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Electrical measuring highlights detection mechanism of the LCD screen into a box

Author: ChenCheng
Tutor: QuXinPing；XiangChuanYi
School: Fudan University
Course: IC Engineering
Keywords: TFT-LCD Highlights Electrical Measurement Signal
CLC: TN873.93
Type: Master's thesis
Year: 2011
Downloads: 14
Quote: 0
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Abstract


Into a box the electrical measuring is an important part of the entire process of TFT-LCD . As LCD screen into a box after the first power detection , you can guarantee that defective products before screening time during the follow-up process , waste of follow-up supplies to avoid defective products . In this paper, research into the box electrical measuring signal drive mode to establish the structural model of the Switch , and into a box the the Electrical Measurement module electrical voltage measurement size difference analysis , put forward the electrical measurement signal into a box to improve the program : to reduce the Common voltage , and validated . After focusing for Cell into the box after the main undetected - the highlight of failure mode analysis, derived its possible undetected reasons put forward two improvement program : discharge screen detection program and Gate signal modifications by the actual verification , sure that the effect of improvement of the program and its improvement . Actual confirmation of the production line , reducing the effect of the Common Voltage Gate signal modifications , the former can raise all the poor detection rate of about 0.2 % , while the latter can improve the highlights of the detection rate of 0.15% , is expected to bring an annual income of 750,000 yuan .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Terminal equipment > Display device,the display > LCD monitors
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