TFT-LCDの画素欠陥リペアと視認性検討 : 情報ディスプレイ

抄録

The repair of pixel defects on TFT-LCD, which is executed with laser processing or redundancy structure. is very effective for the high productivity. This paper describes the survey of the pixel defect repair. The pixel defect repair may bring the asymmetry of the pixel voltage, which is caused by the pixel voltage shift when the TFTS are turned off. The asymmetry causes the difference of the display characteristics. The pixel defect visibility was evaluated considering the dependence of the contrast threshold on the background luminance. Consequently, the relation between the asymmetry and the pixel defect visibility has been acquired. This can be applied to the use of degraded redundancy structure.