在TFT LCD越來越普遍的同時，畫面閃爍的這個問題，已被列為主要不良項目去檢視它。所以愈來愈多的研究單位，針對畫面閃爍這個議題，從事研究改善，以期能降低其影響程度。無論如何，有些研究從液晶上去著手，有些從TFT 內部的alignment layers，也有一些從畫素的架構，或者驅動方式來著手，雖方法不計其數，但至今仍沒有一個有系統的解決方式被建立。
TFT LCD必須依靠其他裝置來供給電壓，以便能夠顯示，為了避免液晶材料因沒有轉換電壓正、負極性而破壞液晶態，所以我們提供了一個可以轉換的電壓給液晶這個cell。為了這個緣故，許多極性的轉換模式因應而生，包括Frame Inversion，Column，Row and Dot Inversion都有被採用。每一種模式也各有其優缺點，Frame Inversion一般會應用於小尺寸，但如果應用在大尺寸就會很容易產生閃爍現象。
在這個研究裡面，我們從探討Flicker現象至提出一些改善方案並實驗得到結果。相信這些解決方法對於減少Flicker的程度，能有更好的顯示品質。

Flicker is a major visual defect in active-matrix liquid crystal display (AMLCD). As the AMLCD becomes more popular, there have been increased research activities on flicker in order to minimize this undesirable effect. However, most of these studies have focused on individual liquid crystal (LC) mixtures or alignment layers. There were also a few studies on novel pixel structures and driving methods. But up to date there has been no systematic approach to identifying the causes of flicker and establishing a complete flicker model for the AMLCD.
The AMLCD depends on active devices to apply voltages to pixels during address time and the ability of pixels to conserve the voltage for the rest of the frame time .To avoid chemical degradation of the LC material, an alternating voltage waveform has to be applied to the LC cell. For this purpose, several modes of polarity inversion including frame, column, row and dot inversion are adopted. Each mode has advantages and disadvantages. Frame inversion commonly used in silicon light valves for the purpose of minimizing the lateral electric field in small pixels. The lateral electric field can result in an undesired reverse tilt domain in each pixel and lead to poor contrast of the display. While frame inversion is good for minimizing the lateral field effect, it also produces a higher degree of flicker than other modes of polarity inversion.
In this work, we performed systematic characterizations of flicker in silicon light valves. Four experiments were designed to probe the conduction mechanisms within silicon light valves for causes of flicker. Through systematic characterizations of flicker in various silicon light valves, a flicker model was established. Solutions for minimizing this visual defect were obtained to improve the silicon AMLCD quality.

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