Automatic vision system for final test of liquid crystal displays
نویسندگان
چکیده
This paper describes algorithms and hardware of the automatic output check system for liquid crystal dismain algorithmic dificulty of LCD check problem is detection of little defects in real time. To do this, the algorithm utilizing a priori information was designed. The methods used for functional LCD check do not require any human interference for its accommodation to new LCD types.
منابع مشابه
Automatic mura detection based on thresholding the fused normalized first and second derivatives in four directions
Hani Jamleh Tsung-Yu Li Shen-Zhi Wang Chien-Wen Chen Chia-Chia Kuo Ko-Shun Wang Charlie Chung-Ping Chen Abstract — The size of flat-panel liquid-crystal displays is getting larger; as a result, it is becoming harder to inspect for defects and may require a human visual inspector to judge the severity of the defects on the final product. Recently, mura phenomenon, which is defined as a visual bl...
متن کاملLiquid Crystal Microlenses for Autostereoscopic Displays
Three-dimensional vision has acquired great importance in the audiovisual industry in the past ten years. Despite this, the first generation of autostereoscopic displays failed to generate enough consumer excitement. Some reasons are little 3D content and performance issues. For this reason, an exponential increase in three-dimensional vision research has occurred in the last few years. In this...
متن کاملMental Workload and Task Performance for Indirect Vision Driving with Fixed Flat Panel Displays
Of interest to designers of future combat vehicles is the effect of indirect vision upon vehicle driving, and in particular the effect of the camera lens field of view (FOV). In a field study, driving performance was measured for natural and indirect vision with eight participants negotiating a road course in a military vehicle. The indirect vision system was driven with fixed panoramic flat pa...
متن کاملAutomatic Detection of Region-Mura Defect in TFT-LCD
Visual defects, called mura in the field, sometimes occur during the manufacturing of the flat panel liquid crystal displays. In this paper we propose an automatic inspection method that reliably detects and quantifies TFT-LCD regionmura defects. The method consists of two phases. In the first phase we segment candidate region-muras from TFT-LCD panel images using the modified regression diagno...
متن کاملDefect inspection of patterned thin film transistor-liquid crystal display panels using a fast sub-image-based singular value decomposition
Thin film transistor-liquid crystal displays (TFT-LCDs) have become increasingly attractive and popular as display devices. A machine vision approach is proposed for automatic inspection of microdefects in patterned TFT-LCD surfaces. The proposed method is based on a global image reconstruction scheme using singular value decomposition. A partition procedure that separates the input image into ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1992