Development of a drop-on-demand droplet generator for one-drop-fill technology

被引：81

作者：

Fan, Kuang-Chao ^{[1
]}

Chen, Jhih-Yuan ^{[1
]}

Wang, Ching-Hua ^{[1
]}

Pan, Wen-Chueh ^{[2
]}

机构：

[1] Natl Taiwan Univ, Dept Mech Engn, Taipei 10764, Taiwan

[2] Chung Shan Inst Sci & Technol, Lungtan, Taoyuan, Taiwan

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2008年 / 147卷 / 02期

关键词：

droplet generator; one-drop-fill; drop-on-demand; liquid crystal;

D O I：

10.1016/j.sna.2008.03.006

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents the design, fabrication and tests of a piezoelectric-type droplet generator, which can be used for on-line liquid dispensing system. The principle is to actuate a disk-type PZT by a function generator to push the liquid out of the droplet generator and form a near-spherical droplet due to surface tension. A light-emitting diode (LED) is simultaneously triggered using the stroboscopic technique. In situ recording of the droplet formation is achieved by a CCD camera to measure the droplet dimension by image processing methods. The influence of the process parameters on the droplet quality is also studied. For different liquids the drive conditions shall be adjusted in order to obtain the optimum droplet formation. An application to the one-drop-fill (ODF) technology of liquid crystal displays (LCD) was carried out in order to control the droplet sizes and the repeatability of the quantity. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：649 / 655

页数：7

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