Linear energy control of laser drilling and its application in the repair of TFT-LCD bright pixels

Taco Chen, Ming Tzer Lin, Kuan Jung Chung

研究成果: Article

1 引文 斯高帕斯(Scopus)

摘要

Laser drilling is an energy dependent process in which energy consumption is linearly proportional to the thickness of the material being drilled. Thus, providing linear output power from the laser can provide considerable advantages in the repair of devices such as TFT-LCD pixels. Unfortunately, the non-linear energy characteristics of lasers require compensation to achieve linear power output. Conventional compensation schemes use laser power meters that require repeatedly switching the laser system off and on again. This study developed a softwarebased energy compensation method to provide optimized energy output and continuous linear laser energy. This software solution enables the measurement of laser energy in a fixed period and its manipulation using a compensation table, which eliminates the need for a laser power meter and enables the system to remain in operation during laser power calibration. The proposed method provides linear output in which the linear energy proportion (R2) reaches 0.9988 and provides a very stable power source. We applied this method to repair bright pixels in LCD panels, achieving a success rate of 86 %. In addition, the proposed method eliminates the need to remove the LCD casing from the fabrication module, thereby increasing the efficiency of production.

原文English
頁(從 - 到)1909-1915
頁數7
期刊Microsystem Technologies
18
發行號11
DOIs
出版狀態Published - 2012 十一月 1

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Hardware and Architecture
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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