低溫多晶矽數位電路元件庫之建立與三維影像合成之電路設計

Cell Library Construction for LTPS-TFT Digital Circuits and Design for Non-Hole-Filling Depth Image Based Rendering

紀宗成(Tsung-Chen Chi)

指導教授 ： 范育成

國立臺北科技大學/電資學院/電腦與通訊研究所/碩士(2008年)

摘要

本論文將提及兩部份的成果，分別為低溫多晶矽數位電路元件庫之建構，與三維影像合成之電路設計。前者將以低溫多晶矽新製程技術來建立數位電路的元件資料庫，低溫多晶矽為近期先進的製程，由於載子移動率較高，因此，可將驅動電路、時序電路等整合於面板中，達成System on Panel的目標，適合應用於中小尺寸面板的攜帶型產品，如：手機、PDA或筆記型電腦等，低溫多晶矽所致力的終極目標與現今電子產品「輕薄短小」的趨勢不謀而合，極有發展潛力，但低溫多晶矽目前尚未有Cell Based Design Flow來輔助電路設計，只能使用Full-Custom Design Flow來設計電路，不利於設計複雜的電路，為了實現低溫多晶矽Cell Based Design Flow的願景，將以LCD的核心電路－時序控制電路為設計實例，完整的建構低溫多晶矽之數位電路元件庫。
後者為三維影像合成之電路設計，將使用Depth Image Based Rendering的方法，以二維影像與深度影像來產生左右視角的影像，搭配SHARP LL-151 3D顯示器，顯示三維立體視覺感的影像，在產生左右視角影像的過程中，當深度影像的遠近差距過大，會造成影像上的破洞與瑕疵，需要加以填補破洞與進行後處理，針對此問題，我們提出Non-Hole-Filling Depth Image Based Rendering的修正方法來降低大量的破洞，實驗數據顯示，使用修正方法將能有效減少90%的破洞數量，達到高品質的左右視角影像，進而實現高畫質的三維立體影像。

關鍵字

低溫多晶矽 ； 三維影像 ； 非填補破洞之深度影像描繪三維立體影像合成方法

並列摘要

In our thesis, the construction and verification for LTPS-TFT digital cell library and novel approach of depth image based rendering (DIBR) are proposed. We will briefly introduce as follow. LTPS-TFT process is a new technology in recent years. The process in LTPS-TFT brings us higher carrier mobility characteristic than in A-Si TFT. It also reduces the cost of discrete ICs, shortens the design cycles, decreases the electromagnetic interface (EMI), and realizes the flexible and bending panel to achieve the objective of flexible electronics. Nevertheless, it still has some drawbacks, which are only applied to small or middle size panel and lower operation frequency, etc., and worst of them is that there is no cell-based design flow for LTPS-TFT technology. Up to present, most circuits in LTPS-TFT process are still based on full-custom design style and hence waste much human resource and lead to a long time. For the purpose of reducing a great deal of time and human resource, the construction for LTPS-TFT digital cell library is essential in cell-based design flow.
The 3D-TV makes people experience promising future television. The 3D content of stereoscopic images is the most important specification in 3D-TV system. Traditionally, a stereoscopic image is generated by interlacing the above mentioned two-side view images; however, their prices are very high. Here, we present a new method of non-hole-filling depth image based rendering (NHFDIBR). With this approach, we can produce high quality two-side view images by using 2D image and its pixel-to-pixel depth image. Experimental results provide a comparison between the previous work and the proposed method. It shows that the latter can maintain image quality and reduce a great deal of holes. The statistical results portray that the proposed method can efficiently reduce above 90% hole counts in average. The architecture of NHFDIBR is separated into two steps. First, we will compute the horizontal displacement vector by the formula of converting depth value to depth distance. Then, generate two-side view images by utilizing the formula of image warping. We will use TSMC 1P6M 0.18um in CMOS process to complete our design.

並列關鍵字

Low Temperature Poly Silicon ； Three-Dimensional Stereo Image ； Non-Hole-Filling Depth Image Based Rendering

參考文獻

[1] K. Yoneda, R. Yokoyama, and T. Yamada, “Development Trends of LTPS TFT LCDs for Mobile Applications,” 2001 Symposium on VLSI Circuits Digest of Technical Papers, pp. 85-90, Jun. 2001.

[2] K. Chung, M. P. Hong, C. W. Kim, and I. Kang, “Needs and Solutions of Feature Flat Panel Display for Information Technology Industry,” IEEE International Electron Devices Meeting, 2002 (IEDM ’02), pp. 385-388, Dec. 2002.

[3] I. W. Wu, “Outlook of Low Temperature Poly Silicon (LTPS) Technology for Information Display and Beyond,” The 16th Annual Meeting of The IEEE Lasers and Electro-Optics Society, 2003, Vol. 2, pp. 882-883, Oct. 2003.

[4] D. N. Liu, Y. H. Yeh, and H. L. Chiou, “Development of Low Temperature p-Si TFT-LCD,” The 17th Annual Meeting of The IEEE Lasers and Electro-Optics Society, 2004, Vol. 1, pp. 182-183, Nov. 2004.

[8] Peter Hohenstatt, Leonardo da Vinci, 1998.