撓性顯示器性能量測方法之研究(II)

Abstract

將出現於市場上的電子紙、電子書、電子車票都必須具備軟性顯示 器，因為軟性顯示器有著輕、薄、可撓曲、耐衝擊具安全性，且不受場 合、空間限制的特性，儼然成為下一世代最佳之顯示器，所以軟性顯示 器之性能量測成為一個重要的課題。本計畫擬分兩年進行，第一年正在 進行中，著重於發展雙機械臂的協同控制，使該兩支機械臂能夠夾持顯 示器，從事後續機械和光電性能的量測，而且進行二維影像的方法，以 分析軟性顯示器的應變。第二年則擬進一步建立三維影像的方法，以改 善第一年的應變量測準確性。並且量測顯示器的光電性能。 國內機器人研究大都屬於單一機械臂或者步行機器人。本計畫使用 外購的機械臂，自行撰寫C 語言控制程式，建立好兩支機械臂彼此間的 協調控制。利用協調同步的動作，施加外力於撓性顯示器兩側，造成扭 轉以及彎矩的作用，使得撓性顯示器產生變形，並以一台CCD 拍攝顯示 器變形的狀況，再利用二維數位影像處理的方法，計算出顯示器的曲率 半徑，反推出機械性質。上述第一年的研究計畫正在進行中，然而為了 改善計算出來應變分佈的準確性，第二年擬自行撰寫程式完成三維數位 影像處理的方法，架設兩台CCD 取像，運用前一年的雙支協同控制的機 械臂，進行實驗，比較各種變形狀況下，亦即不同扭轉角和曲率半徑的 時候，它的阻抗變化與響應時間，阻抗大小關係節能與否，不僅實驗量 測，本計畫還擬推導阻抗和顯示器的幾何變形關係的理論模式。此外， 為了鑑定成像品質，將建立量測亮度的方法。

Being able to serve as e-book, e-paper, and e-ticket in the forthcoming market, flexible display is thin and flexible, securities shock-resistant, not limited by the occasion or space, and is promising as forthcoming display device. Therefore, the performance measurement of flexible display becomes an important issue. This project intends to be carried out in two years. The first year is being undertaken and focused on cooperative control between two robot manipulators, which serve to clamp both ends of the display for subsequent mechanical and electro-optical property measurement. Two dimensional image processing method will be used to analyze strain distribution of flexible display. In practice, e-book and e-paper will subject to twist and bending due to portable use. The second year will further construct a three-dimensional image processing method in order to improve resultant accuracy in the first year. Robotic research in our country is mostly concerned with single robot manipulator or walking robots. Instead, two robot manipulators will be controlled in cooperative and simultaneous manner in this project based on C language code. Cooperative movement between two manipulators exerts forces on both sides of the display so as to result in torsional or bending deformations of the display. A CCD camera is used to capture digital image, which is computed by a two-dimensional image processing method to yield measured strain distribution on the display under different radii of curvature. The fist year of this project is currently carrying out the above tasks. However, to improve measurement accuracy, this project proposes in the second year that not only two CCD cameras instead of one CCD will be used, but also a code for three-dimensional image processing will be developed. Display deformation resulting from two manipulator cooperative operation will be captured by two CCDs. The second year will further investigate display impedance variation with display geometry caused by twist and bending. Not only measurement method will be constructed, but also theoretical derivation of the relationship between impedance and deformation geometry resulting from twist and bending will be conducted.