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On the Development of a Spatial Hybrid Visual Alignment System  

Hwang, Jae-Woong (Samsung Electronics)
Kwon, Sang-Joo (School of Aerospace and Mechanical Eng., Korea Aerospace University)
Publication Information
Journal of the Semiconductor & Display Technology / v.10, no.4, 2011 , pp. 79-87 More about this Journal
Abstract
In this paper, suggested is a hybrid-type visual alignment system to align mask and panel in 3-D space, where mask and panel are to be controlled independently by two individual positioning mechanisms in order to compensate for spatial misalignments. In the hybrid visual alignment system, the below 4-PPR parallel mechanism provides in-plain motions to pattern mask like the other conventional alignment systems while the above 4-RPS parallel mechanism is to move glass panel to achieve a complete spatial alignment. For the control of the hybrid alignment system, first, inverse kinematic solutions for the parallel mechanisms are given to determine the driving distance of each active joint, and also an efficient way to determine the spatial alignment error is developed by exploiting three in-plane cameras.
Keywords
Flat panel display; Visual alignment; Parallel mechanism; Inverse kinematics;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
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