display is the OLED transparent display. The design principle is to concentrate the pixels in a certain area, and the areas without pixels are made to be the transparent part of the display. However due to the periodic nature of the display structure, diffraction phenomenon occurs as light passes through the panel, causing the blur in the background image. This article focuses on the quality of the background image, and uses the diffraction width, MTF curve and PSF curve as the points of evaluation to discuss the influence of different aperture structures on background image. We find that compared to rectangular structures with high spatial frequency, circular structures with low spatial frequency have less influence on background images. As verification, the PSF of an actual transparent display panel is measured to calculate the imaging transfer function of the transparent panel. Using this method, we can calculate imaging transfer function of different transparent panel quickly and accurately, which provides a convenient tool to simulate and evaluate the quality of a transparent display. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/78865 |
DOI: | 10.6342/NTU201900017 |
Fulltext Rights: | 有償授權 |
Appears in Collections: | 光電工程學研究所 |
Files in This Item:
File | Size | Format | |
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ntu-108-R05941104-1.pdf Restricted Access | 4.62 MB | Adobe PDF |
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